RRF2.05.1 - M206 commands not turning on any fans
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It's a fuzzy picture but I think I have a 1.03 rev board. Only the 1.04 has fan fuses, no?
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@badvision said in RRF2.05.1 - M206 commands not turning on any fans:
It's a fuzzy picture but I think I have a 1.03 rev board. Only the 1.04 has fan fuses, no?
my bad, missed you had an older board.
1.03 has a blade fuse
1.02 does not have a fuse.
revision is printed in the yellow circle, and the fuse may or may not be under the wiring in the red circle. looks like there could be a fuse, but hard to tell from picture.
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Assuming that it is a blown fuse, is it possible that a high PWM rate would have caused that? If so, what is a good value for the F parameter for 2-wire fans that does not result in high-pitch squeals? Low value (like the default F500) with a capacitor to smooth the output?
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@badvision said in RRF2.05.1 - M206 commands not turning on any fans:
Assuming that it is a blown fuse, is it possible that a high PWM rate would have caused that?
doubt it, them blade fuses are quite slow. just pull it out and look at it, you should see if its good or not.
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@badvision said in RRF2.05.1 - M206 commands not turning on any fans:
Assuming that it is a blown fuse, is it possible that a high PWM rate would have caused that? If so, what is a good value for the F parameter for 2-wire fans that does not result in high-pitch squeals? Low value (like the default F500) with a capacitor to smooth the output?
Low value, but do not use a capacitor to smooth the output.
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@dc42 Understood, but is there no other way to avoid the PWM carrier frequency from turning the fans (usually somewhat quiet at full) into screeching weasels at 50% speeds?
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suppose one option is buying fans that support speed control, or even adapting to use 4wire fans which all support it.
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Can confirm, the fuse is blown to hell. Thanks so much you guys! Very relieved that I don't have to replace the board. What a great design!!!
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@bearer good idea but rewriting my part fan would require too many wires. I already configured around a db25 connection for low-amp and motors and 6-pin mil-spec din for the high-amp stuff. Thanks for helping me know all my options.
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@dc42 -- Using F50 for the part fan it is throttling using a low PWM frequency and is doing just fine. Not sure why I missed the bleeding obvious. Thanks again!
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Old filament so I'm not surprised by the zits on the print but the cooling fan was definitely not an issue here. Woo! Thanks a million you guys!