Pi-powered Mansfield Holiday Zoom Movie Camera

When John Sichi discovered a Mansfield Holiday Zoom movie camera on Yerdle, he was instantly transported back to a childhood of making home movies with his family.

The camera was fully operational, but sadly the lens was damaged. 

With the cost of parts, film, and development an unreasonable expense, John decided to digitise the camera using a Raspberry Pi Zero and Pi camera module.

Pi-powered Mansfield Holiday Zoom Movie Camera

To fit the Pi in place, John was forced to pull out the inner workings; unfortunately this meant he had to lose the nostalgic whirring noise of the inner springs which would originally have spun as the movie was recorded.

Using a scrap piece of metal, he was able to create a stop/start button from the existing trigger: hold it down to record, and release to stop.

A USB battery pack provides power to the Pi while bits of LEGO and Sugru hold it in place. 

Pi-powered Mansfield Holiday Zoom Movie Camera

John decided to mount the camera module externally, as he did not want to risk damaging the body of the Mansfield. A further upgrade would aim to use a camera with functional lens, thereby fully incorporating the new tech with the old functionality. 

Code for the camera is available via GitHub while sample footage from the camera can be found below. As you can see, the build works beautifully, and that retro image quality is incredibly evocative. Great work, John! 

Holiday Pi retrocamera

Uploaded by jsichi on 2016-09-14.

 

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Pi Cart: RetroPie in a NES Cartridge

RetroPie builds take up approximately 40% of my daily project searching. Whether it’s across social media, within the depths of YouTube, littering my inbox, or shared across office messaging, I see RetroPie everywhere.

I see… RetroPie

I can look across my desk right this moment and spot two different USB controllers and two RetroPie-imaged SD cards from where I sit. True story.

The mess of Alex's desk

The ‘organised’ clutter-mess of my desk…

Because of this, my attention tends to be drawn away from the inner workings of a gaming build and more toward the aesthetics. After all, if I’ve managed to set up RetroPie, anyone can do it.

When it comes to RetroPie builds, it tends to be the physical casing that really catches my attention. So many makers go the extra mile to build stunning gaming units that really please the eye.

Taking that into consideration, can you really be surprised that I’m writing about the Pi Cart? I mean, c’mon: it’s awesome-looking!

Pi Cart: a Raspberry Pi Retro Gaming Rig in an NES Cartridge

I put a Raspberry Pi Zero (and 2,400 vintage games) into an NES cartridge and it’s awesome. Powered by RetroPie. I also wrote a step-by-step guide on howchoo and a list of all the materials you’ll need to build your own: https://howchoo.com/g/mti0oge5nzk/pi-cart-a-raspberry-pi-retro-gaming-rig-in-an-nes-cartridge

Pi Cart originator Zach offers up a complete how-to for the project, giving all budding gamers and tinkerers the instructions they need to fit a RetroPie-enabled Raspberry Pi Zero into an old NES cartridge.

Using a Raspberry Pi Zero, a four-port USB mini hub (to allow for the use of more than one USB controller), an old NES cartridge, and all the usual gubbins, it’s fairly easy to create your own Pi Cart at minimal cost. 

RetroPie Pi Cart

There are many online guides and videos which give you all the information you need to install RetroPie on the Raspberry Pi, so if you’ve never tried it before and feel a little bit out of your depth, I can assure you that you’ll be fine.

Then all you need is a glue gun (this is possibly the most expensive component of the build!) and an hour or so to go from Zero to retro-gaming Hero!

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Circadia Sunrise Lamp Alarm

Florian loves sleeping and, like many of us, he doesn’t enjoy waking up. Alarm clocks irritate him, and radio alarms can be a musical disappointment, depending on the station.

For many, the lack of sunlight during winter months makes waking up even more of a struggle, with no bright glare through the curtains helping to prise our eyelids apart.

Iiiii… don’t knooooow-aaaaa… what the words reaaaaally aaaaaare…

Picking up on the concept of sunrise alarm clocks, and wanting to incorporate music into the idea, Florian decided to build the Circadia Sunrise Lamp. 

Circadia – sunrise medley

Circadia – sunrise lamp project https://sites.google.com/site/fpgaandco/sunrise Theme summary

Standing just under two metres tall, the lamp consists of three parts: the top section, housing a 3D-printed omnidirectional speaker system and orbiting text display; the midsection, home to 288 independently controlled RGB NeoPixel LEDs; and the bottom section, snugly fitting a midwoofer, Raspberry Pi, audio amp, and power supplies.

SUNRISE LAMP

Florian spent two years, on and off, working on the lamp and it’s fair to say that once he started getting to grips with the Python code, and was able to see the visual results, he became hooked on adding more and more themes. From Manila Sunrise to Sumatra Rain, each theme boasts its own colour cycle and soundtrack, all lasting approximately 40 minutes from start to refreshingly wonderful complete awakening. Florian writes:

[The lamp] makes it quite a bit easier for me to get out of bed every morning (with a silly grin on my face). It’s really surprisingly effective and hard to describe. Rather than being resentful that it is already time to get up, I am now more inclined to be eager to get going. If someone had told me how well this actually works I would have put a sunrise lamp in my bedroom years ago. 

But he didn’t stop there.

As the lamp’s main purpose is to wake Florian up in the morning, it was inevitably spending the majority of the day idle. To tackle this, Florian incorporated a music-reactive light show, plus an interactive version of Tetris because, to quote from makers the world over, “Why not?”

