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more info on thermocouple

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jbruce 2022-11-03 10:31:54 -04:00
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@ -38,7 +38,7 @@ Turns a Raspberry Pi into an inexpensive, web-enabled kiln controller.
| ------| -------- | ----------- |
| ![Image](https://github.com/jbruce12000/kiln-controller/blob/master/public/assets/images/rpi.png) | [Raspberry Pi](https://www.adafruit.com/category/105) | Virtually any Raspberry Pi will work since only a few GPIO pins are being used. |
| ![Image](https://github.com/jbruce12000/kiln-controller/blob/master/public/assets/images/max31855.png) | [Adafruit MAX31855](https://www.adafruit.com/product/269) or [Adafruit MAX31856](https://www.adafruit.com/product/3263) | Thermocouple breakout board |
| ![Image](https://github.com/jbruce12000/kiln-controller/blob/master/public/assets/images/k-type-thermocouple.png) | [K-Type Thermocouple](https://www.auberins.com/index.php?main_page=product_info&cPath=20_3&products_id=39) | Invest in a heavy duty, ceramic, k-type thermocouple designed for kilns |
| ![Image](https://github.com/jbruce12000/kiln-controller/blob/master/public/assets/images/k-type-thermocouple.png) | [Thermocouple](https://www.auberins.com/index.php?main_page=product_info&cPath=20_3&products_id=39) | Invest in a heavy duty, ceramic thermocouple designed for kilns. Make sure the type will work with your thermocouple board. Adafruit-MAX31855 works only with K-type. Adafruit-MAX31856 is flexible and works with many types, but folks usually pick S-type. |
| ![Image](https://github.com/jbruce12000/kiln-controller/blob/master/public/assets/images/breadboard.png) | Breadboard | breadboard, ribbon cable, connector for pi's gpio pins & connecting wires |
| ![Image](https://github.com/jbruce12000/kiln-controller/blob/master/public/assets/images/ssr.png) | Solid State Relay | Zero crossing, make sure it can handle the max current of your kiln. Even if the kiln is 220V you can buy a single [3 Phase SSR](https://www.auberins.com/index.php?main_page=product_info&cPath=2_30&products_id=331). It's like having 3 SSRs in one. Relays this big always require a heat sink. |
| ![Image](https://github.com/jbruce12000/kiln-controller/blob/master/public/assets/images/ks-1018.png) | Electric Kiln | There are many old electric kilns on the market that don't have digital controls. You can pick one up on the used market cheaply. This controller will work with 110V or 220V (pick a proper SSR). My kiln is a Skutt KS-1018. |