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phenotypic / homebridge-web-sprinklers

Homebridge plugin for a web-based sprinkler system
MIT License
14 stars 4 forks source link

What to buy #4

Closed themoddedcube closed 3 years ago

themoddedcube commented 3 years ago

Hi in my last post I was asking for help with integration, but in this post I need to know what to buy first, I have 8 zone sprinkles currently, so if I buy this board, https://www.amazon.com/HiLetgo-Internet-Development-Wireless-Micropython/dp/B010O1G1ES, and 2 packs of these relays, https://www.amazon.com/3V-Relay-Module-Optocoupler-Development/dp/B01M0E6SQM/ref=sr_1_1_sspa?dchild=1&keywords=8x+esp8266+relay&qid=1608826792&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFWTldITDNJSDYwOEQmZW5jcnlwdGVkSWQ9QTAyNDI4NzYzMkdXVjJVQ0VGMEg3JmVuY3J5cHRlZEFkSWQ9QTA1NTM5OTQ2MTFYWFQ3NDc2TVYmd2lkZ2V0TmFtZT1zcF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl, would I be fine or do I need to buy anything else?

themoddedcube commented 3 years ago

Sorry for formatting still a bit new to github!

phenotypic commented 3 years ago

Hi again, I'd advise against buying parts from Amazon due to the comparatively extortionate pricing when compared to AliExpress or similar sites.

The ESP8266 board you linked is indeed the one the script was designed for, and whilst the relays you linked should work fine, it's highly inefficient to use multiple individual relays for an application like this. Instead, use a multi channel relay board with the correct voltage specifications.

Other than that and a couple of dupont cables- assuming you have a standard AC sprinkler zone setup and you know what you're doing with the wiring- that's all you'll need for this project.

Take a look at these items on AliExpress: ESP8266 CP2102 and 3.3V 8 channel relay board. I can't vouch for these sellers though and you might find better prices shopping around, but hopefully that helps answer your question.