Guest post from DesignSpark: Oxford Raspberry Jam

Here’s a guest post from our friend Pete Wood at RS Component’s community arm, DesignSpark. Pete is one of the organisers of the Oxford Raspberry Jams. This post was first published at www.designspark.com.

Raspberry Jams are now being held all over the world; I’ve been trying to go to about one a month, and am lucky enough to be in Tokyo for some press and meetings while the Tokyo Jam is on later this month. There’s a list of events in each month’s MagPi, and if you’re looking for something near you, it’s worth checking the events page on our forums. If you can’t find a Jam near your home, why not look into setting one up? There’s information on how to get started at the Raspberry Jam website, which Alan O’Donohoe tells me will be getting a redesign in the coming months.

Over to Pete!

This month’s Jam held at DesignSpark HQ in Oxford UK was our biggest turnout yet, with over 30 Pi Geeks crammed into the room!

Raspberry Pi Camera

I kicked off the event by showing the new Raspberry Pi camera module, which will be available from RS Components later in May. In the picture is a pre-production module, the production version is a couple of millimetres taller. The camera gives stunning HD video from a 5MP sensor at 30 FPS.

Digital Signage

Next up was one of my RS colleagues, Pete Milne, who showed us his Digital Signage application. Pete has connected up a network of Raspberry Pis to flat screen TVs here at the RS Oxford Offices and at our main facility in Corby, Northamptonshire. The Pis run a libreoffice slideshow in a continuous loop and display Health and Safety messages for RS employees. He’s been running these continuously for over 8 weeks without having to re-boot, so it’s very robust. The Pis runs without a keyboard or mouse and the content can be updated remotely over the network.

If you want to create your own Digital Signage Application, Pete has shared how to do it on GitHub. Just follow the INSTALL file for setup details.

Wii Controller Car

Oxford Raspberry Jam regular Alex Eames presented another cool little project using a Wii controller and Nunchuck. This one was for controlling a remote control car that has an on-board Raspberry Pi with Bluetooth dongle. It also allows the control of brake lights, headlights and indicators and also drives an aircraft propeller. Alex plans to build all this into the car itself, which would need to accommodate the Pi, the electronics hanging of the GPIO, some model aircraft batteries and the motor and fan. Alex, I think you need a bigger car… how about a Monster Truck?

You can read more about Alex’s project on his blog.

Giant Video Wall

Our next demo was one that has been featured on the Raspberry Pi site a few weeks ago for a Raspberry Pi powered video wall. Alex and Colin from the Culham Centre for Fusion Energy (CCFE) have built this system in C and some Python Code. It has clever features like bezel compensation to accommodate different styles of screens. They showed a 4 screen setup, but have also run a 9+4 configuration. The software is scalable to any size or shape. Each screen needs a Pi, and one separate Pi is used as the master. This is a classic example showing that you can build your own video wall for a fraction of the price of a commercial solution that would certainly cost a lot more! Chaps, I can see a business opportunity here for screening big screen sporting events on a budget down my local pub. ;0) They expect to licence the software/design at some point. More details are available on their website.

Motion Detected Camera

Another Oxford Jam regular, Dave R, showed his Pi with a webcam motion detection system and linked to a DSLR. Dave created this for his bird table, to capture pictures of birds when they land on the table, I think I need to build a similar solution to stop my kids from stealing my Haribos…

Touch Screen Display

Paul had two projects to show. The first was a simple touch screen for the Pi to allow control and display. Paul was reading and displaying temperatures. The screens are semi-intelligent, storing screen images and having a sound output available. The screen images are loaded via a Windows app and USB connection. The Pi can then control the display of those images.

Sky Remote Controlled LED Lighting

The second demonstration was a programmable LED strip and infrared receiver, controlled by a Sky TV remote control. A simple Python script reads the codes from a remote control. He could the use this to flash the LEDs in various patterns and colours. The LEDs are driven by SPI and can be daisychained up to 1024 LEDs.

ChiPhone

Paul M and Annierei L, showed us their ChiPhone box. ChiPi is an Electronic messaging system for children allowing them to send and receive voice messages. They have designed a child friendly box with large buttons and microphone. With simple record and ‘To/play’ buttons it makes for an easy messaging system connected to the internet via WiFi. You can find out more about their project on their website.

Pi Keyword Cruncher

Pi Jam regular and Data Geek John finished off our live demos by showing us his Pi based RSS feed collector and keyword analysis tool. The Pi collects data from various RSS feeds every 30 minutes and stores the results in a MySQL database. The data is then used to monitor trends in keywords, which over time show either peaks of activity or trends of ‘chatter’ about specific topics. The advantage of John using his Raspberry Pi Instead of his 50W laptop, is that it the Pi only takes 2W and can be left on all the time. It also frees up his laptop to do other tasks.

RaspBMC Toddler In-Car Entertainment System

The final presentation of the evening from one of my Jam co-hosts Alex Gibson, who in true Hollywood awards winners style couldn’t attend in person so sent a video message! Alex’s video featured his project for a Pi based RaspBMC In-Car Toddler entertainment system. One of the most impressive bits was a headrest bracket he had printed out on his Raspberry Pi-based 3D printer.

Thanks to all those who showed their projects. Looking forward to the next event!

We have loads more excellent Raspberry Pi content on DesignSpark, check out our Raspberry Pi Design Centre.

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