Circadia – Tetris

Circadia – sunrise lamp project https://sites.google.com/site/fpgaandco/sunrise

Florian, in all his brilliant maker glory, has provided an in-depth blog of the Circadia Sunrise Lamp, documenting the processes, the successes, and failures of the build, as well as his continued development of new themes.

We’ve seen a few different sunrise lamps, alarm clocks, and light shows over the years, all using a Raspberry Pi. But this one, combining elegant physical style with well-coded functionality, is certainly one of our favourites.

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Raspberry Pi Air Drum Kit

While perusing a local car boot sale, David Pride came across a Silverlit Air Drum Kit for the grand total of one whole shiny pound. And just like any digital maker, he bought it, realising the potential of this wondrous discovery.

David Pride Air Drum Kit

The original Silverlit Air Drum Kit

David had been recently fiddling with the Python CWiid library, a resource that allows you to use Wii controllers (Wiimotes) with a Raspberry Pi via Bluetooth. However, it was the setup of two controllers to a single Pi that was causing issues:

I’d only ever managed to get one controller working with a single Pi before, so the first challenge was to get a pair of controllers working as the ‘sticks’. That took a lot of mucking about, until I found the excellent post by WiiGate that detailed how to set up two controllers properly, using the MAC addresses. You can find it here.

Once this hurdle had been overcome, David collected a variety of open-source drum sample .wav files from the abundance of sound clips available on the web.

Did you honestly believe we’d get through this entire blog without a single cowbell reference?

David used Tkinter, writing a small app that would allow him to understand the positioning of the controllers, and as a result the data produced. Due to the nature of the controllers, movement wasn’t the only factor to consider. Speed and the way in which the controller was moved were also important. Move the controller quickly, and a different set of data is produced from that generated by a slower motion.

However, David isn’t one to give up and after a (relatively long) while, he had managed to plot positions for four distinct drum sounds:

I initially wanted to get three sounds on each controller, but the movement scale was a bit too tight to do it successfully every time, and two sounds often overlapped. So, I’m using the trigger button on each controller, combined with the movement for one of the sounds. This gives six different drum sounds, three per controller, that can be played without the sounds overlapping.

The final result of David’s tinkering is this wonderful air drum kit that provides a clean, impressive response with every movement. And because he’s such a lovely chap, all the code you need can be found at his GitHub page.

Raspberry Pi Air Drum Kit

Easy Python project using 2 Wii controllers and a Raspberry Pi to create an ‘air drum’ kit

So David, all we need now is the air guitar, air bass and air keyboard, and we’ve got the start of this year’s Christmas Number One.

Band name suggestions welcome…

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talkiepi: A Raspberry Pi Walkie-Talkie

talkiepi walkietalkie

talkiepi is a single-button, push-to-talk walkie-talkie build that allows users to talk with their friends easily over WiFi, without the confusion of frequency dials, random buttons, and all the other clicky, turny, pushy options that caused me to break my own walkie-talkies as a child.

Talkiepi

It’s the brainchild of Daniel Chote, native New Zealander, self-proclaimed Code Monkey and all-round Wonder Dad, currently residing in the USA.

Whereas many parents would simply hop on the internet and purchase their kids a set of walkie-talkies, Daniel decided to make his own.

SPOILERS, SWEETIE. Though not without good reason… for many reported that his son was stuck within a parallel universe… of sorts, literally trapped within their mutual space… kinda… ish. It’s like a tightrope walker but upside down? I think that’s what they said. And… hmmm… oh yeah, he’s only able to communicate via fairy lights and walkie-talkie technology and… eeeerr… I think I need to watch that show again. SPOILERS, SWEETIE.

The talkiepi can be built with or without an enclosure. Though Daniel uses a 3D printer to complete the build, you could use the components as they are, though they wouldn’t look half as good and would be a pain to make portable. But forgoing the case at the start will help you get a better idea of how everything works… so get a little naked to begin with.

Once you’re ready to put everything together, Daniel has provided the files needed for the print. Or, for added awesome, you could utilise any tin or Eggo box you have lying around. 

I’ll have Eleven Eggos, please…

Daniel cannibalised a USB speakerphone for sound and voice, installed a Raspberry Pi 3 in the casing and used a handful of components he already had, including a GPIO header connector, nuts and bolts, and LEDs. A push button with built-in LED acts as the means of activating the talk function of the talkiepi. 

talkiepi

The software for the device runs primarily on Mumble. Mumble allowed Daniel to create groups for the talkiepi, meaning that only those within the group could communicate. And with the added benefit of the Mumble app, those without the talkiepi can still join in with the fun via a smartphone or computer. All you need can be found at Daniel’s GitHub page.

We really like the fun factor of this build. It’s clean, simple and easy to use. On a larger scale, the system could work within more ‘grown up’, professional locations to allow for an easy method of communication. But for now, we’re working out how quickly we can build a set and start make-pretending Stranger Things in the Pi Towers office.

… did anyone else just see the wallpaper ripple?

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The Social Interaction Dress

I came across Clodagh O’Mahony on Instagram, right at the start of my Raspberry Pi employment. As I was starting my new adventure with Pi, so was she… albeit via a somewhat different approach.

ClodaghOMahonyDress

@yodaomahony *sigh* There goes all my (parents’) money. #goodcause tho. #adafruit #thesiscountdown #day82

@raspberrypifoundation What are you planning to make @yodaomahony?

@yodaomahony @raspberrypifoundation I’m building a dress that quantifies real-world social interactions and posts them online. My thesis is a commentary on how much social media affects our actions.

It’s fair to say that our initial interaction had me hooked on the idea of wearable tech that quantified social interactions. So from that moment, I followed her account, checking in on her posts, and then counted down the days until her thesis was due, mainly so I could finally share the build with all of you.

