Thermostat Device with SHT15 to Arduino Connection

The connection of SHT15 with Arduino is useful for thermostat projects that are often requiring some kind of humidity and temperature sensor.

In the simple design, the SCK and data lines are each pointed to a digital input/output on the Arduino and the Vcc goes to +5V. The SHT15 was used because of having both a temperature and humidity sensor while using a digital 2-wire interface. Some wires of the breadboard have to be soldered onto the SHT15 breakout board. the power supply pings can be decoupled with the use of a 100nF capacitor for the GND and Vcc.

Some custom code is needed to be written in order to get the sensor to communicate with the Arduino. This code will manipulate the data and clock lines by pulling them high and low at correct times. It would be a great experience learning to do this task for those who lack experience at this scenario.

In getting all the timing right, the C source code was used which can be obtain from some websites, although there was a problem in outputting the actual temperature and humidity values in human readable form.

Rest of the project