I recently picked up a serial motor driver made by Sparkfun (SparkFun Serial Controlled Motor Driver - ROB-09571 - SparkFun Electronics) that Im wanting to use to communicate with an Arduino Uno. I connected the TX and RX pins on the UNO (0 and 1 respectively) to the RX and TX pins on the serial motor driver.
Just to check and make sure everything is performing correctly, I wrote up the simple code below. I made sure to set the baud rate to 115200 bps because that is what the motor driver operates on.
I made sure to disconnect the wires from pins 1 and 0 when uploading the code through the USB cord. After doing that, I press the reset button on the UNO,and reconnect pins 1 and 0. Nothing happens after that, the TX led on the UNO will not even light up. What is going on?