Opto isolator question

[magicniner]

Not in the photo of your setup which you posted in your first post :D

[CharlieRam]

Not in the photo of your setup which you posted :D

That's after I disconnected loads of wire :)

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[magicniner]

That's after I disconnected loads of wire :)

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Oh, well that helps and isn't pointless at all :D

[CharlieRam]

Oh, well that helps and isn't pointless at all :D

Yeah, in hindsight it wasn't the best image to show!

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[john swift]

I have had a quick look at the various arduino boards available

this looks like a ready made you can use (amazon are out of stock but it appears to on sale from ebay )
https://www.amazon.co.uk/d/Wall-Sock...ino/B01MRQFYJN

hi res readable picture from amazon advert


the small 16 pin IC is a quad opto isolator - part number PS2801-4



another possible board

https://ja.aliexpress.com/item/32748...3-954e0244d34d





I was going to say the problem with all of the chinese boards is the lack of information but
I have found this
http://www.ekt2.com/pdf/412_ARDUINO_...FET_SWITCH.pdf




john

[Ger21]

Wouldn't a relay board be easier?

https://www.ebay.com/itm/1CH-2CH-4CH...H4U4QOng0awJrg