I am using Erlebrain3 to control the motion of a wheeled mobile robot. The erlebrain is to communicate with arduino via the i2c port.
When the erlebrain is powered via usb, it is able to detect the arduino address on the i2cport. However, if I power the erlebrain using the 6-pin connection on the top of the board, the arduino address on the i2c port is no longer visible.
Please what could be the issue?
Also, I noticed that when the mobile robot's speed controller is ON, the PWM connection to the throttle powers ON the Erlebrain. Please is this normal?