PWM signal at 5 V
#1
Hello,
  I would like to use the PWM fan from Noctua (‘NF-A8 PWM’ - https://noctua.at/en/nf-a8-pwm) with my ROCKPro64. This fan requires PWM signal at 5 V and 25 kHz frequency.
As I understand, the only easily available PWM signal on ROCKPro64 board is PWM_1 (GPIO4C6) connected to board connector J8 (FAN). But it has 12 V at this connector. Somehow I do not like idea of shifting it back to 5 V.
  
  Is there any place on the board, where I could obtain this signal before it gets shifted to 12 Volt? Maybe with little soldering...
Also, may I cause any problem, if I change frequency of this signal to 25 kHz?

  Greetings to ROCKPro64 community at my first post!
  Gienek.


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