Introduction: Heating Control Using Raspberry Pi and Cayenne App

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This is the over view of my project that dose more then just the heating but I will try to explane the heating control side

Step 1: THE HARD WARE

raspberry pi B as the many controller

two of the relays to control the switching of the boiler

4x 1wire DS18b20 temp sensors

and a conversion board to control the relays 5v logic with pin points to connect the sensors

Step 2: THE CAYENNE APP

Using my devices with cayenne app on my phone is easy to crate schedule's and trigger points for high or low temp and even monitor each zone ,

and using the online dash to over ride the relays is made easy.

Step 3: How It Works

with the cayenne app scheduler widget one of the relays will only switch between set times and with the trigger widget the second relay will only switch if the temp drops to the set trigger point.

So using the sensors in each room I can set individual low and high trigger points so if the temp drops in one the heating will switch on and if it gets too high in another it will switch off only between the set time.

and running the relays in series with both the schedule and trigger widget they both need to be switched before the heating comes on.