I need to lower the RPM of a simple DC motor to almost 20 - 30 RPM for some reasons. I cannot use PWM signals or gears to lower the RPM of the motor (I know how to use them but I want a simple solution.)
Is there any other way that I could slow down this motor? I tried to lower the voltage going to the motor using resistors but it didn't work (for me at least, I connected the resistor between the motor's one wire and the positive terminal of the battery supplying 3 volts. Let me know if I did something wrong.)
I don't care about torque that much so it's not a problem if I lose some torque in the process.
Hoping for a trick that could slow down this motor without using PWM or gears.