Wednesday 29 July 2015

Really simple

This DIY thermistor is based on NTC temperature sensor and relay PCB. It is programmable and can act as a heater or vice versa as a cooler.

It's cold so let's give power to the heating elements:


Oops. Now it's too hot so let's stop heating:


Temperature has fallen enough to exceed thresholds so let's start heating again:


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