from Hacker News

STM32 Blue Pill as an Hid USB Keyboard

by thealienthing on 8/30/23, 4:37 PM with 33 comments

• by gaudat on 8/30/23, 5:48 PM

  The F103 microcontroller on the blue pill is the epicenter of price hiking during the semiconductor shortage. I've seen prices upwards of 35 USD for each chip. It was more expensive to get one of these chip than to get a Raspberry Pi.

  I think it is better to use the Nucleo series of evaluation boards from ST now as they have first party support from ST.

• by pimlottc on 8/30/23, 5:51 PM

  Can someone explain what this is actual for? Is this just a tutorial for creating your own DIY USB client device?

• by extraduder_ire on 8/30/23, 8:04 PM

  Do these boards still have that design flaw that prevents them from working right with USB? Especially for programming.

  I remember replacing a resistor on one four-ish years ago, so that I could use it in a usb2 port. (worked fine with a usb 1.1. hub)

• by askiiart on 8/31/23, 4:40 AM

  On that note,, does anyone have some resources on using a phone as a USB keyboard? It would be pretty useful not to have to haul around my bulky keyboard when I'm, say, just working on my server. Requiring root is fine.

• by leshow on 8/30/23, 9:22 PM

  I've got one of these from way back and was meaning to do something similar in Rust. Yet another project that I just never got around to.