3 proto types of my controller. V1 on the left and final version on the right. Can not be happier with the end result. My current set up is with the middle proto type. I was not happy with the ribbon cable position and the stepper output tracks which i enlarged. Just plug and play.
What microprocessor is your controller based on?
Looks like an arduino uno pining.
@Paul_de_Groot you have answered my question from over on our LPS discussion thread.
Your LPS is a green-green configuration.
It is not the same supply I am tracing, yours looks like it might be a discrete component version whereas my green-green is smd.
When you get a moment can you see if you have continuity between WP on the middle connector and L on the right (dc power) connector?
I assume your middle connector is H,L,WP,G,IN,5V and your right connector is 24V, Gnd, 5V, L.
@Paul_de_Groot BTW what did you end up using for the PWM control?
It is based on an atmel xplained mini basically a super Uno pb328pb with 4 timers to allow 16bits engraving…
@Maxime_Favre yes it is uno pin compatible!
@donkjr indeed my lps H,L, WPS, IN,5V on the middle connector and 24v, gnd,5v, laser in. Will check if WP in and L are connected thru on the pcb. I suspect so.
I love this!
@Timo_Birnschein you are welcome. I was looking at a plug and play solution for people who don’t have the skills to replace the nano m2 board or the gutts to chop wires.
@Paul_de_Groot I did a similar conversion on mine using an Arduino Nano and a custom driver board not more than 2 weeks ago! It’s running grbl and for the first time I have a tool chain that really works with the laser! My solution is plug 'n play as well. We need more of these solutions so that people don’t have such a hard time wiring everything up… It’s too easy to make mistakes and then … flames…
@Timo_Birnschein fabulous. How did you go with the engraving function?
@Paul_de_Groot I did two major things: First, there is a grbl floating around which was extended by Nick Williams for LaserInk which supports realtime planned S commands for the variable spindle speed. It was an older version so I ported all his changes into the current grbl Master 0.9j which runs perfectly fine on my Nano. Second, I wrote my own gCode sender which is currently with my Chinese Nano copy roughly half the speed of PicSender. So I reach about 2800mm/min at 0.1mm/pixel resolution. That way I can engrave with the K40 at a reasonable speed and have grbl running with it.
In addition - and I hope here comes the cool part - grbl v1.1, which just came out two days ago, supports laser engraving out of the box now! But I haven’t tested that yet because mine works nicely for the moment.
You can find all my stuff here: https://github.com/McNugget6750
https://github.com/McNugget6750
@Timo_Birnschein nice to see that! Will try the newest grbl as well. The github cheton gcode sender. It’s marvelous and very nice to work with. Especially i can home my machine and use a webcam to position my work pieces without misalignment. Ideal for engraving on objects like wallets. Never have a failing engraving anymore☺
Https:// http://github.com/cheton /cnc
http://github.com/
Very nice:-) how do I get one??
@Nick_Williams will build a few and if you like I can drop one in the mail for you so you can play with it and give me feedback😀Just pm your address
@Paul_de_Groot Hey just wanted to check I sent a PM to you yesterday but this was my first PM on Google+ so not sure I did it right please let me know if you didn’t get it.
Thanks
@Paul_de_Groot Hey Guys Paul hooked me up 
Not quite ready to go but soon.
