Month: July 2012

Building the Heating / Air Conditioning Thermostat – Part 3

We continue with the project by building the temperature sensor module. We are using our favorite, the Dallas DS18B20 digital sensor. It uses one pin to communicate with the Arduino, along with +5vdc and Gnd. We add a 4.7k resistor between pins 2 & 3. Because we are using a single sensor, we do not …

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Building the Heating / Air Conditioning Thermostat – Part 2

After looking at the documentation on our White Rogers thermostat, it looks like we can simplify the operation as such: Now this would be fine, if we were just interested in manual control, but we actually want this to be automatic, like the original, based on temperature, so we need to give the Arduino the …

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Building the Heating / Air Conditioning Thermostat

Our existing thermostat is a White Rogers that currently controls our Air Conditioner and Electric Furnace. We will be replacing this with our Arduino and LCD display. Attached are the photo’s, schematic, and documentation of the existing control. We will post the code and schematics of the new system as it develops. More details on …

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