Problems installing laser engraver
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Can anyone help me too get my laser ingraver 17 watt with a ttl + and ttl _ module get work correctly
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hello,
i have an creality cr 10 s 5 ,with a duet 2wifi board i am using the laterst firmware , the problem is that i ad a laser engraver 17 watt diode it includes a ttl + en ttl- to controle it, i ad the ttl cable too power fan connector on the duet wifi. but i cannot controle it with the fan controler too put it on and off. did i wired it good, and i will include the config.g file.
would be nice ive someone help me with thatconfig.g -
The fan outputs are not TTL-compatible. The recommended way to get a TTL-compatible output is to use a 74HCT02 chip to invert a spare heater output and gate it with +3.3V. This ensures that the laser is off when you start the system.
If you are not into soldering, then the Duet 2 Expansion Breakout Board (https://www.duet3d.com/DuetAddons/Expansion_Breakout) provides two TTL-compatible outputs. It's overkill for you because it also provides outputs for external stepper drivers.
Another possibility is to use a spare pin on the expansion connector. See https://duet3d.dozuki.com/Wiki/Using_servos_and_controlling_unused_IO_pins#Section_Duet_2_WiFi_and_Duet_2_Ethernet. If you do this, be very careful that you don't accidentally feed more than 3.3v into the pin. A disadvantage is that the laser will be on when the system powers up, until you use a M42 command to set the pin up; but depending on the laser controller, a 1K pulldown resistor may fix that.
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
Hi Dc42,
Thanks i got the laser working, the pull down resistor 1 K wil fix that do i need too put it on the ttl+ and the heaterpin.
can i start a chat with you ? -
@dc42
i am new here -
I'm sorry, I don't do chat support, if I did then everyone would want it and I would never get any firmware development done. Also, there are others on this forum with more experience of laser engravers than I have.
What is it that you now need help with?
