Important changes to forums and questions
All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.
8 years ago.
Why won't 8x20mm small dc motor not spin with the stspin240 board?
Using the code provided by ST to run the program on the expansion board, I can get a 6V dc motor spin on 2S 7.4V Lipo battery. However, I cannot get a small quadcopter dc motor rated for up to 4.5V to spin on a 1S 3.7V Lipo battery. I even tried the 7.4V battery on the small motors and get no movement. I can see the LEDs stepping through each of the cases but the motors remain motionless.
I have tried a few different PWM frequencies without success. I am sure I have the right motor and battery combo that fits the minimums of the STSPIN240 datasheet, so what else could be the problem?
Question relating to:
Last updated: 16 Apr 2019
Be the first to answer this question.
Does the 4.5v rated motor spin if connected directly with the 3.7v Lipo battery ? Do not recommend to use a higher voltage than rated by the manufacturer but first confirm the motor is able to spin without the stspin240 board.
posted by Sanjiv Bhatia 26 Nov 2016The small motor spins just fine on a different motor driver IC.
posted by Heather Holmes 26 Nov 2016