Here is the first of probably a couple circuits I will post to control the LIDAR motors rotation speed. The circuit outputs a PWM wave that you can change by adjusting the potentiometer. All parts were purchased at RadioShack and I have noted the RadioShack part number next to each symbol. The circuit works very well running off of a 3 cell LiPo pack I used for RC planes/helis. It is a 11.1V 2200mAh pack.
Be aware that the speed will change as voltage changes so for this circuit the voltage should be regulated going in. The RPM held +/- 2 RPM or better over five minutes when testing off of a battery pack that was NOT regulated. Very good results for a few bucks in parts!
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