vacuum pump controller

This is a controller for a vacuum pump, used to generate a constant, stable vacuum. The controller can be used over usb, as part of a pick-and-place machine, or standalone, with a footswitch.

The 3D-printed part is a housing for a pressure sensor. A BMP280 pressure sensor is placed inside the housing, a lid is put on top, a PU rubber tube is connected, and everything is sealed with silicone rubber.

Apart from the pressure sensor you will also need a 12V vacuum pump, a 12V solenoid valve, suitable for vacuum, and you will need to solder the electronics controller.

OpenSCAD source and Arduino source at [vacuum pump controller](https://github.com/koendv/vacuum-pump-controller) project on github. PCB design at [easyeda](https://oshwlab.com/koendv/vacuum-pump-controller). PCB at [oshpark](https://oshpark.com/shared_projects/RhzQyJqY) or [jlcpcb](https://jlcpcb.com/) (cheaper).