Category Archives: Golang

An LED display for Home Assistant Part 3

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You should read Part 1 and Part 2 of this series if you haven’t already. A problem with the HUB75 display reared it’s head almost as soon as I started playing about with MQTT: occasionally the screen would flicker, only slightly, but just enough to be noticed. At this stage I was driving the HUB75 pins with my own RP2040… Read more »

An SPI flash and iCE40UP FPGA programmer

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Before designing my iCE40UP development board, I knew I would need some kind of programmer for the SPI flash memory that would hold the design it ran. I’d already discounted the idea of using an off-the-shelf programmer: it would add more cost to the project, and it was a far too “easy” solution. Therefore I was going to build my… Read more »