I have a cheap heat plate which internal thermostat sucks and I wanna replace it with a Raspberry Pi!
I get how it is supposed to work and what parts I need:
* RPi B+
* Relay board
* Temperature sensors
* 30l pot
* 2kW heat plate
My heat plate has a thermo fuse that goes off at 214 degrees C.
Should the sensor who determines if the RPi-thermostat should be ON or OFF be placed into the water/pot or should it be placed in contact with the heating element of the heat plate? Or do I need a sensor both in the water, and inside the heat plate?
The most logical must be to have the sensor into the water… But is there no risk for the heat plate to fry before the water reaches higher temperatures?
Need to get some directions on where to go!