Re: Proper gcode fan driver (schematic)
You could always put up a kick starter 
I too would be interested in one of these as a complete unit for future addon to my new SD3.
Re: Proper gcode fan driver (schematic)
IanJohnson wrote:
I think what would get a lot of interest here is if you offered not just the boards, but a plug and play add-on for those who are intimidated by the thought of soldering anything (though they would still need to solder headers). I think a lot of people would like to order something that is ready to plug into the board at one end, and plug into a fan at the other. Maybe include the headers and a 40mm fan for a complete kit.
++1
SD2 w/ mods: Rumba controller, ATX PSU, SD pro case, glass bed, with more to come...
28 2013-04-07 08:47:43 (edited by adrian 2013-04-07 08:48:22)
Re: Proper gcode fan driver (schematic)
Call me an idiot - but I'm not following where "AC" enters into any of this when using fans designed for PCs? The fan is driven from 12V DC, so why isn't it simply a matter of using a protected N-Channel MOSFET (which is really only protecting the MOSFET) and a freewheeling shottcky across the fan and a resistor to protect current to the Gate, and a resistor to ground to make sure its fully off when desired?
Or alternatively.. isn't it just easier to use a 4-wire PC fan and just drive the PWM directly to the (usually) blue wire? Problem solved ??
Re: Proper gcode fan driver (schematic)
Still keen to hear where the AC comes into any of this... You still around Bahstrike ?
Re: Proper gcode fan driver (schematic)
Can you drive a PWM fan with the signal wire from our driver board?