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  1. 16-03-2020 #1
    Doddy's Avatar
    Lives in Preston, United Kingdom.
    Doddy
    Last Activity: 25-09-2025 Has been a member for 9-10 years. Has a total post count of 1,364. Received thanks 188 times, giving thanks to others 66 times. Referred 1 members to the community.
    I don't know. Buy one and report back.

    Personally I'd be buying 3 resistors but that's just me and my crazy ways.
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  2. The Following User Says Thank You to Doddy For This Useful Post:

    JeanB
  3. 18-03-2020 #2
    Kitwn's Avatar
    Lives in Don, Tasmania, Australia.
    Kitwn
    Last Activity: 22-07-2025 Has been a member for 7-8 years. Has a total post count of 984. Received thanks 118 times, giving thanks to others 52 times.
    Quote Originally Posted by Doddy View Post
    I don't know. Buy one and report back.

    Personally I'd be buying 3 resistors but that's just me and my crazy ways.
    Agree. It seems that the lack of pull-ups is the problem and, if it's outputs are open-collector, the opto-coupler will need the pull-ups anyway!
    An optimist says the glass is half full, a pessimist says the glass is half empty, an engineer says you're using the wrong sized glass.
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  4. 18-03-2020 #3
    JeanB's Avatar
    Lives in Laval, Canada.
    JeanB
    Last Activity: 10-03-2024 Has been a member for 4-5 years. Has a total post count of 10.
    Good Morning Kitwn,

    Thanks for your help.

    I was going to install the resistors (cheapest solution) and separate 5v power supply, since I have one lying around. However, it will be a while before I can do anything as we are restricted to our homes due to the Corona virus. So I will let you if and when I get those resistors.

    Thanks again.
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