Digital Pressure Gauge 0 to 10kPa (0 to 1.75 psi) with OLED display

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https://www.electronics-lab.com/digital-pressure-gauge-0-to-10kpa-0-to-1-75-psi-with-oled-display/

The project presented here is a Digital Pressure Gauge using an OLED display. The measuring range of this unit is 0 to 10kPa (0 to 1.75 psi). Additional this compact open-source hardware is Arduino compatible. This board can be used for measuring low pressure up to 1.75psi with great accuracy. The board contains an MPXV5010DP […]

Liquid or Air Pressure Switch with Relay

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https://www.electronics-lab.com/liquid-or-air-pressure-switch-with-relay/

This pressure switch project is built using a piezoresistive transducer, LM358 OPAMP as comparator, and a relay. The circuit activate the relay when the pressure in a system exceed a given set-point. Basically, this switch can power ON or OFF a pump, valve, motor, when certain pressure is reached. A trimmer potentiometer is provided to […]