Servo Valve
Description
The servo valve allows to control pneumatic devices using standard or micro RC servos, making it a very cost-effective solution for controlling pneumatic projects. The valve body is the same as in the [manual valve](https://www.thingiverse.com/thing:3200326), so the connections are compatible with the [manifold base](https://www.thingiverse.com/thing:3202156), [connectors/valves](https://www.thingiverse.com/thing:3142024) and [logic gates](https://www.thingiverse.com/thing:3186352). After assembling the servo valve(s) these can be controlled using suitable servo controller hardware and software. There is one important pecularity in controlling this type of servo valve: the setpoint is often not reached due to friction between the valve and switch (undershoot). If not accounted for, this would keep the motor powered and cause high current consumption, a buzzing noise and stress on the servo teeth. A good solution is to initially add 2° to the setpoint and revert to the original setpoint after 350 ms. Download the [Arduino library](https://github.com/vgroenhuis/PneumaticStepper) for effectively controlling motors and other devices using these valves. Video: https://youtu.be/523QuGY_VwU
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