The flow meter allows a hard limit to be set for the maximum amount of water allowed into the tank. He’s used an Arduino Micro to tie the project together, which also handles a real-time clock ...

Posted in home hacks Tagged air flow meter, arduino, Doppler, hvac, ultrasonic sensor ...

Utilities can improve water, gas and heating metering accuracy by an order of magnitude, while operating for up to 20 years on an “A”- size battery with Maxim’s MAXREFDES70# ultrasonic flow meter ...