Page 1 of 1

Request for dc42...

Posted: Thu Apr 28, 2016 9:57 am
by geneb
Could you add the ability to specify a speed parameter when you're specifying a thermostatic temperature with the T parameter on the M106 g-code? I've noticed that the PEEK fan can push so much air that the hot end can struggle to reach & maintain temperature. It would be nice to be able to dial down the fan speed. :)

tnx!

g.

Re: Request for dc42...

Posted: Thu Apr 28, 2016 10:17 am
by bob64
One solution might be to stick a resistor inline... or even a speed controller like this http://www.amazon.com/DROK-Controller-E ... B00CGXJSNY

Since Chances are the "always on" fan output is probably tied directly to the duet power input. Unless you actually meant Layer fan as opposed to peek fan?

Re: Request for dc42...

Posted: Thu Apr 28, 2016 2:02 pm
by geneb
The firmware the Duet uses can activate a specific fan when a temperature threshold is reached. This is done via the M106 code. (This feature is hard-coded in the SeeMeCNC fork of Repetier Firmware.)

You can read about how M106 works here: http://reprap.org/wiki/G-code#M106:_Fan_On - look at the "H" and "T" parameters.

[diatribe removed - boy am I in a grumpy mood today! :D ]

g.

Re: Request for dc42...

Posted: Thu Apr 28, 2016 7:09 pm
by dc42
geneb wrote:Could you add the ability to specify a speed parameter when you're specifying a thermostatic temperature with the T parameter on the M106 g-code? I've noticed that the PEEK fan can push so much air that the hot end can struggle to reach & maintain temperature. It would be nice to be able to dial down the fan speed. :)

tnx!

g.
I have added that to the wish list of future firmware improvements.

Re: Request for dc42...

Posted: Fri Apr 29, 2016 4:27 am
by Eaglezsoar
geneb wrote:The firmware the Duet uses can activate a specific fan when a temperature threshold is reached. This is done via the M106 code. (This feature is hard-coded in the SeeMeCNC fork of Repetier Firmware.)

You can read about how M106 works here: http://reprap.org/wiki/G-code#M106:_Fan_On - look at the "H" and "T" parameters.

[diatribe removed - boy am I in a grumpy mood today! :D ]

g.
I thought diatribe was when they killed off a whole bunch of Indians?

Re: Request for dc42...

Posted: Fri Apr 29, 2016 8:31 am
by geneb
dc42 wrote:
geneb wrote:Could you add the ability to specify a speed parameter when you're specifying a thermostatic temperature with the T parameter on the M106 g-code? I've noticed that the PEEK fan can push so much air that the hot end can struggle to reach & maintain temperature. It would be nice to be able to dial down the fan speed. :)

tnx!

g.
I have added that to the wish list of future firmware improvements.
Thanks!

g.

Re: Request for dc42...

Posted: Fri Apr 29, 2016 8:32 am
by geneb
Eaglezsoar wrote:
geneb wrote:The firmware the Duet uses can activate a specific fan when a temperature threshold is reached. This is done via the M106 code. (This feature is hard-coded in the SeeMeCNC fork of Repetier Firmware.)

You can read about how M106 works here: http://reprap.org/wiki/G-code#M106:_Fan_On - look at the "H" and "T" parameters.

[diatribe removed - boy am I in a grumpy mood today! :D ]

g.
I thought diatribe was when they killed off a whole bunch of Indians?
Bad Eagle! Bad! *whacks Eaglezsoar on the nose with a rolled up newspaper*

:D

g.

Re: Request for dc42...

Posted: Thu Jul 07, 2016 3:51 am
by bob64
Question: Do you have the always-on fans set to turn on at a specific temp or are you using the pwm fan pins?

Re: Request for dc42...

Posted: Thu Jul 07, 2016 9:33 am
by geneb
The "always-on" fans are just that - always on. There's no method (that I'm aware of) to control them.

g.

Re: Request for dc42...

Posted: Fri Jul 08, 2016 2:35 am
by dc42
For anyone who hasn't been following recent firmware released, this feature has been implemented and working since release 1.13b. I have set a minimum PWM of 50% for fans in thermostatic mode.

Re: Request for dc42...

Posted: Fri Jul 08, 2016 8:28 am
by Nylocke
How do you configure it? just with the M106 command?

Re: Request for dc42...

Posted: Fri Jul 08, 2016 8:31 am
by geneb
dc42 wrote:For anyone who hasn't been following recent firmware released, this feature has been implemented and working since release 1.13b. I have set a minimum PWM of 50% for fans in thermostatic mode.
THANK YOU!

Nylocke, try adding the T parameter and see how it goes.

g.