This workshop will cover everything in workshop Level A but will have one day devoted to controlling ROVs using the Arduino microcontroller. Participants are required to have experience working with Arduino. If participants are not proficient with Arduino, it is recommended to take the Diving into Underwater Sensors and Arduino online course. This course will give participants the needed background and experience with Arduino to successful participate in this workshop. Additional workshop topics will include remote control using Bluetooth and relays for the control of actuators. Participants in this workshop will build the SeaMATE Barracuda ROV.