In the standard setting it is meant to connect up to 3 PWM fans (like 3 x Noctua NF-A14 iPPC 3000) to an Arduino Uno via the PWM on Pin 9, 10 and 11. The 12V power is then going directly to the 3 fans.
But….
Can I connect 2 PWM fans, instead of only 1 fan, to an single PWM output on the Arduino pin#9, 10 or 11?
(That way I could have more than 3 fans connected to a single Arduino)
I mean is the PWM signal coming from the Arduino “strong” enough to control 2 fans instead of 1 fan?
Siempre que no rebases el consumo de 3 amp, se puede hacer, pero no hace falta eso, el sistema esta preparado para 4 ventiladores, yo tengo 2 para el viento y 2 fijos, pero podria poner los 4 al viento, siempre que no rebase los 3 amp.
Saludos.
Answering my own question as I did my wind sim project: It does work.
My setting:
4 PWM fans connected to 3 PWM outputs on a Arduino Leonardo (9, 10 and 11).
Pin #10 is then used to control 2 PWM fans.