From 6c554c5e9af8a3b284c97e02b5fc7158f35a7407 Mon Sep 17 00:00:00 2001 From: jbruce12000 Date: Tue, 8 Jan 2019 20:39:49 -0500 Subject: [PATCH] - added comment about 3 phase ssr --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index d0d274b..04926b6 100644 --- a/README.md +++ b/README.md @@ -32,7 +32,7 @@ Turns a Raspberry Pi into an inexpensive, web-enabled kiln controller. | ![Image](https://github.com/jbruce12000/kiln-controller/blob/master/public/assets/images/max31855.png) | [MAX 31855](https://www.adafruit.com/product/269) | 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/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. You only need one SSR, even if the kiln is 220V. Relays this big always require a heat sink. | +| ![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. | ### Schematic