Quantity   Component name
3 × MG 996R Servo This does the heavy lifting. Turns the base and moves the arms
2 × KY66 Longruner Servo This does the precision work; moving the paint brush
1 × Arduino
1 × MaxSonar EZ I haven't implemented this yet, but it will calculate the distance from the paint brush to the canvas. It's probably not even necessary tbh.