The two high torque servos for the main propellant valves arrived today. Immediately, one of them was opened up and connected to the Arduino UNO for testing. Using a 12v power supply and some quick testing code borrowed from Arduino's site the servo was commanded to rotate 180 and cycle back. This was then adjusted to 90 degrees for operating the 1/4 turn high pressure ball valves that will be on the test stand. It was soon found out though the 12v was probably not going to give it enough power to overcome the friction of the valve. A rough estimate of the torque at 12v is 90 in-lb, seemingly enough to move the valve but it did not want to move. A proper apparatus still needs to be made to properly test the servos with the ball valves.
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