You could always measure the TACH output before connecting to an Arduino to see if it can produce a useful signal and if so map that to a better output. In your case as the fans match you probably need not worry too much about matching motor starts to a frequency or simply use whatever you find kicked them in as a minimum base number. That's why I "MAP" the PWM too so in essence it gives me a little more range control and I think it saved me from a few extra calculations. The only difference is that non-PWM fans cannot be automatically controlled, they will run at full speed. The controller includes ten 4-pin headers that support both PWM and non-PWM fans. They can still stall out at the lower frequencies which is not particularly good for them. The DEEPCOOL FH-10 Integrated Fan Hub is an excellent way to control up to 10 case fans (more if you use splitters) at once. That is possibly the only time I would want to change the frequency and then only on maybe one or two outputs to ensure they are a closer match and have a suitable start up frequency that will engage the motor.Īs already suggested that once the start up has been achieved it is possible to lower the overall frequency of the PWM and still keep them rotating.īut usually at such low rotations there will be very little airflow so I prefer at that point to either keep them running at the tickover speed as I call it or OFF. External fan control from Lamptron with remote control Five channels (up to 30 watts per channel) LC display 1x 4-pin & 4x 3-pin and 1x temperature sensor. The exception being where the same voltage fans are used but they are from different makers and may have differing RPM specs. The 3 pin fan connector has three indicators (as per the number of wires): The first wire is for power (4 to 12 volts), 2nd is for ground and 3rd wire is for a tachnometric signal (speed sensor) this sensor monitors the fan speed and performance. Strimer/ Strimer Plus/ Galahad AIO/ ST120/ Bora Digital/ u0003LANCOOL II Side Diffused LED Strip/ O11D XL light bar/ DK-04F&05F light bar. I find the exiting PWM to suite most of my needs. With 5 types of cables, 2 of each, the ARGB Device Cable Kit is the solution to connect all the devices required for an outstanding build.
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