The hvac controller design mentioned in this post has been updated with a new schematic and board design. I drew a schematic by hand and then asked another member of the team to create the design in Eagle. The plan is to have a local company create the board for us Read more…
An IoT thermostat API to connect hvac and temperature APIs The thermostat API provides controls and logic for the whole thermostat system. This component of an IoT thermostat is what ties everything together: It gets the current temperature from the temperature API, compares it to the desired temperature (and other Read more…
A web-based interface for controlling the IoT thermostat The API-based IoT thermostat system I have been working on has four main components: HVAC Controller, Software and API Temperature Sensor, Software, and API Thermostat Logic, and API Interface for controlling thermostat This post is about the fourth and final component: the Read more…
An independent temperature sensor as part of the IoT thermostat As mentioned in one of my previous posts, a typical thermostat can be broken down into four subsystems: HVAC controller for activating heater/ac/fan Temperature sensor Temperature set point: interface for setting desired temperature Thermostat: logic for determining the the hvac Read more…