Eventually the Instagram countdown ran its course and last week, as Clodagh announced the end of her project, this long-awaited blog post could finally come to life. And for Clodagh, it meant she had one for us in return

“Since it’s now all over and done with, I’m going to skip the Phase/Part structure and just do a summary write-up of the thesis build. To be honest, I would probably just let it slide and go back to the pre-thesis days of whinging about my hair and Project Runway, but I feel like I owe the Raspberry Pi Foundation something for following me almost all the way through the Instagram countdown.”

(See? Regardless of what people say, my adorable social bullying helps productivity!)

For her thesis, Clodagh built two components of the study: the dress and its accompanying website.

The dress itself houses a Raspberry Pi, fibre optics, an Adafruit 12-Key Capacitive Touch Sensor Breakout and Pimironi Blinkt within a beautiful 3D-printed casing.

Interactive Dress

With the dress split into sectors, lights glow as a body part is touched, thanks to conductive thread… lots of conductive thread. A hand to the waist sets the dress glowing purple, to the hip, green, and so on. 

As the touch sets the lights in action, the dress also registers the interaction via a point system, relaying the data back to the website.

Interactive Dress Website

It’s fair to note now that the dress and website are all part of a thesis study into the way in which we have handed ourselves over to social media, and the idea of celebrities ‘selling themselves’ online, opening their lives to public scrutiny for the good of their career progression. 

Alongside touch, the dress also sets out to award points based on voice. Positive words boast positive colouring across the Blinkt, while negative words do the opposite. Though the device doesn’t record specific speech, it acknowledges words based on a catalogue and awards points accordingly. Points are also granted for profile page views and location, along with multipliers based on how public you make your profile. 

Clodagh OMahony Dress

It genuinely is wonderful to see the dress come to life. Changes along the way were well-documented – at one point, an entirely new dress was created to better fit the purpose – and with the piece now complete, Clodagh can go back to bingeflixing Project Runway and blogging, while I hunt down my next Instagram victim prey target maker.

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World’s smallest working MAME cabinet

We are confident that nobody out there has built a working MAME cabinet that’s any smaller than this. Adafruit’s Phillip Burgess posted this project on Twitter last week, and you guys went absolutely nuts for it. So he’s produced a video, and a quick and dirty explainer so you can make your own.

Miniature MAME cabinet

Your eyes aren’t deceiving you: that backplate is a Pi Zero. You’re going to need tiny elf fingers for this one.

Really: it’s teeny. That OLED screen is only 0.96″.

Phillip’s at pains to point out that their walkthrough is not a complete, step-by-step tutorial of the sort that Adafruit usually provide:

It’s lessons learned during an impromptu weekend hacking session which, to be honest, was a lot of trouble to build and only marginally fun to play, aside from the incredible “gee whiz that’s tiny!” factor. But it may provide insights for others looking to build small gadgets…

You may not enjoy playing it, Phillip, but I’m sure any mice haunting the Adafruit factory will be having a field day.

World’s Smallest MAME Arcade Cabinet @adafruit #adafruit @raspberry_pi

Tempest in a Teacup https://learn.adafruit.com/worlds-smallest-mame-arcade-cabinet —————————————– Visit the Adafruit shop online – http://www.adafruit.com Subscribe to Adafruit on YouTube: http://adafru.it/subscribe Join our weekly Show & Tell on G+ Hangouts On Air: http://adafru.it/showtell Watch our latest project videos: http://adafru.it/latest New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ Music by bartlebeats: http://soundcloud.com/bartlebeats —————————————–

You can find a writeup for what has to be the coolest MAME cabinet build I’ve seen this year at Adafruit. Thanks gang!

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Face-tracking fan

Today’s downpour notwithstanding, the UK has just experienced its hottest September day since 1911. Here at Pi Towers, we were acutely aware of this. The office roared with the noise from sixty-odd CPU fans at full tilt. The air conditioning conked out. And things got especially bad when we realised that it was buy-one-get-one-free day at the local noodle place, which meant we were also trying to justify the eating of hot food in an office that was feeling a lot like one of those spa steam rooms, but stinkier.

nerd-sweat

Artist’s rendering of the general situation at Pi Towers for much of this week

Sensible people would have engineered their way out of this mess, like DevinL9 (please let us know your real name in the comments if you’d like us to use it here). DevinL9 is the possessor of an internet statistic: he reckons that a full-sized human can produce between two and four litres of sweat in an hour.

This is disgusting, so DevinL9 has come up with a nice little OpenCV hack to evaporate as much of it as possible. This is a “use what you have” hack: it’s not beautiful, but it’s effective, and if your desk is anything like mine you’ve probably got almost everything you need for the build in a drawer. Meet the fan that recognises your face, and swivels to track it.

f0vlf4ciscbemgc-large

Meet FanBot. Devin L9 says:

Welcome FanBot, the personal desktop fan that follows your face and keeps you cool when things are getting a little too spicy!

This is more of a proof of concept than a finished beautified product. It is for a intermediate developer. However, I wouldn’t write yourself off if you’re a beginner, it’ll just be a little more difficult. That being said, this project will get you a working version of openCV 3.0.0 on the Raspberry Pi 2 (RPi). [Liz notes: or any other model of Raspberry Pi! ] It will teach you a little about pulse width modulation (PWM) and how to control a servo with the general purpose input/output (GPIO) pins on the RPi. Let me know if you have problems. I’ll do my best to fix anything. It should be noted that this is not going to be a completely optimized solution in code or execution. The purpose of this project is to get a simple working version of openCV, play around with it by means of face detection, and move a servo so that a small fan can cool you off!

