
Water filtration product circuit based on MSP430F157 with pressure, turbine and battery voltage sensors, switch inputs, LCD and piezo outputs, and battery or wall jack power.

Back side of water filtration product circuit based on MSP430F157 with pressure, turbine and battery voltage sensors, switch inputs, LCD and piezo outputs, and battery or wall jack power.

Timer circuit using MSP430F1101 processor to measure switch selectable time up to 2 years on 2 AA batteries.

Spice simulation graph showing function of a latching switch debounce circuit. Gold line is the output signal going from 0 to 5V