5 ms·
I’ve used this board for an LED cube, but in general I don’t recommend it as a cheap general purpose FPGA board due to the lack of inputs, the different version
by tverbeure 9d ago
I’ve used this board for an LED cube, but in general I don’t recommend it as a cheap general purpose FPGA board due to the lack of inputs, the different versions, and the uncertainty about getting access to the JTAG pins on later versions.
The Colorlight I5 is a much better choice for that. It’s also a high volume and this cheap HUB75 controller board but with a plug-in configuration so they all pins can be used as input or output.
See my old blog post about it: https://tomverbeure.github.io/2021/01/22/The-Colorlight-i5-as-FPGA-development-board.html https://tomverbeure.github.io/2021/01/22/The-Colorlight-i5-a...
- zoobab 9d ago"getting access to the JTAG pins" I have seen some of the boards being reflashed with DirtyJTAG and openfpgaloader. JTAG pins might dissappear from the board? There is a video here "Pico-DirtyJTAG: Cheap JTAG Programmer! Raspberry Pi Pico for Lattice ECP5 + Icestudio": https://www.youtube.com/watch?v=Yj1X4PIoQGg https://www.youtube.com/watch?v=Yj1X4PIoQGg
- tverbeure 8d agoI have some HUB75 boards where the JTAG pins are covered with solder mask or only available by scratching solder mask from non-descript traces. These boards are programmed in production with SPI pins or assembled with preprogrammed PROMs.