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+--- Thread: PWM signal at 5 V (/showthread.php?tid=7877)
PWM signal at 5 V - Gienek - 08-20-2019
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.