OpenPAP is an open hardware, open source CPAP / BiPAP solution than can be build for about $120. Use it as an emergency backup machine, a travel machine, a camping machine or your daily driver.
- Resmed motor (example)
- 5A 12v to 24v power supply (higher voltages support higher pressures - example 12v / example 24v)
- 4S to 6S ESC (brushless motor driver, depending on voltage - example)
- ESP32 microcontroller (example)
- Air pressure sensor (example)