Due to a double booking at the University of Gloucestershire, we’ve had to move the Cotswold Jam out by a week to Saturday 2nd July. Current tickets remain valid, but if you can’t attend, please e-mail admin at cotswoldjam.org so that we can free your tickets up for others and return any voluntary donation you gave.
Thanks, and hope to see you there.
Cotswold Raspberry Jam
Get your free tickets ASAP – 50% sold in first 3 hours. Last time we synced up with the Pi Zero launch by accident; this time it’s the RPi 3!
I’ve just quit smoking saving myself £300 a month, and I was going to treat myself to a new vacuum cleaner as a reward – I have an older version of the same and it’s fab but this one is even fabber.
But I’ve also started putting together a new python + electronics tutorial for the next Cotswold Jam at the end of April, both setting up my own prototype, and collecting components for 24 kits to be given away to tutorial participants. Sadly, this has taken a significant proportion of my Dyson money, but I think the result of my prototype looks pretty cool, literally:
Door alarm system
Big thanks to Pimoroni for the custom Snowflake white version of their limited edition PiBow B+/B2 Coupe Midnight Black, the discount on the 25 mini-PCBs for the kits – you’re stars!
The give away kits will have smaller breadboards instead of the cakeboard shown above, but they’ll all come with the doors with neodymium magnets as the door knobs, reed switch, buzzer, on-off switch and wires.
I’ve been meaning for ages to get my turtle* project back up and running, and having put the quad siblings to bed for a while, I’ve finally had time.
By using a B+, I finally have enough GPIO pins to drive the stepper motors directly via 8 pins and mosfets rather than using the 74HC595 serial to parallel latch. That’s simplified the circuitry and software a lot. I’ve also turned the turtle into a WAP. Finally, I’ve swapped batteries from unregulated 2S LiPo to a 2.4A phone charger bank. This gives just about enough power – the 2.1V battery bank shown in the picture didn’t work – the motors drew enough current to trigger a safety switch in the battery.
I’m hoping to do a tutorial at the next Cotswold Jam, starting at a flashing LED and ending in a robot in 10 easy steps. In the meantime, just watch her boogie!
Turtle boogie! from Andy Baker on Vimeo.
P.S. For a giggle, watch the original “Yes Sir, I can boobie” on youtube.
*A turtle should really have a pen controlled by a solenoid to leave a trail as it wanders. A more useful implementation for the modern era would be as the base for a laser cutter, or 3D printer: consider attaching the stepper motors to a fixed base at 90° to each other independently manoeuvring a suspended platform around underneath a fixed position laser or molten plastic feeder? It’s only a different LEGO layout from what the turtles doing now.
In fact, my next project, piPlotter, has just been conceived, using the turtle motors to move a Raspberry Pi 7″ touch screen running a draw application with a stylus touching the screen to draw out the movement. More of a LEGO project than a RPi project, and a lot more fun as a result. Oh, and cheap too!
The next Cotswold Jam is now confirmed – more details here
Cotswold Raspberry Jam
There are still some tickets left for the yummy event! Drop by and see the fruit and nuts!
Yet another confidence building test flight from Andy Baker on Vimeo.
I’ve flying Phoebe virtually every day the weather allows in preparation for the indoor demo flight for the CotswoldJam on 26th September 1pm – 4pm at the University of Gloucestershire in Cheltenham. I can confidently say she’s safe.
P.S. Sorry about the video quality, the camera really didn’t the shoot in the shade with sunshine back light.
Tickets for the next Cotswold Raspberry Jam on Saturday 26th September from 1pm to 4pm are now available via the Cotswold Jam website.
After a couple of months searching for a new location, we’ve found the perfect new home – the new Computing Sciences department at the University of Gloucestershire in Cheltenham.
The next Jam is likely to be on the 26th September, assuming the builders have finished their work – yes, the location is absolution brand spanking new. Updates on what’ll be in the next Jam will be on facebook, Twitter, and on the website.
Very, very excited!