It works, too. There’s a complete build diary and full parts list and instructions, including all the code you’ll need, over at Instructables.

No soldering’s required: just breadboard and superglue for mounting. What are you waiting for?

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Beyond the bookcase

This column is from The MagPi issue 49. You can download a PDF of the full issue for free or subscribe to receive the print edition in your mailbox or the digital edition on your tablet. All proceeds from the print and digital editions help the Raspberry Pi Foundation achieve its charitable goals.

Seattle Central Library (photo by Bobak Ha'Eri)

Seattle Central Library (photo by Bobak Ha’Eri)

Before I became a part of the maker movement, my impression of a library was mostly formed by my childhood experiences there. Both my school and local public library were places for books, magazines, newspapers, and research. In short, it was a place for quiet reading. Libraries today look and sound a lot different than I remember. Many now include makerspaces, tools for connected learning, and spaces for community gathering.

But if you take a closer look at what these institutions set out to accomplish in the first place, then the reason they’ve transformed becomes clear. Take, for instance, the mission of the Seattle Public Library, which is to “[bring] people, information, and ideas together to enrich lives and build community.” The mission of the library isn’t directly related to reading, even though reading can be a big part of achieving that mission.

A few years ago, I had the opportunity to visit the central branch of the Seattle Public Library. The fifth floor is called ‘The Mixing Chamber’ and is a designated location where people, information, and ideas can come together. Of course, there’s plenty of material to read at the main branch of the Seattle Public Library, but this building in particular makes it very clear that they’re about more than just reading.

As another indication of this, we see a lot of interest in Raspberry Pi from librarians. A group of us recently visited the annual conference of the American Library Association in Orlando, and the reaction to our presence there was incredibly positive. Not only have many librarians heard of Raspberry Pi, but they also use it in so many ways.

Of course, library makerspaces use Raspberry Pi just like any other makerspace would: as a platform for DIY projects. There are even many libraries that create Raspberry Pi checkout kits so that their patrons can experiment with Raspberry Pi in their own time, either in the library or at home.

And just as Raspberry Pi is used in the classroom to learn about computing, it’s also being used in the library for the very same reason. We’ve had many librarians come to our Picademy educator professional development programme to learn about teaching people with digital making and computing. These librarians have gone on to share their knowledge and our learning resources with their patrons. Librarians especially love that our content, including The MagPi, is available online entirely for free, and is Creative Commons licensed.

Multitasking

What I particularly like about the librarians I’ve encountered is that they don’t just put Raspberry Pi in the hands of their patrons, but they use our computers as a tool for their own work. For instance, I recently met Richard Loomis from the Somerset County Library System in New Jersey. He uses Raspberry Pis for networked digital signage across a few different branches. And John Jakobsen from the Palos Verdes Library District recently shared how he set up Raspberry Pis as terminals for their public access catalogue, replacing old and expensive computers. So librarians don’t just talk the talk: they also walk the walk.

I’m optimistic that libraries will continue to thrive as technology changes. At the Raspberry Pi Foundation, we’re delighted to see that libraries all over the world use our computers for digital making, education, and utility. Our organisation’s connection with libraries will always be rich and meaningful, not only because of the way they use Raspberry Pi, but because we have something critical in common with them: we deeply value accessibility and community.

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Picademy Expands in the United States

By all accounts, the pilot expansion of Picademy to the United States has been a huge success. In fact, we’ve already held three workshops and inducted 120 new Raspberry Pi Certified Educators on U.S. soil. So far we’ve had two workshops in Mountain View, CA and one in Baltimore, MD.

28885300572_acb19e2777_o

In December, we’ll wrap up our 2016 program with a workshop at the Texas Advanced Computing Center at the University of Texas in Austin. If you’re an educator and you’d like to join us for two days of mind-blowing professional development, please apply now.

And it gets even better. To build on the success of the pilot program, we are excited to announce that we will expand Picademy in the United States to over 300 educators and additional cities in 2017. In fact, we’re making this announcement as a commitment to President Obama to join the Computer Science For All initiative, a call to action to expand CS education in K-12 classrooms in the United States. And today, the White House hosts a summit to mark progress on the initiative:

The case for giving all students access to CS is straightforward. Nine in ten parents want CS taught at their child’s school and yet, by some estimates, only a quarter of K-12 schools offer a CS course with programming included. However, the need for such skills across industries continues to rapidly grow, with 51 percent of all science, technology, engineering, and math (STEM) jobs projected to be in CS-related field by 2018.

If you’re a professional educator, we want you to join us at a Picademy workshop. We haven’t yet selected the cities for 2017’s program, but please fill out this form to receive an update when we announce new cities and when applications open.

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Raspberry Pi Chiptune Player

I have been staring at a blank screen for whole minutes. There are no words for just how much I love this project. I’ve already been on eBay to find a General Instrument AY-3-8910 series sound chip so I can play with one myself. Before we get into details, feast your ears.

vmw ay-3-8910 ym player

Raspeberry Pi Driving an AY-3-8910 sound chip It’s playing “intro2.ym” by Surgeon (Aleksy Lutsenko) More details on the setup can be found here: http://www.deater.net/weave/vmwprod/hardware/ay-3-8910/

What’s going on here? The Raspberry Pi is playing chiptunes by serving the files directly on to a AY-3-8910 (brought direct to you from the 1980s), while doing some rather jolly LED visualisation too.

