Demo for 1-Wire Temperature, Humidity and Light Sensor (DS2438)
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OneWireHumidityLight-Demo.ino
README.md

README.md

Demo for 1-Wire Temperature, Humidity and Light Sensor

1-WireHumidityLight Website

Arduino demo sketch that queries and shows the following data from the DS2438 1-Wire chip:

  • VAD voltage between pin 1 and 4 (GND and VAD) connected to the analog humidity sensor;
  • Internal temperature;
  • IAD voltage between pin 2 and 3 (vsens+ and vsens-) in millivolts connected to the shunt resistor and the photodiode;
  • VDD voltage between 1 and 5 (GND and VDD) supply voltage.
  • Also calculates and shows the relative humidity using VDD, VAD and Temperature.