Motor power on Romeo

Hello, I have an Arduino Romeo to control a motor. A battery that powers the arduino and the motor, but the motor receives almost no energy.

Interesting. Are you going to let us have any of the information that could be useful for diagnosis?

Which motor? Datasheet, or at least current requirements. Which battery - sounds like LiPo - is that the case? Why do you call it 2A? Surely 2Ah ? The code you are using? The connections / circuit between Arduino and the Romeo board?

Motor : Mabuchi 380 (9.6V)
Battery : here
Code : Sample code for PWM control

The connections / circuit between Arduino and the Romeo board?

I’m not understand. The Romeo is the Arduino.

Romeo is Arduino compatible, made by DFRobot.

Show the complete code YOU are using, not the link to the product page.

Do you have jumpers installed?

Cheers, Kari