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Published 20 hours ago • verified publisher icon skot

Switch EMC2101 to ESP32 PWM

Open korbin opened this issue 9 months ago • 1 comments

To save cost, complexity, and a unique component:

  • Pull fan PWM to 5V (board gets plugged in, fan goes to 100%)
  • Add additional level shifter (TXU0304 or TXU0202) from 3V3 -> 5V
  • Use ESP32 PWM signal to drive level shifter (or MOSFETs) to set fan speed
  • Use ESP32 PWM counter/GPIO/timer/whatever peripheral to measure fan speed

korbin avatar Apr 29 '24 13:04 korbin

I like this idea for if/when we don't need the EMC2101 for temp diode reading anymore. Supposedly the BM1368 has the ability to read the temp (and voltage) out over there serial port. This needs a little more hacking/dev to get working

skot avatar May 02 '24 19:05 skot