Hi!I just got two PC fans in the mail today, but I have a qustion.These fans have 4 wires. Positive 12v, Negative 12v, PWN wire and a sense wire.I've read a bit on the internet about PWM control a PC fan from an arduino, and it's a bit hard to use the PWM wire.Is it possible to PWM control the fan using only the red (12v+) and black (12v-) wires. Can I just hook the yellow PWM wire to 12v+?
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