The AY-3-8910 is no longer made: it was a piece of kit you’d find in most arcade machines, games consoles and home computers in the 1980s (if you had a ZX Spectrum, an Amstrad CPC or an Apple II, you’ll be familiar with its gorgeously grungy bleeps and bloops). Nowadays there’s dwindling stock that goes to service old machines, or to make entirely new things that’ll play chiptunes – like this beast.

chiptune player

Vince Weaver, the maker, says:

The AY-3-8910 is fairly straightforward. Three channels of square waves plus various noise and envelope effects. Provide a clock (1MHz in our case) and there are 16 (well, 14) on-chip registers you write to. Just put the address then the 8 bit value on the bus, toggle the 3 bus control pins, and you are set. You’ll want to do this fairly fast. A typical YM music file wants you to write all 14 registers every 50Hz.

I use the Pi’s GPIOs to shift an 8 bit value into a shift register. Then I use a few more to drive the control bus.

Visualization is done with some i2c LED displays.

The amplifier is an LM386 design from the AY-3-8910 datasheet.

Vince has plans to make some improvements (adding stereo, printing a PCB, swapping out for a better amplifier, using SPI to drive the shift register instead of GPIO and refining the software), but even in this prototype version, this is a piece of kit I’d love to have on my desk. Fortunately, we can replicate the project: everything you need is on Vince’s website and on GitHub. Thanks Vince!

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Monk Makes Puppet Kit

A few weeks back, we were fortunate enough to be sent the Puppet Kit for Raspberry Pi, from our friend Simon Monk of Monk Makes. The kit shows you how to use your Raspberry Pi to take control of a traditional marionette, including controlling the puppet from your keyboard, recording stop-frame puppet movements, and setting the puppet up so that it waves when it detects movement. 

Given my limited experience of physical computing with a Raspberry Pi, I decided to take on the challenge of completing the kit, and documented my journey through Snapchat.

Monk Makes Puppet Kit

To boldly go…

Right out of the box, the kit feels as if it has been put together with care and thought. All wooden pieces have been laser cut, all components (apart from the Raspberry Pi itself) are provided, and the kit includes a step-by-step guide so foolproof that I felt confident I could complete the project. 

The only issue?

My intense fear of clowns, which was instantly triggered when I opened the box and saw the puppet itself:

Monk Makes Puppet

All the nope.

Despite my coulrophobia, I carried on with the build, because that’s how much you all mean to me, dear readers. I do these things for you.

The guide walked me through the project, with clear instructions supported by photographs and diagrams. It was only when I reached Step 16, “Run the Test Code”, that I realised I couldn’t find a mouse. Fortunately I was able to enlist the aid of Ben Nuttall, who has become my Raspberry Pi hero in cases such as this.

Ben Nuttall is my hero

Ben helped me to set the Pi up on the Pi Towers local network, allowing me to feed Simon’s code to the Pi via my MacBook. If you don’t have access to Ben and his heroic abilities, you could use the recently mentioned PiBakery from the legendary David Ferguson to preset the network details into Raspbian before setting up your Raspberry Pi.

After this, setting up the walking functionality of the puppet, plus the additional sensor, was a breeze. With very little previous experience of using GPIO pins, servos, and nightmare-inducing clown puppets, I was somewhat taken aback by how easy I found the process. In fact, by the end, I had the clown dancing a merry jig and waving to anyone who passed. Cute, right?

Making a Waving Puppet – Snapchat Story

We recently got our hands on the Monk Makes Puppet Kit and decided to have Alex build it.. despite her complete lack of coding knowledge. Seriously… she knows nothing. She’s the Jon Snow of Digital Making.

All in all, the kit was a wonderful experience and an interesting learning curve. Not only did it teach me the value of a well-executed and detailed maker kit, it also taught me the value of a Ben Nuttall, and helped me not to fear all clowns after having watched IT at a teenage slumber party like a fool!

*cries in a corner*

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Desktop Sense HAT emulator

If this post gives you a sense of déjà-vu it’s because, last month, we announced a web-based Sense HAT emulator in partnership with US-based startup Trinket.

Today, we’re announcing another Sense HAT emulator designed to run natively on your Raspberry Pi desktop, instead of inside a browser. Developed by Dave Jones, it’s intended for people who own a Raspberry Pi but not a Sense HAT. In the picture below, the sliders are used to change the values reported by the sensors while your code is running.

sense-emu

So, why do we need two versions?

  • For offline use, possibly the most common way Raspberry Pis are used in the classroom.
  • To accommodate the oldest 256 MB models of Raspberry Pi which cannot run the web version.
  • To allow you to integrate your Sense HAT program with any available Python modules, or other Raspberry Pi features such as the Camera Module.

The emulator will come pre-installed in the next Raspbian release but, for now, you can just install it by typing the commands below into a terminal window:

sudo apt-get update
sudo apt-get install python-sense-emu python3-sense-emu python-sense-emu-doc sense-emu-tools -y

You can then access it from the Desktop menu, under Programming.

The emulator closely simulates the Sense HAT hardware being attached to your Pi. You can read from the sensors or write to the LED matrix using multiple Python processes, for example.

sense-idle

Write your code in IDLE as before; there are also a number of examples that can be opened from the emulator’s built-in menu. If you then want to port your code to a physical Sense HAT, you just need to change

sense_emu

to

sense_hat

at the top of your program. Reverse this if you’re porting a physical Sense HAT program to the emulator, perhaps from one of our educational resources; this step isn’t required in the web version of the emulator.

sense-emu-prefs

There are a number of preferences that you can adjust to change the behaviour of the emulator, most notably sensor simulation, otherwise known as jitter. This costs some CPU time, and is disabled by default on the low-end Raspberry Pis, but it provides a realistic experience of how the hardware sensors would behave. You’ll see that the values being returned in your code drift according to the known error tolerances of the physical sensors used on the Sense HAT.

