Bognor Regis Raspberry Jam – Saturday, 9th December

Chichester University Outreach and Raspberry Pi Community veteran Carl Monk are organising the very first Bognor Regis Raspberry Jam on Saturday, 9th December. The event, which runs from 1-4pm, is starting out as a Show and Tell afternoon at which exhibitors can show off their creations to visitors, both experienced and beginner. You can get free tickets to attend the Jam by visiting Eventbrite.

Carl is looking for volunteers and helpers to run the event, so if you’re available please contact him at bognorregisjam@gmail.com.

Review of the MeArm Pi robotic arm for the Raspberry Pi

Following a successful Kickstarter, Mime Industries are now starting to deliver their interesting robotic arm kit, the MeArm Pi, an update to their previous MeArm. The new kit comes with a HAT to control the arm via two mini joysticks and the arm itself has been completely redesigned to be much easier to assemble and use. In a recent issue of The MagPi, the magazine team reviewed the MeArm Pi and now they’ve published the article online – you can read it here.

Braille-reading device powered by a Raspberry Pi

Joe Birch‘s family is predisposed to failing eyesight. As a result, he decided to build the BrailleBox – a motorised Braille creation device which reads in online news stories and converts them into patterns for the blind. Solenoids were used to project upwards small wooden balls into the patterns which represent letters. The software end uses AndroidThings. The main script runs on start-up and a button press is detected which triggers the retrieval of a news item and the automatic translation.

You can see it in action below:

Thanks to Raspberry Pi for spotting this one.

Artificial life project using a Raspberry Pi and Unicorn HAT

Michael Darby wanted to create an “artificial life” project. So, he took a Raspberry Pi 3 and a Unicorn HAT and created a Python script to do it. He had the following goals:

  • Create a number of artificial lifeforms that can move around a board and have colour/movement properties assigned to them via 3 random numbers; the ‘DNA’ of the life-form – and display them onto an easy-to-observe output.
  • Have those artificial lifeforms be able to interact with each other to ‘breed’ and pass along their traits to offspring, as well as ‘kill’ each other to keep the population in check.
  • Have random chance for ‘genetic chaos’ whereby instead of passing along a life-form’s properties to its offspring a random number is inserted into the offspring’s ‘DNA’.
  • BONUS – plug the code into the Minecraft API and see what random patterns of blocks can be spawned from the artificial life-form’s movements and properties.

The script takes in the following parameters:

  • Number of lifeforms to start with.
  • The speed of the program.
  • The maximum number of lifeforms that can be ‘on screen’ at any one time.
  • Maximum lifeform lifespan.
  • An “aggression factor” controlling how likely a lifeform will be to attack another.

It’s a wonderful project and you can read more (and download the code) here.

One would imagine with a bit of adaptation, you could use the same script with the Unicorn HAT HD and get even better results.

Have your very own Star Wars fight with this Raspberry Pi-powered project

California-based Richard Arellano has developed this lovely live-action Star Wars duel. It features a Raspberry Pi with camera module pointing at two Star Wars figures of Yoda and a Sith Lord. These figures are sat on a motor a-piece and you can control:

  • The lighting
  • Which character takes a light sabre swipe at the other
  • The message that appears on the LCD screen.

You can have a go yourself by visiting Richard’s interactive website.

pi-top launches the next generation of Raspberry Pi laptop

pi-top, the creators of the World’s first commercial Raspberry Pi laptop and the desktop version, the pi-topCEED, have just announced that they have re-designed their most famous product – itself called the pi-top. This laptop, which is powered by a Raspberry Pi, was a great success when launched on IndieGoGo back in 2014. Judging by the fact that they’ve now redesigned it, one imagines that their success has continued.

The new model

A ground-up redesign has been undertaken over the last 12 months and has resulted in a higher-spec laptop with interesting new design features, as well as a packaged project kit that is sure to catch the eye of both home users and educational establishments alike.

So, what are the actual differences?

