Top all-time · #25786
Greg Chadwick
Personal blog · gregchadwick.co.uk/blog · on HN as gchadwickprogramminghardware
Greg Chadwick's personal blog at gregchadwick.co.uk covers programming and hardware. Since 2021, 3 different Hacker News readers have linked it 9 times. The last post was in 2021, but the archive is still widely read.
Too few sampled comments (2) to say how often HN recommends it.?
Why HN links it
HN readers link Greg Chadwick's 'Playing with the Pico' series, which covers audio output and PIO/DMA tricks on the Raspberry Pi Pico, as a reference for similar projects. The comments cite the posts without judging them.
Summarised by Claude from a sample of 2 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- /blog/playing-with-the-pico-pt4/2 people · 2 mentions · first linked 2023-01-21
What Hacker News says?
Awesome! A huge amount of work must have gone into this. I did some playing around with VGA graphics from the Pico when it first came out (wrote a simple library to produce SNES like graphics, wrote it all up on my blog https://gregchadwick.co.uk/blog/playing-with-the-pico-pt6/ ). It felt like Doom should be doable but I figured you'd need an off chip RAM expansion interfaced via the PIO. Clearly not. The Pico reall…
Comment linking /blog/playing-with-the-pico-pt6/
on “RP2040 Doom”The RP2040 is a great MCU for playing with graphics as it can bit bang VGA and DVI/HDMI. There's some info on the DVI here: https://github.com/Wren6991/PicoDVI I wrote a couple of articles on how to do bit banged VGA on the RP2040 from scratch: https://gregchadwick.co.uk/blog/playing-with-the-pico-pt5/ and https://gregchadwick.co.uk/blog/playing-with-the-pico-pt6/ plus an intro to PIO https://gregchadwick.co.uk/blog…
Comment linking /blog/playing-with-the-pico-pt4/
on “FuryGpu – Custom PCIe FPGA GPU”That's really nice! Here's a blog post[1] showing how to do something very similar with the Raspberry Pi Pico, which also doesn't have a DAC. I wrote a very simple 4-channel MOD player[2] for the Pico using his sound output code. [1] https://gregchadwick.co.uk/blog/playing-with-the-pico-pt3/ [2] https://github.com/moefh/pico-mod-player
Comment linking /blog/playing-with-the-pico-pt3/
on “We don't need a DAC on the ESP32-S3”The RP2040 (as used by the Raspberry Pi Pico) can generate some impressive video thanks to its PIO. E.g. Luke Wren's work giving DVI output https://github.com/Wren6991/picodvi and the scanvideo library: https://github.com/raspberrypi/pico-playground I did a write up going over how to generate VGA video from scratch to produce some SNES like graphics: https://gregchadwick.co.uk/blog/playing-with-the-pico-pt4/ https:/…
Comment linking /blog/playing-with-the-pico-pt6/
on “Microcontroller VGA Interface Projects”You can push the DMA access into the PIO for some real fun. Just wish the PIO had a bit more logic/registers. https://gregchadwick.co.uk/blog/playing-with-the-pico-pt4/
Comment linking /blog/playing-with-the-pico-pt4/
on “Direct Memory Access computing machine RP2040”