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Wood Stove Fireplace Insert Controller - Beyond NEST - Mike Seiler, MSEE
Adventures in Engineering Trade-Offs

Wood Stove Fireplace Insert Controller – Beyond NEST

 

Wood Stove Fireplace Insert Fan Speed Controller with Graphic Display

Wood Stove Fireplace Insert Fan Speed Controller with Graphic Display

There are some home temperature control situation that don’t work with a NEST.

In my example, I am controlling the fan speed for the blower of my wood fireplace insert.

I want to be able to control the fan speed depending on stove temperature as well as time of day.  In addition, it’s helpful to have a display that graphs the stove temperature for the last couple of hours.

In the prototype, I am showing the time, and blower exhaust temperature in Celsius and Fahrenheit. This forced air is used to heat over 1000 square feet from my fireplace insert.

Modules visible are the arduino UNO, AC fan speed controller, DS3231 real time clock module, 2×16 LCD display, thermocouple interface and 128×64 OLED graphic display. Usually, the graphic display shows a gradual curve as a piece of wood burns.

My next step is to combine the two displays into one 320×240 display (code already written) and put the historical temperature data in the cloud.