This is a nice, starter kit that includes an enclosure, power supply, and heat-sinks. The micro SD card needed for the Raspberry Pi comes in this kit. Recognize that the Pi 3 will take up to 32 Gig. so this SD card reaches the full capacity for the Pi 3.
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I used a type K thermocouple. This may be overkill since I only see temperatures up to about 180 degF, but it is robust, accurate and will allow you to install it in hotter areas of your stove if you choose.
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It turns out that the thermocouple lead in the above kit is pretty short, only about 3 feet. I'm sure I could have made it work, but I opted to get a 2 meter long lead just in case.
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This is the crown jewel for my project. This linear actuator has the precise stroke (1 inch) and has built in limit switches so I don't have to worry about over-driving the unit. It operates in temperatures up to 120 deg.F as well. Progressive Automations makes a number of these with different stroke lengths.
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You'll need a set of digital relays. I purchased this set of 5. Always nice to have a couples spares.
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And here are some jumpers you'll need to attach to the GPIO pins of the Pi...
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You'll need a project box to place the Pi and relays in. This one is slightly bigger than mine (6.5x4x2.5 inch) but would work just fine.
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