Sunday, October 10, 2010

Building a Furnace Flame Sensor

Using a Arduino as a furnace or boiler controller is fairly simple. You need a thermostat, a flame sensor, and a set of relays (electromechanical or solid state) to control the blower or circulator(s), and fuel pump if using fuel oil, or gas valve if using natural gas or propane.

A tutorial on CdS cells is at,

relays at,

and temperature at

See our thermostat project at

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