Hello all, I have made a binary clock by multiplexing leds, that part works great! However, I'm trying to get a servo to ring a bell at the hour  (a warm touch). I have loaded the Servo library, and played around with Pwmout (at around 20ms pulses).  I cannot get the servo to move at all. I have tried three different servos. All servos were getting an isolated 6 volts of power. The servos DO work, I am connecting the input pin of the servo directly to the output pin of the mbed (p21, p22, etc.). just plane dead.. What am I missing? Thanks!

-Alex

www.brainlubeonline.com

You should just try to connect the servo to the power out of the mbed.

If you are using external power make sure that you have a common ground and that the ground of the mbed is connected to the ground of the external power supply.

I have used the servo library with no issues.

I was not sharing a ground. Duh.  That was it. THANKS!

No problem, glad you figured it out!

how do i connect a rc servo to STM32L432KC mbed