ESP8266 Community Forum

- Sun Sep 20, 2015 3:29 am #29486 Hi All,
FIRST POST!!! Hi all,

I want to make a 4 channel esp8266 relay controller for my Jacuzzi (hot tub/spa). 3 relays for motors and 1 for motor + heater.

Needs to be able to flip 30amp @ 240v. There are not many boards out there that can do this but I did find one called TSRW430 (made by Tinysine).

http://www.tinyosshop.com/index.php?rou ... uct_id=714

At $80 its not bad ... but as it does not use the esp8266 it I still think I could make it for half that price.

Is there a reference schematic that I could copy? Did I mention I am a TOTAL noob??? I wouldn't know my amps from volts and will probably blow myself up.

But still - I want to control this thing via wifi so I need your help. I would appreciate any help !

- Mon Sep 21, 2015 4:49 am #29564 I would buy a generic wired relay board, and use a ESP to drive it. Browsing eBay, 4-way relay boards capable of driving 30A loads seem hard to find, but 2-way or 1-way boards seem cheap and easy to find. Then, driving those boars from a ESP seems quite doable, there are lots of tutorials on the internet about driving relay boards from Arduino or ESP modules.

- Mon Sep 21, 2015 12:03 pm #29593

I would buy a generic wired relay board, and use a ESP to drive it. Browsing eBay, 4-way relay boards capable of driving 30A loads seem hard to find, but 2-way or 1-way boards seem cheap and easy to find. Then, driving those boars from a ESP seems quite doable, there are lots of tutorials on the internet about driving relay boards from Arduino or ESP modules.

Hi,

Why don't you use one of these 4 way opto isolated relay boards to switch the bigger relays?

http://www.ebay.co.uk/itm/UK-5V-4-Chann ... 35e99d9e86

These boards do work with an ESP, I have used them for various projects.

Maybe an option for you, you will not find otherwise a board designed that is compatible with an ESP with relays of 30 Amps otherwise.

Hope this helps.

- Thu Sep 24, 2015 12:23 am #29749 30A @ 240V? That seems to be a lot of power for a Jacuzzi...
What I would do is look for solid state relays on eBay.. You just need to mount them on a heatsink. Just use the ESP8266 to drive a transistor, which drives the SSR...
But again, are you sure it is 30A?