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LED8 on Arduino blinking red?


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Posted · LED8 on Arduino blinking red?

Does anyone know if I should be worried when LED8 on the Arduino board is blinking red when printing?

 

I just happened to notice this and I'm not sure if something is wrong or not. Usually red flashing lights are no good... The printer seems to printing alright though.

Should I be worried, or did it always blink when heating, and I just never noticed before?

IMG_20130609_182109.jpg

 

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    Posted · LED8 on Arduino blinking red?

    Without checking the schematic I'm 99.99% sure that LED is just connected to the mosfet that runs the heater. So, whenever the heater turns on the LED lights up.

     

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    Posted · LED8 on Arduino blinking red?

    I'm 100% sure that the LED lits up when the heater is on. When the temperature is reached the LED cycles about 8 times per second, which is normal and nothing to worry about.

     

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