Flowmeter Sensor Arduino Mega2560 TFT 2.4″ Arduino Shield Touch Pressure Sensor XL4015 5A DC-DC Step Down Adjustable Power Supply Module Buck Converter XL6009E1 DC DC Boost Converter Module Li-ion ...

Note that with the “DFR” sensor, we get a signal output very close to VCC (in digital mode) when the sensor is not submerged or is in clear water (and a bit lower than that in analog mode). Here’s one ...

The Pulsemeter daemon counts the events received by the Arduino sensor and writes them into a Round Robin Database. The RRD database is accessed through the rrdcached daemon located at a local unix ...