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  1. 29-06-2019 #24
    john swift's Avatar
    Lives in merseyside, United Kingdom.
    john swift
    Last Activity: 18-01-2021 Has been a member for 9-10 years. Has a total post count of 257. Received thanks 53 times, giving thanks to others 0 times.
    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
    Click image for larger version.  Name: 61ia6eri1ZL._SL1000_.jpg  Views: 386  Size: 126.2 KB  ID: 25994

    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


    Click image for larger version.  Name: 4ch opto-isolated switch.jpg  Views: 399  Size: 138.1 KB  ID: 25995


    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

    Click image for larger version.  Name: 412_ARDUINO_MODULE_4CH_MOSFET_SWITCH.pdf  Views: 139  Size: 1.93 MB  ID: 25996


    john
    Last edited by john swift; 29-06-2019 at 06:34 PM.
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