  1. It’s much simpler to assemble – instead of 23 build steps (!) it now has only 6. This is definitely an improvement and really does show how hard they’ve been working on it.
  2. The trackpad has moved from the side (always slightly odd) to a more familiar central position. It has also been made half-again-as-large. A big improvement, in my opinion.
  3. Instead of the perspex ‘slice’ that you used to pull out sideways to reveal the Pi, the keyboard now slides downwards to do the same job. I’ll be interested to see how well this holds up under punishment from the open-close action. Will the connection from the keyboard to the unit be a weak point?
  4. The keyboard is now US-layout-only. This is sure to infuriate some, but according to my sources there may be a UK version depending on the success of the product.
  5. The screen is bigger – it is now a full 14″, compared to 13.3″ of the old model, and is full HD. Resolution has increased from 1366×768 to 1920×1280. Now, that’s impressive – I never complained about the resolution of the old model, but this one is going to be much crisper.
  6. The maximum lid angle has been increased from 125 degrees to 180 degrees, which means different viewing angles are possible. Again, not anything I complained about on the original, but a nice improvement.
  7. Included with the package is a specially designed passive cooling system (called the Cooling Bridge, a big heatsink, essentially), which will sit over the Pi and the driver board, cooling both. This is music to the ears of anyone who has ever had problems with the temperature warning symbol appearing on the Pi when using pi-topOS. It was essential that they did this due to pi-topOS being quite intense, resource-wise. I would have preferred that they improve the software so that this wasn’t necessary, personally, but I can see the argument and at least they’ve done something.
  8. The accessible ports have been moved to the back of the case thanks to a re-jigging of the position of the Raspberry Pi. The Pi is screwed in, rather than magnetically held (such as on the CEED). I’m in two minds about this. On the one hand it means the Pi is held securely and everything is more like where it should be, but on the other hand it means you can’t remove the Pi as easily.
  9. One of the Pi’s four USB ports is now used up to connect the keyboard/trackpad.
  10. Instead of the fiddly screw-on rails of the old model, they have put in a CEED-style magnetic strip rail for adding peripherals. This is so much better – the CEED had it right, so it’s only sensible to bring that over.
  11. Aesthetically, instead of the vibrant green being an all-over affair, there is now a grey bezel around the edge of the screen to contrast with the green of the keyboard area.
  12. The battery life has been shortened from 11 to 8 hours (a bit of a shame, but still… 8 hours is a lot better than most laptops manage). The battery is probably lighter as well because the product is significantly lighter overall – instead of 2.5kg, it is now a svelte 1.5kg!
  13. Included in the package is an SD card removal tool – their answer to the awkward position of the Pi’s SD card, I suspect. A good solution, considering the alternative of not being able to get the SD out without unscrewing the Pi. The tool doubles as a screwdriver – handy when assembling.
  14. The SPI bus is no longer used on-board the driver board, which means it won’t conflict with any HATs or add-on boards – a bit of a bugbear amongst enthusiasts.
  15. And, perhaps best of all, they are including an Inventor’s Kit. The main part of this is 3 “Inventor’s Journeys” – Smart Robot, Music Master and Space Race. You can see a picture of the Smart Robot below together with the parts kit that is included. A full list of the contents wasn’t given to me, but it looks like lots of LEDs, resistors, sensors, a breadboard and jumper wires. In these Journeys, there are more than 20 individual projects to complete. They’ve really upped their game in this regard! I’ve also taken a look at the documentation that comes with the package and I must say I’m impressed. See the bat example below:

It’s beautifully designed, and fits in with the overall ‘feel’ of pi-topOS. The package is made complete by the inclusion of an SD card with the latest pi-topOS (Polaris) pre-loaded. I’ve used Polaris a fair amount, and the OS gets better with each release.

Conclusion

Basically, pi-top have done it again. They’ve taken their flagship product, listened to feedback, explored new options and new technology and developed a fantastic new updated laptop model. I can’t wait to get my hands on one!

Where to buy it

The new pi-top is currently available in the UK from ModMyPi for £259.99 (inc VAT, without the Pi) or £289.99 (inc VAT, with the Pi) or from RS Components for £220.99 (plus VAT, I think that’s without the Pi, but not sure). It is also available from pi-top themselves for $319.99 (including the Raspberry Pi) or $284.99 (without the Pi).