SpOn does not light up

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  • October 24, 2017 at 12:11 am #10656
    Mike D
    Member

    i have just received a tinyG
    on either m3 or m4 commands the led for SpOn does not light up.
    I’ve measured voltage of .07v when m3 or m4 are sent.
    I get 0V on Spin (as expected) after m5
    PWM appears to output 3V at 100% duty,
    Cool also appears to output 3V when enabled with m8

    Should I expect to see 3(ish)v on Spin and SpOn producing light when m3 or m4 commands issued?

    thx

    October 24, 2017 at 7:29 am #10657
    cmcgrath5035
    Moderator

    On a fresh tinyG (no parameters changed), You should see happen when sending G code:
    > M8 – turn Coolant LED on
    > M9 – turn Coolant LED off

    > M3 S10000 – turn SpOn LED on and PWM LED on
    > M5 – turn SpON LED and PWM LED off
    PWM probably won’t turn off.
    Send $p1pof = 0.0 to change the off state phase of PWM to 0.0
    Then reset tinyG with reset button (sometimes required for the $p1pof parameter to be re-read)
    Retry M3 S10000, then M5
    PWM LED now Turn on, Then off?

    SpOn(and Spin terminal) still stuck off on staying at 0.7V max?
    That sounds like a defective port output.
    Anything connected to the Spin port terminal?

    October 24, 2017 at 10:13 am #10658
    JuKu
    Member

    Some of the M commands are synchronized with moves (can’t remember which), so when testing, follow M with a move.

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