I’ve got an issue with an X5 and a laser PSU. This PSU uses IN for PWM (Not L and 5V like the stock K40) as well as ground. I have the INPUT connected to pin 2.4 on my X5 and Ground on the PSU connected to GND on my X5. Whenever the GND pin is connected the laser won’t fire manually or otherwise. When I remove the GND connection I can then fire the laser with the test button. Has anyone else encountered this? If so, what might I be doing wrong?
This is my PSU: http://www.lightobject.com/20W45W-PWM-CO2-Laser-Power-Supply-AC110V-P71.aspx
+Peter van der Walt It is connected. I have the laser on/off button connected to WP and Ground.
Ok, I just tried leaving the ground connected to the X5 and pulling the 2.4 pin connection, and it works. So the question is, why does having the board hooked up stop the laser from firing.
I switched to pin 2.5 (Hot end neg terminal) and now it fires manually just fine with everything connected, but it doesn’t fire when the job is running.
Did you change your config file?
@Alex_Krause I did. I can’t get the PWM to work using Light Object’s recommended IN and ground. I switched to this because in some emails with them they insist that I should not be using 5V for PWM. Just IN and ground.
@K1111 I’m off work tomorrow… pm me in the AM. I have to hit the hay to take the kids to school
This power supply might require 2 active pins to enable
@Alex_Krause That’s the dual pin thingie, right? It’s frustrating because the K40 way (5V, L, G) works, but they make it sound like I’m going to damage the PSU using it that way.
Light objects sells DSP controllers… and they are going to recommend you hook up your connections as if a smothieboard is a DSP… can you send them an email for a wiring diagram for a DSP to your psu? It may show something we are missing
@Alex_Krause I think I have something already that they sent me. I’ll PM it to you in the morning.
So, you need to use a free GPIO pin ( a pin that has nothing on it like pull-ups or pull-downs, which I don’t know which that would be on an azteeg ) that is also a PWM pin.
Then you connect that pin to GND on the PSU, and you connect GND from the Azteeg to the IN pin. Then you set that pin to be Open-Drain ( change 1.30 to 1.30o or 1.30o! for example ) and it should work.
I had that same setup a couple months ago. Give me a couple hours and I’ll get back to you with how I had it hooked up.
I didn’t have the open drain. I used the switch module and M3/M5 and the pwm pins.
@Joe_Spanier On the Smoothieboard pins output 3.3V so if you don’t use open-drain on the IN/PWM pin you won’t be getting full power on most power supply.
@Arthur_Wolf ,what pins would that be on a genuine Smoothieboard going to a PSU that has IN and L ? (Like the one in the http://smoothieware.org/blue-box-guide) I ask because on my K40, even with a level shifter, I can only get about 10mA max with the single pin setup going to L
something like P1.30 is good
Even with a Level shifter? @Arthur_Wolf This is where my electronics knowledge hurts me.
Nah a level shifter means you can use any pwm pin, but I recommend open-drain it’s simpler, and some level shifter chips can cause problems.
It is simpler. Do you know what Pin would work well on the x5GT? @Roy_Cortes
The pin Roy recommended was 1.23. It was the servo pin on his board.
For the record I was using the sparkfun level shifter.
Is piun 2.5 capable of being set to open drain? If it is then all I would need to do is just get rid of the level shifter and make a small config file change to 2.5o