• Arduino
  • LED Matrix


    This post is a sort of eulogy. About 5 years ago I decided to teach myself a little more about electronics and thought building an LED matrix from scratch would be a good idea. Not just any old LED matrix, a 16×8 LED matrix. That’s 128 individual LEDs along with a whole bunch of resistors, transistors and a couple of shift registers for good measure.


  • 3D Printing
  • STS Pi Adapters


    These next two prints were a little less ambitious than the Unicorn HAT diffuser. Needing a little platform to experiment with robotics I bought a STS-Pi kit with the intention of mounting a Raspberry Pi Zero (with Explorer pHAT) on it to make a teeny rover. I didn’t realise until I received it, that it’s designed to bolt a full size Raspberry Pi directly to the chassis and while you can mount a Pi Zero, you’d need extra bolts to mount one in it’s case. Not wanting to ditch a case (or buy any extra bolts), I set about designing something to fix the problem. (more…)

  • 3D Printing
  • Unicorn HAT diffuser


    I own a lot of HATs for my Raspberry Pi. Between the Unicorn HAT, Scroll pHAT and Blinkt! you might say I’m addicted to LEDs but I’ve recently managed to find a new addiction in 3D printing.

    Whilst the Unicorn HAT is a lovely, colourful, 8×8 matrix, the individual NeoPixels are naturally round and quite bright. Needing to get to grips with our Maker Space’s 3D printer I decided a good first project would be a diffuser that would turn those circular LEDs into square ‘pixels’.