annesophie98:
I'm a complete noob and I'm trying to build a robotic arm with Arduino and four servos. I've managed to make the servos move by hooking them up to the Sweep program, but apparently I need to calibrate them before I put them into the arm. Why do I need to calibrate them and how do I do that? (They all take 6 volts, by the way).
You need to know what servo value corresponds to what angle in the arm.