Hi @Chris Annin I have a problem with auto calibration My steps are as follows: 1, Press the emergency stop button 2, Manually restore ARM to Rest Position 3,Then "SAVE CALIBRATION DATA" 4,Release the emergency stop button 5,Then click "Auto Calibrate" Then the arm will start to move, and then it will touch the limit switch, and then stop, and then it seems that the arm wants to return to the original "rest position", but after about 1 second, it moves to the touch limit again The position of the switch then stopped, not like in the tutorial video. After the calibration is completed, return to the Rest Position. Then I found out that at this moment, Teensy's yellow light was on. Does this mean something is wrong?