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Adding an extra NIDEC Fan
Hi All,
Having a bit of trouble configuring a new fan on my 400mm VCORE4 IDEX machine. I want to add a PWM fan to the enclosure wall so I can create negative pressure within the enclosure and vent the fumes out of the house. I did some math (may be incorrect) and want to try the NIDEC fan used for the parts fans as apparently, I only need to run it at 20% during printing to create negative pressure then run it at 100% for a few minutes after the print to completely vent the chamber. I don't know if this will work, not the subject of the post, but wanted to give background.
My question is; how can I add another 12V PWM fan to the printer? I seem to get a PWM signal when I plug in to the 12V power for the existing part fans, but I can't find another 12V source to plug in to on the board, and trying to wire it like in the RatOS guide by pulling 12V +ve from a fan plug and putting the negative wire into HE1 -ve only provides 10V and the fan won't turn on. Any suggestions to put me out of my misery?
Having a bit of trouble configuring a new fan on my 400mm VCORE4 IDEX machine. I want to add a PWM fan to the enclosure wall so I can create negative pressure within the enclosure and vent the fumes out of the house. I did some math (may be incorrect) and want to try the NIDEC fan used for the parts fans as apparently, I only need to run it at 20% during printing to create negative pressure then run it at 100% for a few minutes after the print to completely vent the chamber. I don't know if this will work, not the subject of the post, but wanted to give background.
My question is; how can I add another 12V PWM fan to the printer? I seem to get a PWM signal when I plug in to the 12V power for the existing part fans, but I can't find another 12V source to plug in to on the board, and trying to wire it like in the RatOS guide by pulling 12V +ve from a fan plug and putting the negative wire into HE1 -ve only provides 10V and the fan won't turn on. Any suggestions to put me out of my misery?
Solution
For those that may come here for the answer, this is the code that I used. I realized that I only needed one enable_pin as PA15 wasn't in use, only the Fan15+ pin for power.
[fan_generic enclosure_fan]
pin: PD14
enable_pin: PA3
cycle_time: 0.00004
hardware_pwm: False
[fan_generic enclosure_fan]
pin: PD14
enable_pin: PA3
cycle_time: 0.00004
hardware_pwm: False
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