Connect signal 1 of relay to pin 4 and signal 2 to pin 3.
To change the state into clockwise rotation CWTURN_STATE, send the string CW to the Serial Monitor.
To change the state into counter-clockwise rotation CCWTURN_STATE, send the string CCW to the Serial Monitor.
Any other string will stop rotation and set the state machine to the IDLE_STATE state.
(c) TOROS Dev Team - 2018