This emulator will allow more Raspberry Pi users to participate in future Astro Pi competitions without having to buy a Sense HAT: ideal for the classroom where 15 Sense HATs may be beyond the budget.

So, where do you start? If you’re new to the Sense HAT, you can just copy and paste many of the code examples from our educational resources, like this one. You can also check out our e-book Sense HAT Essentials. For a complete list of all the functions you can use, have a look at the Sense HAT API reference here.

You can even install this emulator on other types of Linux desktop, such as Ubuntu! For more information on how to do this, please visit the emulator documentation pages here.

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Ten millionth Raspberry Pi, and a new kit

When we started Raspberry Pi, we had a simple goal: to increase the number of people applying to study Computer Science at Cambridge. By putting cheap, programmable computers in the hands of the right young people, we hoped that we might revive some of the sense of excitement about computing that we had back in the 1980s with our Sinclair Spectrums, BBC Micros and Commodore 64s.

At the time, we thought our lifetime volumes might amount to ten thousand units – if we were lucky. There was was no expectation that adults would use Raspberry Pi, no expectation of commercial success, and certainly no expectation that four years later we would be manufacturing tens of thousands of units a day in the UK, and exporting Raspberry Pi all over the world.

Less than ten million Raspberry Pis

The first two thousand Raspberry Pis. Each Pi in this pallet now has 5000 siblings.

With this in mind, you can imagine how strange it feels to be able to announce that over the last four and a half years we’ve sold a grand total of ten million Raspberry Pis. Thanks to you, we’ve beaten our wildest dreams by three orders of magnitude, and we’re only just getting started. Every time you buy a Raspberry Pi, you help fund both our ongoing engineering work, and our educational outreach programs, including Code Club and Picademy.

Very early on, we decided that we would offer the bare-bones Raspberry Pi board without accessories: that way, cost-conscious customers get the lowest possible price, provided they can beg or borrow USB peripherals, a power supply and an SD card. Over the years, Raspberry Pi distributors have built on this, producing some fantastic bundles for people who would rather get everything they need from a single source.

To celebrate the ten millionth Raspberry Pi, for the first time we’ve put together our own idea of what the perfect bundle would look like, creating the official Raspberry Pi Starter Kit.

The starter kit, unboxed and ready to go

The starter kit, unboxed and ready to go

Inside the minimalist white box (like the official case, another beautiful Kinneir Dufort design), you’ll find:

  • A Raspberry Pi 3 Model B
  • An 8GB NOOBS SD card
  • An official case
  • An official 2.5A multi-region power supply
  • An official 1m HDMI cable
  • An optical mouse and a keyboard with high-quality scissor-switch action
  • A copy of Adventures in Raspberry Pi Foundation Edition

This is an unashamedly premium product: the latest Raspberry Pi, official accessories, the best USB peripherals we could find, and a copy of the highest-rated Raspberry Pi book. The kit is available to order online in the UK from our partners element14 and RS Components, priced at £99+VAT, and will be coming to the rest of the world, and to your favourite reseller, over the next few weeks.

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Hallo Deutschland! The MagPi magazine has arrived in Germany

It gives me great pleasure to announce that The MagPi, the official Raspberry Pi magazine, is now available – fully translated and localised – in Germany, thanks to a collaboration with our friends at CHIP.

The cover of the first issue of the German version of the MagPi magazine, "das offizielle Raspberry Pi Magazin"

Germany was one of the first places outside the UK to take an interest in Raspberry Pi, so it’s quite fitting that it’s our first license. Eben Upton tells us more:

Germany is our third largest market so it seems natural that, after only 18 months, Germany should be the first country to get a localised version of The MagPi.

On a personal note, it’s particularly satisfying for me to see the MagPi launch in Germany, because as a child I used to import German Commodore Amiga magazines, which had so much more technical detail than their UK equivalents. The style of the MagPi is very reminiscent of these magazines: I hope that we’re in some sense “returning the favour,” and that German children of all ages (from 8-80) will be inspired to create exciting projects with Raspberry Pi and share them with the world.

The first issue is out right now everywhere you’d expect a cutting-edge technology magazine to be, not to mention available direct from CHIP’s online store.

Like the UK magazine, das offizielle Raspberry Pi Magazin features 100 pages of glossy Raspberry Pi goodness, but unlike its UK language counterpart it’s currently scheduled to run bi-monthly, so the next issue will be arriving on 2 November.

The magazine is available now for €9.95 in print or €6.50 on digital devices, and you can pick up a subscription for €54.80. Subscribers will also receive the same amazing free gift – a Raspberry Pi Zero and full cable bundle (including the camera ribbon cable). The free PDF edition will follow in 90 days.

A two-page spread from the magazine featuring photographs and text: "LEBENDIGE LEGOSTADT"

A two-page spread from the magazine, featuring text and code snippets: "PROGRAMMIEREN IN C: ERSTE SCHRITTE"

A two-page spread from the magazine, featuring photos and text: "WILDLIFE-KAMERA"

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PiBakery – foolproof custom Raspbian setup

Everybody loves cake, right? Cakes have layers. Mmm…. cake! We’re sure you’re also love PiBakery, a brand new way to bake Raspberry Pi images, which makes creating a custom image a…piece of cake.

blocks-on-workspace

PiBakery was created by David Ferguson. He’s a talented 17-year-old whom we first met at the Big Birthday event we held to celebrate four years of Pi back in February. He showed Liz and Eben a work-in-progress version of PiBakery, and they’ve been raving about it ever since.

