3.2 Servo making a grinding noise on reboot/M999
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@alankilian Hi! Thank you
Will tinker with this tomorrow - now I need to see which fan to substitute, as I am basically using all the fan's with PWM control.... -
avoid Fan1 since it powers on briefly at power up because it's intended for the heatsink fan in case the hotend was hot when power was cycled.
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@Phaedrux Any specific recommendation? Or alternatively I can use an external mosfet connected to the expansion port for that too?
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I'm not sure. This is uncharted territory for me.
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@Phaedrux hahah ok
No problem Thank you for the advice! -
As per DC42 comment, I have added a 5K resistor between the pin (exp.e3stop) and GND and my issue is solved - the voltage spike at startup/shutdown is minimized and the pin can be used to send signals to an Arduino during operation without hazard of stray signal being send from reboot.
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@vasparshin Hi. So you literally connected ground and the exp.e3stop with a 5k resistor? (ie. between ground and the exp.e3stop pin)? Mind sending a photo?
Tinus
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Yes that is correct. 5K resistor between ground and the exp.e3stop and taking the signal from exp.e3stop to Arduino. My wiring is a complete mess so I've provided a diagram instead.
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Brilliant thanx, got it like that. Working like a dream.
