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Temp sensor LED lights when moving the head!


achillx

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Posted · Temp sensor LED lights when moving the head!

Hi,

I don't know if here is the correct place to post this thing because I don't know if it is a problem.

With NO cables attached to the printer (power and USB), if I move the print head with my hand the temp sensor's LED lights up!

Is this normal?

:???:

Electricity generator?!

 

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    Posted · Temp sensor LED lights when moving the head!

    The stepper motors act as little generators when you spin them, so yes, it's normal.

     

    Ok although I don't get why the electricity that is produced from the motor goes through the temperature sensor's circuit.

    Beside sharing a common - I don't understand how is a closed circuit motor and temperature sensor.

     

    But only in one direction for each axis... ;)

     

    I does it on both directions, both axes!

     

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    Posted · Temp sensor LED lights when moving the head!

    [...]

    I does it on both directions, both axes!

     

    That's interesting. On my UM1 I only get the effect in one direction. And it made sense to me as LED are diodes. :blink:

    I try to avoid moving the print head fast (which results in higher induced current) as the electronics might not like this kind of induced power. :sad:

     

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