Please read if you are not sure whether to calibrate, or how to calibrate your uArm. If you bought the uArm after April 2016, please DON'T calibrate it if not necessary. All uArms were already calibrated before sale, and you can control it or program it without calibration. Frequent calibration will cause damage to the uArm Metal To get started with a uArm bought after April 2016, please directly refer to Getting Started with uArm. If you have to calibrate your uArm, please: 1) Finish the u...