In order to control the movement of the ROV, we have to attach an electronic speed controller (ESC) to each of the motors. An ESC allows you to alter the speed of the motor it is attached to based upon an analogue input which for the ROV would be an analog stick controller. This week we tested this by trying to control our motor using an ESC and an Arduino board. We substituted the analog stick with a potentiometer to just alter the speed rather than both speed and direction.
The video below shows our test of controlling a motor using an ESC:
As shown when the potentiometer was turned the motor starts to rotate slowly increasing its speed as it turns.
To further test the motor we need to measure the torque of the motor both by hand using calculations and then underwater with a propeller attached. This will give us the force produced by each motor underwater.