Skip to main content
. Author manuscript; available in PMC: 2019 Jun 12.
Published in final edited form as: HardwareX. 2019 Apr 15;5:e00063. doi: 10.1016/j.ohx.2019.e00063

Fig. 2.

Fig. 2.

Photograph and schematic of the pressure regulator. A custom machined aluminum manifold provides ports for the inlet and outlet, two proportional solenoid valves, and a fitting to connect a pressure sensor. A PCB is mounted above the valves and includes a microcontroller, pressure sensor, valve drivers and connectors. The regulator measures approximately 4.5 cm × 4.5 cm × 4.5 cm.