This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

Measuring air flow in an HVAC duct can be a tricky business. Paddle wheel and turbine flow meters introduce not only resistance but maintenance issue due to accumulated dust and debris. Being able … ...

Posted in home hacks Tagged air flow meter, arduino, Doppler, hvac, ultrasonic sensor Hackaday Prize Entry: Sonic Glasses August 28, 2017 by Brian Benchoff 11 Comments ...

New ultrasonic water flow measurement module from China’s iESLab incorporates ams TDC-GP30 sensor chip to provide high accuracy, low power consumption and long operating lifetime June 26, 2019 ...

Masterflex Ultrasonic Flow Sensors, from Cole-Parmer, accurately and noninvasively measure the flow rate of liquid in tubing used with peristaltic pumps. The ultrasonic sensor never contacts the ...