I’ve designed dozens of small yet interesting electronics circuits over the years, progressing from hand-drawn schematics to ones designed on computer. I’ve always wanted to transfer these designs to PCB, yet up until now have restricted myself to breadboard and stripboard as I considered the process to be complicated for various reasons. Historically making a PCB was a messy and manual process involving etching and drilling. This instructables guide gives you a good idea of …
My first project on the Pico was the Pico-mposite, a breadboard circuit and application that demonstrated how to generate a black and white composite video signal in software using the Pico’s PIO cores and DMA and a resistor ladder as a digital to analogue convertor. The project went through a couple of iterations; from a hacked together demo to something that was a bit more usable and, more importantly, was ready, at least in principle …
About this time last year I started a simple project for the Raspberry Pi Pico to output grey-scale composite video via a simple circuit using a 5-step resistor ladder. The Pico had not been out for very long, and I was attempting to use the PIO to output the video signal. Whilst I got it working, it did feel rather hacked together. But I left it on my Github as a quick project: https://github.com/breakintoprogram/pico-mposite During …
