Pin number of NyBoard
Apr 12, 2021
First, be sure tu use the battery, the USB doesn't deliver power to the motors. The servos aren't connected directly to the processor (the Atmel 32 chip), but to a multi-PWM driver (PCA9885 chip). If you think in terms of Arduino board, the motors aren't connected to the PWM pad of the Arduino (pins 9 /10 for UNO) but to a servo shield. So you can't use the Servo.h library, you have to use some dedicated library, such as Adafruit_PWMServoDriver.h which appears in the OpenCat sources. I don't know if this answer makes sense to you. It will depend on your background. I can elaborate more and/or write an example if you need.
Battery not working. Repairable ?