This crafty program enables users to mix together a customised version of Raspbian with additional ingredients – and you need absolutely no experience with computers to set up your custom image.

In PiBakery, you drag-and-drop blocks (just like Scratch) to add extra components. PiBakery then mixes the latest version of Raspbian with its additional sprinkles, and flashes the result directly to an SD Card.

PiBakery_script

“The idea for PiBakery came about when I went to a Raspberry Pi event,” says David. “I needed to connect my Pi to the network there, but didn’t have a monitor, keyboard and mouse. I needed a way of adding a network to my Raspberry Pi that didn’t require booting it up and manually connecting.”

“PiBakery solves this issue,” he explains. “You can simply drag across the blocks that you want to use with your Raspberry Pi, and the SD Card will be created for you.”

“If you’ve already made an SD card using PiBakery, you can insert that SD card back into your computer, and keep editing the blocks to add additional software, configure new wireless networks, and alter different settings,” says David. “All without having to find a monitor, keyboard and mouse.”

PiBakery is available for Mac and Windows, with a Linux version on the way. It can be downloaded directly from its website. As well as the scripts and block interface, it contains the whole Raspbian installation, So the initial download takes quite a while. But does make the process of building, and flashing SD Cards, remarkably simple.

PiBakery_success

David has written a guide to creating customised SD cards with PiBakery. It’s a very easy program to use, and we followed his guide to quickly build a custom version of Raspbian that connected straight to our local wireless network. Guess what: it worked first time.

Behind the scenes, PiBakery creates a set of scripts that run when the Raspberry Pi is powered on (either just the first time, or every time it is powered). These scripts can be used to set up and connect to a WiFi network, and activate SSH.

Other options include installing Apache, changing the user password, and running Python or command line scripts.

The user controls which scripts are used with the block-based interface. You drag-and-drop the tasks you want the Raspberry Pi to perform when it is powered up. Piece of cake.

We love PiBakery, and cake. Did we mention cake?

 

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Now with added cucumbers

Working here at Pi Towers, I’m always a little frustrated by not being able to share the huge number of commercial businesses’ embedded projects that use Raspberry Pis. (About a third of the Pis we sell go to businesses.) We don’t get to feature many of them on the blog; many organisations don’t want their work replicated by competitors, or aren’t prepared for customers and competitors to see how inexpensively they’re able to automate tasks. Every now and then, though, a company is happy to share what they’re using Pis for.

cucumber-farmer-3

Makoto Koike, centre, with his parents on the family cucumber farm

Here’s a great example: a cucumber farm in Japan, which is using a Raspberry Pi to sort thorny cucumbers, saving the farmer eight to nine hours’ manual work a day.

Makoto Koike is the son of farmers, who works as an embedded systems designer for the Japanese car industry. He started helping out at his parents’ cucumber farm (which he will be taking over when they retire), and spotted a process that was ripe for automation.

cucumber-farmer-7

Cucumbers from the Makotos’ farm

At the Makotos’ farm, cucumbers are graded into nine categories: the straightest, thickest, freshest, most vivid cucumbers (which must have plenty of characteristic spurs) are the best, and can be sold at the highest price. Makoto-san’s mother was in charge of sorting the cucumbers every day, which took eight hours at the peak of the harvest. Makoto-san had an epiphany after reading about Google’s AlphaGo beating the world number one professional Go player. He realised that machine learning and deep learning meant the sorting process could be automated, so he built a process using Google’s open-source machine learning library, TensorFlow, and some machinery to process the cucumbers into graded batches.

cucumber-farmer-10

Sorting in action

cucumber-farmer-6

Camera interface

Google have put together a diagram showing how the system works:

cucumber-farmer-14

There are difficulties in building this sort of system, not least the 7000 cucumbers, pre-graded by his mother, that Makoto-san had to photograph and label over a period of three months to give the model material to train with. He says:

“When I did a validation with the test images, the recognition accuracy exceeded 95%. But if you apply the system with real use cases, the accuracy drops down to about 70%. I suspect the neural network model has the issue of “overfitting” (the phenomenon in neural networks where the model is trained to fit only the small training dataset) because of the insufficient number of training images.”

Still, it’s an impressive feat, and a real-world >95% accuracy rate is not unfeasible with a big enough data set. We’d be interested to see how the setup progresses, especially as more automation is added; right now, cucumbers are added to the processing hopper by hand, and a human has to interact with the touchscreen grading panel. Here’s the system at work:

TensorFlow powered cucumber sorter by Makoto Koike

Uploaded by Kazunori Sato on 2016-08-05.

We’re hoping to see some updates from the Makoto family as the system evolves. And in the meantime, if you have an embedded project you’d like to share with us, let us know in the comments!

 

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Identifying The Hallway Whistler

Becky Stern suffers from that same condition that many of us apartment dwellers are affected by: a curiosity about who is making noise outside the door.

Living within a large New York City apartment, Becky wanted to be able to see out of her peep hole without having to leave her desk. After all, the constant comings and goings of any shared property, though expected, can often be distracting.

(And seriously, whoever keeps slamming their door in my apartment block at 4am WILL suffer my wrath!)

So she decided to use a motion detector to trigger a Pi camera at her door. The camera would then stream live video back to a monitor within her apartment: a wireless peep hole, allowing her the freedom to be productive without having her eye to the door.

