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  1. #1
    Neale's Avatar
    Lives in Plymouth, United Kingdom. Last Activity: 10 Hours Ago Has a total post count of 1,743. Received thanks 297 times, giving thanks to others 11 times.
    Quote Originally Posted by Chaz View Post
    Ok, got it to start, had to put in a timing value for PWM. It turns but my speed changes dont change the input voltage that is stuck on roughly 3V. Just wondering how my USB powered device 'creates' 10V if there is no external power supply.
    From what I have seen, quite a lot of BOBs need a separate external power supply for the analogue output, typically 12V. Some VFDs can provide this - all depends on the combination of kit you are using.

  2. #2
    Chaz's Avatar
    Lives in Ickenham, West London, United Kingdom. Last Activity: 3 Weeks Ago Has a total post count of 1,654. Received thanks 115 times, giving thanks to others 71 times.
    Quote Originally Posted by Neale View Post
    From what I have seen, quite a lot of BOBs need a separate external power supply for the analogue output, typically 12V. Some VFDs can provide this - all depends on the combination of kit you are using.
    Thanks. Managed to get it work, but not with the board itself. The Pokeys U board is limited to 3.3V PWM max. Confirmed by their support guys and online via a thread. So got a £4.99 RS485 USB adaptor which I got working last night. So no need for spindle control from the Pokeys. Not ideal but it works.

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