Servo issue..

Qwiic System
1

I have a redboard and Wrote code so that when i wave my hand in front of a ultrasonic sensor, the servo rotates.

It works fine with a a tiny servo, but when I use a hi torque servo, it doesn’t work.

I’m powering the servo separately. I know it’s getting enough power.

The servo doesn’t even act like it has power, no slight hitch when powered. But when I open the servo and power the leads on the motor directly, the motor spins.

This is my 3rd different servo.

What am I doing wrong ?

2

Can you provide photos and a schematic of your setup?

3

But when I open the servo and power the leads on the motor directly, the motor spins.

This may have damaged the control board inside the servo.

4

Newbie mistake. I didn’t use the same ground for the servo.

5

That’s what I was thinking, glad you figured it out!