Fancontrol.ino Arduino PWM fan control. This is a temperature-based fan controller using PID logic and PWM signals to control PC fans. Check out this instructable for a setup overview. External libraries:
Arduino Library for controlling PC fans ... Device Control License MIT ... Supports 3 pins and 4 pins (PWM) fans. Downloads. Filename Release Date File Size ...
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Mar 29, 2017 · To control the motor, the PWM input needs to be connected to the board. By looking at the code above, the PWM output is attached to pin 9. Using Figure 3 above, use the white lead or the middle wire, and attach it to pin 9 of the board. Now it’s time to run the program.
If they are PWM, take a small flat-headed screwdriver and pull the PWM pin out of the fan connector by pushing the metal part on top and pulling it back. Then solder/crimp/twist another wire to that and connect it to the arduinos PWM 3 header. Then you're done, I've connected 3 fans to the same header and it works fine so far.
Fan speed control extends fan service life and decreases acoustic airflow noise and average fan cur-rent. The most efficient way to implement fan speed control is to use low frequency pulse width modulation (PWM). However, PWM fan speed control can some-times introduce unwanted acoustic noise at a fre-quency equal to that of the PWM itself. This is
I used cheapest PWM fan I was able to get therefore this type of fan still spins at its minimum RPM even PWM is set to 0. I solved this using a transistor as a switch which cuts the power supply to the fan under the lowest temperature threshold. When using PWM fan changing the Arduino frequency is not needed so I left it to default.