Use the cable-mounted JSN-SR04T transducer for splash-prone distance measurements while keeping its controller board dry and accounting for the blind zone.
Read relative ethanol-vapor changes from an MQ-3 only after warm-up and calibration; the module is not a legal breath tester or certified safety instrument.
Control the ISD1820 record and playback inputs from Arduino while respecting the selected board's trigger behavior and recording duration.
A load cell combines strain gauges in a bridge, and the HX711 amplifies the tiny differential bridge voltage and converts it digitally. It does not…