The Sensirion SHT15 is a calibrated digital humidity and temperature sensor. It can be connected to an I2C bus, however it is not I2C software compatible. It has its own serial protocol. Refer to the Datasheet for the software details and how to communicate to this device.
The easiest way to use this sensor is to purchase it on a breakout board. These boardsare available from most hardware kit suppliers. The one we used was purchased from Sparkfun and is shown above. The board includes the pullup resisters which simplifies the hookup process.
The supply voltage of SHT1x must be in the range of 2.4 – 5.5V, recommended supply voltage is 3.3V.
Power supply pins Supply Voltage (VDD) and Ground (GND) must be decoupled with a 100 nF capacitor. Refer to Suggested Circuit below.
Click on the image below to go to the Arduino to SHT15 hookup page.