Hi folks,
The Azteeg X3 has what I read are "lower power switched mosfet outputs", four of them, marked D4, D5, D6 & D11 (length ways) and 12v, sw, 5v (inwards), on the board. See photo curtsey of Panucatt.com (the red arrow is mine :) ) Wiring Diagram here.
Image may be NSFW.
Clik here to view.
I have already connected two low powered 12v fans utilising D4 and D5 positions, by connecting the fan (-) wire to the SW Pin (middle pin). The fans get their 12v feed piggybacking on the 12v line to the hot-end. This all seems to works very well (Mendel 90 self-build printer by the way.).
I want to power and control a much larger fan now! This is to cool the finished prints, and would be switched on by some End Gcode. The fan I want to use is 12v 0.58A.
I think this fan would draw too much power through the "low powered switched output" so I would like use a direct 12v supply from the PSU, and just switch the fan on/off from the board. I read I should utilise an external mosfet arrangement and have built myself a little "cooling fan mosfet driver"...as found on Thingiverse.
Image may be NSFW.
Clik here to view.
I've tested my little board (photo above), separate to everything, 12v to Red, GND Black, give the Green Signal wire 6v and the fan comes on.
My question is how might I connect this up so the Azteeg board drives the big fan via this mosfet board?
If I connect the Signal wire (Green) to the SW Pin on the Azteeg board, and connect the Black (-) and Red (+) wires to leads from the PSU then nothing will happen.
Should I supply 12v directly from the PSU to the Red (+) wire on my external Mosfet board, and connect the Black (-) to the Azteeg SW Pin (D6), and the Green wire to the Azteeg 5v Pin (D6)? This will switch the fan on I think, but I'm concerned that this would run higher current back through the Azteeg board, which is what I'm trying to avoid.
Any advice or clarification welcome. (Excuse my poor understanding of the electrical/electronics dimension.)
tks,
Ivor
The Azteeg X3 has what I read are "lower power switched mosfet outputs", four of them, marked D4, D5, D6 & D11 (length ways) and 12v, sw, 5v (inwards), on the board. See photo curtsey of Panucatt.com (the red arrow is mine :) ) Wiring Diagram here.
Image may be NSFW.
Clik here to view.
I have already connected two low powered 12v fans utilising D4 and D5 positions, by connecting the fan (-) wire to the SW Pin (middle pin). The fans get their 12v feed piggybacking on the 12v line to the hot-end. This all seems to works very well (Mendel 90 self-build printer by the way.).
I want to power and control a much larger fan now! This is to cool the finished prints, and would be switched on by some End Gcode. The fan I want to use is 12v 0.58A.
I think this fan would draw too much power through the "low powered switched output" so I would like use a direct 12v supply from the PSU, and just switch the fan on/off from the board. I read I should utilise an external mosfet arrangement and have built myself a little "cooling fan mosfet driver"...as found on Thingiverse.
Image may be NSFW.
Clik here to view.
I've tested my little board (photo above), separate to everything, 12v to Red, GND Black, give the Green Signal wire 6v and the fan comes on.
My question is how might I connect this up so the Azteeg board drives the big fan via this mosfet board?
If I connect the Signal wire (Green) to the SW Pin on the Azteeg board, and connect the Black (-) and Red (+) wires to leads from the PSU then nothing will happen.
Should I supply 12v directly from the PSU to the Red (+) wire on my external Mosfet board, and connect the Black (-) to the Azteeg SW Pin (D6), and the Green wire to the Azteeg 5v Pin (D6)? This will switch the fan on I think, but I'm concerned that this would run higher current back through the Azteeg board, which is what I'm trying to avoid.
Any advice or clarification welcome. (Excuse my poor understanding of the electrical/electronics dimension.)
tks,
Ivor
