LED nozzle light?
-
Hi, I have a few 5V LED blades designed to fit into USB ports that I think are fabulous.
I would like to use one to illuminate the nozzle and surrounding area on my printer.
I am using a Duet 3 mini 5+ running with a 24 V supply.
How could I connect this, ideally being able to control it with gcode?
Any ideas would be very welcome, especially with with some coding suggestions. -
You could use a spare fan port if you have one available and wire it as a fan, using a buck converter to drop the voltage.
The example here is using 12v fans with 24v vin, but the buck converter could supply 5v all the same.
-
@Phaedrux , thanks for that.
-
@handyandy you can configure it directly, rather than tricking Duet into thinking it is a fan.
See my thread here, where I did exactly this to control some linear pull solenoids, and an LED ring light for a vision camera.
This way you'll be able to control your light using
M42 Pn S1 ; turn on your light M42 Pn S0 ; turn offWhere n is the number you assigned to your light, via the M codes in my thread linked above.
In my case, both the ring light and solenoid required 24V so I used OUT5 and OUT6, with the voltage select jumper set to VFUSED, as I too am supplying the board with 24V.
Alternatively you can configure the jumper to supply 12V on these pins, if you're within current limits.
Finally, I'd need to check the schematic to see if the outputs are just low side MOSFETS, in which case you likely can externally supply whatever voltage you need (within the drain-source breakdown limit of the FETs) and just use the ground side of the output pins, but take this last paragraph with a pinch of salt, as I've not done that check.
