7Semi One Wire Library

Arduino library for the One-Wire temperature and humidity probe. This version ports the supplied working temp_humidity.h reference, including its nine exact command frames, discovered ROM substitution, initialization order, and command 8 + command 9 measurement cycle.

Install

Arduino IDE > Sketch > Include Library > Add .ZIP Library. Install the OneWire library dependency. Open File > Examples > 7Semi One Wire Library > BasicReading. Select Arduino UNO, upload, and open Serial Monitor at 9600 baud.

Wiring

Reference setup: red 3.3 V, black GND, yellow Arduino D4. Confirm the DATA pull-up is to 3.3 V and check 5 V Arduino UNO electrical compatibility before connecting.

API

#include <7SemiOneWire.h>; SevenSemiOneWire probe(4);; probe.begin(); probe.readMeasurement(temperatureC, humidityRH).

Limitations

• One sensor per library instance; this API selects the first valid ROM detected.
• The supplied reference code does not document response checksum verification; this port checks basic invalid readings but cannot authenticate every frame.
• This ZIP is source-verified against the supplied working code, but has not been compiled with Arduino IDE or validated on the physical probe in this environment. Test before customer release.
• readMeasurement reads temperature and humidity together, rather than repeating transactions three times as in the original sketch.