I’ve started an autosteer setup with an Arduino and a cytron md30c, a delphi WAS and a DC motor from an old cordless driver (hrs550sl). I have an issue with the motor, if I set low voltage (low PWM) it runs slowly and smoothly but as soon as it is under load (motor engaged to steering wheel) the motor block. So, under load the motor need a lot of voltage to be able to turn the steering wheel but then it so fast and the steering wheel is going crazy from right to left and left to right.
Is it normal for a DC motor that under load it needs more voltage to get more torque? Maybe my motor is already end of life.
I’ve seen a lot of people using the phidget 3269 which I think has a lot of torque but it’s quite expensive. So, what motor do you use?
Is someone using this motor,or similar: Bringsmart – moteur à engrenages 12 volts, haute vitesse, couple élevé réversible, 24V cc | AliExpress ? Do you think the model 140 RPM can do the job ?