Peep Hole Cam

Becky used a Pi Zero for the project and took to the internet to educate herself on how to code a live streaming camera with motion detection. Tony D’s Cloud Cam tutorial gave her everything she needed to get the project working… and a handful of magnets, plus an old makeup bag, finished of the job.

Pi Zero Peep Hole Camera

Tutorial: http://www.instructables.com/id/Pi-Zero-Peep-Hole-Camera/ Subscribe for new videos Mondays and Thursdays! http://www.youtube.com/user/bekathwia previous video: https://youtu.be/p7uUcNFfP3Q tech playlist: https://www.youtube.com/playlist?list=PLxW5bBHPfdBzmynozxfEPv2DJgyoFiqgn this time last year: https://youtu.be/kZmyXzzXqfc Connect with Becky: http://www.instructables.com/member/bekathwia https://twitter.com/bekathwia http://instagram.com/bekathwia http://bekathwia.tumblr.com/ http://www.pinterest.com/bekathwia/ https://www.snapchat.com/add/bekathwia tip jar: https://www.patreon.com/beckystern Music is “Marxist Arrow” from the YouTube Music Library

Along with live streaming, the camera could be set up to take and upload photos and video to a cloud server; a handy tool to aid in home security. Taking the project further afield, she could allow remote access to the camera, allowing her to view the hallway while away from home. Did the delivery man leave your expected package? Which of the neighbours kids is the one trailing mud across the carpet?

And seriously… who keeps whistling every time they come home?!

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Gran Check

New Zealander James Zingel recognised his mother’s concern over his grandmother’s well-being, and decided to do something about it.

Gran Check

For the Bay of Plenty Science Fair, the 14-year-old Bethlehem College student designed and built ‘Gran Check’, a Raspberry Pi-powered monitor that uses a PIR sensor to recognise his gran’s movement as she feeds her dogs, taking a photograph every morning to email back to his mother.

Gran Check

14-year-old James was concerned by the news of the elderly passing away unnoticed

James had researched similar builds on the market, noting their price was unrealistic for those with a lower budget. With the increase in average lifespans, plus upsetting reports of the elderly passing away unnoticed, he was determined to create something affordable and readily available to all, with little to no maintenance requirements.

 

Gran Check

A knob on the lid allows for the PIR sensitivity to be adjusted

The Gran Check lives within a wooden box, installed beside his grandmother’s dogs’ food. He knew it was the best location, since the dogs would never allow her to go a day without feeding them. For added peace of mind, James built the device to be self-sufficient, ensuring she’d never have to operate it herself.

James noted his grandmother’s independent nature, understanding that constant ‘check in’ calls from the family would be unrealistic. The Gran Check removes all concern for her welfare, without constantly bugging her for updates.

Gran Check

James credits the internet for much of his digital maker education

James was given a Raspberry Pi by his father, though he soon overtook the level of expertise on offer, and turned to YouTube and websites for help. 

James built the Gran Check over four weekends, and has ambitions to improve the build for others:

“I want to make it easy [to build], but also useful in loads of situations; it could also send a text message and attach a photo to it, for example. This would make sure that, for people in different situations, it’s not just one size fits all.”

It’s no surprise that James’s hard work was acknowledged. Not only did he win the award for best junior technology and best exhibit, but the 14-year-old also took home the NIWA Best in Fair Overall Winner.

To see James talking about Gran Check, and his plans for the build, visit the Bay of Plenty Times.

We look forward to seeing what’s next for James and Gran Check.

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Building Computer Labs in Western Africa

Back in 2014, Helen covered the story of Dominique Laloux and the first Raspberry Pi computer room in Togo, West Africa.

Having previously worked alongside friends to set up the Kuma Computer Center, Dominique and the team moved on to build another computer room in Kuma Adamé.

Both builds were successful, proving the need for such resources within an area where, prior to 2012, 75% of teachers had never used a computer.

Dominique has since been back in contact via our forum; he informed us of another successful build, again in Togo, converting an old toilet block into a Raspberry Pi computer lab.

Togo RPi Lab

The blank canvas…

The team had their work cut out, stripping the building of its inner walls, laying down a new concrete floor, and installing windows. 

Togo RPi

Some serious climbing was needed…

Electricity and LAN were installed next, followed by welded tables and, eventually, the equipment.

Togo RPi

Local teachers and students helped to set up the room

The room was finally kitted out with 21 Raspberry Pis. This would allow for one computer per student, up to a maximum of 20, as well as one for the teacher’s desk, which would power an LED projector.

The room also houses a laptop with a scanner, and a networked printer.

The project took four weeks to complete, and ended with a two-week training session for 25 teachers. 

Togo RPi

Forget the summer holidays: each teacher showed up every day

Dominique believes very strongly in the project, and in the positive influence it has had on the area. He writes:

I am now convinced that the model of Raspberry Pi computer labs is an ideal solution to bring ICT to small schools in developing countries, where resources are scarce.

Not only is he continuing to raise funds to build more labs, he’s also advising other towns who want to build their own. Speaking of the growth of awareness over the past year, he explained, “I was so happy to advise another community 500 km away on how to install their own microcomputer room, based on the same model.”

And his future plans?

My goal is now to raise enough funds to set up one computer room in a school each year for the foreseeable future, hoping that other communities will want to copy the model and build their own at the same time.

We love seeing the progress Dominique and his team have made as they continue to build these important labs for communities in developing countries. Dominique’s hard work and determination is inspiring, and we look forward to seeing the students he and his team have helped to nurture continue to learn.

Togo RPi

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