I had this tiny kiln on the shelv for some decades already, my parents gave it to me, when I was a teenager but it never was used due to the lacking temperature control. I only melted some metal with it but never did ceramics. It is an UHLIG U15, I think they are still sold. Max temperature 1050°C, draws 900W, so at 230V little less than 4A. Now due to 3D printing I thought of some neat ideas that could be done in combination with the kiln. So I deceided to build a control unit for it. At this point be warned, I take no responsibility for the things you are doing, especially not when it comes to high voltage or high temperatures. Do not play games if you don't trust in what you are doing. The cheap kiln usually don 't have any control units, with some luck you can buy some random on/off control for them but there is no real temperature control. My version got it and you can program different times and temperatures. You need the following things: Thermocouple element,...
I just figured out that these small switches are no good idea for the trigger. They don´t feel nice with their "click" and they will wear out pretty fast I guess. I´ll use reed switches instead. Another thing worth to be mentioned is that the powerbank powersupply will require some "keep alive" circuit, because they switch off when the current drawn is too low. So either circuit or battery instead.
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