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  1. 01-08-2019 #8
    Doddy's Avatar
    Lives in Preston, United Kingdom.
    Doddy
    Last Activity: 3 Weeks Ago 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.
    John, from last time I trawled the main board there are octal buffers driving each output to 5v logic levels. Each input is fed through a resistive voltage divided into the Microcontroller daughter card.

    The 3v3 reg only powers the micro controller, with the buffer logic driven from the off board 5V supply

    ... though it’s been a while since I looked
    Last edited by Doddy; 01-08-2019 at 12:50 PM.
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