This meanwell PSU has the function. See the lat page of this manual: http://download.lulzbot.com/retail_parts/Completed_Parts/24v_500w_PSU_KT-EL0063/RSP-500-spec.pdf
It works the opposite way of ATX power supplies: apply voltage to turn OFF the PSU.
thanks, when I mesaure across GND and Z PROBE IN I get constant 3.2v, when probe is not triggered and around 17v with a 10k resistor. without the endstop connected I also read 3.2 between GND and Z PROBE IN, is there something defective?
@colten said in FET wiring:
I've got a parts cooler and a hotend cooler that I would like to control with 3 wires. On a Ramps 1.4, I would connect both positive's together and use the negatives to control on/off with the ramps FET's. Is this possible with the Duet 1.04? Ive looked for a schematic but could not find one.
Yes, you can do the same on the Duet.
@thomas_rudloff said in Z endstop at high end should set Z position to maximum:
Z endstop at high end should set Z position to maximum and not to zero after homing.
It does if you have declared your Z endstop to be at the high end in your M574 command, unless you have overridden that using a G92 command in your homez.g or homeall.g file. https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCartesianPrinter#Section_Homing_Z_to_a_Z_max_endstop_switch
@daydreamn1134 said in is this a Hardware issue? Duet WiFi does not boot.:
after fiddling around a bit more I tried yet another USB cable. while plugging it in I noticed that the other LEDs flashed quickly. I very gently wiggled it just slightly and the all stay on as long as I don't breath. The board now is booted up and I was able to connect to the board and configure and am able to access the board over wifi..
Maybe I have a bad USB port on the board @dc42 ? What are your thoughts?
Yes it could be a bad USB port, either bad contacts inside the connector, or a bad solder joint between the back of the connector and the PCB. Those solder joints rarely cause trouble, and they can be inspected easily. Do they look OK?
@pkirill said in Fans running only when tool is inactive:
When I connect a second fan to the second always on and turn on the power, the fuse blows.
Do you have the red and black wires the right way round? If you do then that second fan is probably faulty. I am assuming that they are not very powerful fans such that the combined total load is well over 1A.
The nominal PWM frequency of the DueX fan outputs is 488Hz. Other choices would be possible with a firmware modification, but all outputs would be the same frequency. The possible frequencies are 7.81kHz divided by 2^N where N = 0 to 6.
quoted from a post by @DC42,:
@dc42 said in duetwifi breakout board and bltouch wiring:
The breakout board inverts the heater/servo signals to be the "right way up", just as on the DueX boards, so you won't need the I1 parameter on the M208 commands.
do i understand right, that: "The PWM heater output on the Duet acts on the negative side, to pull it low, rather than pulling it high" but with the aid of an breakout board it will be the other way (pull it high, rather than pulling it low)
So by this answer, The PWM question is answered in full, for witch i am thankfully.
@petera said in Extruder Motor Stoped and nolonger can be found?:
How do i tell what thermostat im using?
That can be tricky to find out if it isn't advertised for the printer itself. If it's a genuine E3D hotend, you'd have a semitek thermistor with known settings.
The best bet is to buy a new thermistor with known values.
What is your hotend?
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