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  1. #21
    Quote Originally Posted by magicniner View Post
    Not in the photo of your setup which you posted :D
    That's after I disconnected loads of wire :)

    Sent from my SM-G920F using Tapatalk

  2. #22
    Quote Originally Posted by CharlieRam View Post
    That's after I disconnected loads of wire :)

    Sent from my SM-G920F using Tapatalk
    Oh, well that helps and isn't pointless at all :D
    You think that's too expensive? You're not a Model Engineer are you? :D

  3. #23
    Quote Originally Posted by magicniner View Post
    Oh, well that helps and isn't pointless at all :D
    Yeah, in hindsight it wasn't the best image to show!

    Sent from my SM-G920F using Tapatalk

  4. #24
    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. 

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    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. 

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    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. 

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    john
    Last edited by john swift; 2 Weeks Ago at 05:34 PM.

  5. #25
    Wouldn't a relay board be easier?

    https://www.ebay.com/itm/1CH-2CH-4CH...H4U4QOng0awJrg
    Gerry
    ______________________________________________
    UCCNC 2017 Screenset

    Mach3 2010 Screenset

    JointCAM - CAM for Woodworking Joints

  6. #26
    Cheers guys, I really appreciate the help. I went ahead and used my mosfets and soldered it up in the sun yesterday...boy it was hot!!
    Anyway...its all sorted now although the red switches are very bright
    Cheers again...my machine will hopefully be finished this year!

    Sent from my SM-G920F using Tapatalk

  7. #27
    Gerry

    the relay board is a simple alternative to using transistors that some will prefer
    ( as always the best solution is the one that works for you )

    the relay board has the advantage the outputs can be wired to either have a common +24V or common 0V / ground connection


    Charlie

    great result

    do you have the option to use 28V bulbs in the switches ?

    under run 28V bulbs will last longer


    an alternative would be to add a resistor in series with the bulb
    if the bulb takes 40 mA a 100 ohm resistor would drop the voltage by 4 V

    john

  8. #28
    Quote Originally Posted by john swift View Post
    Gerry

    an alternative would be to add a resistor in series with the bulb
    if the bulb takes 40 mA a 100 ohm resistor would drop the voltage by 4 V

    john
    That was my thinking John, thanks.

    Charlie

    Sent from my SM-G920F using Tapatalk

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