jeinzi

@jeinzi@discuss.tchncs.de

• ⁨Comment⁩ on ⁨USB PD for older device⁩ ⁨⁨4⁩ ⁨days⁩ ago⁩:

  I’m not sure about the standard - but in my experience, if a PD trigger IC requests 12V, that will be supplied, no matter the current draw. I have used this to power several low power devices, for example a 12V computer fan, and I have also verified this with no load at all. There is also PD PPS, which could be used to deliver 14V or any other voltage.

• ⁨Comment⁩ on ⁨Is SPI just "slow"?⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  I noticed that you use digitalWrite multiple times for each transmitted pixel. That function is pretty slow - you should instead manipulate the microcontrollers registers directly for maximum performance. If you are using an Arduino, this article will help: roboticsbackend.com/arduino-fast-digitalwrite/