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Great, since I was busy to build my inverter board you all brought up additional solutions, where at least some would have made my life easier ;-) First... thanks romain for the input. I thought also on soldering directly on the ESP output, but the complete build is quite fancy I didn't want to tamp...

Thanks for the "flowers" but to be truthfull, without mstrens I would still be juggling questionsmarks... Anyhow I will be happy to provide all necessary data and infos, when I'm finished and have it working. As far as I know romain is also working on this topic and plans to provide a tuto...

Hi, now it's getting serious... ;) Laser arrived last week, but I haven't had the time for testing since today. But it's seems to be pretty straight forward. I tested everything not directly on the RS control board yet. Rather I build a small test setup with an arduino nano and an ULN2803 to simulat...

Thanks a lot for the help. I will follow up with the testing when the laser arrives here. Since it's coming from china I assume that I will take a couple of weeks still. I will post again as soon it arrives and I got a chance to do the testing.

Hi, I built a small test circuit [https://images.app.goo.gl/91A5RPkLaMPDQZya9] (with LED for a consumer) and it works as you mentioned but there are two things I'm not sure how to handle them... 1. - the pwm signal seems to be invertet, so 100% duty cycle LED off and 0% duty cycle LED on 2. - the vo...

After some strugles and flashing another bluepill with the grbl s/w it seems I have a working PWM signal output which reacts as expected to "M3 Sxxx" inputs with a changing duty cycle PWM signal but only some mV as an output voltage. Don't know if it will sufficient for the laser driver wh...

I'm also investigating in this direction. Therefor I looked into the electronics to check the Spindle PWM output of the board but I cannot measure any difference when I turn it on via "M3 S1000" command. I checked in the grbl firmware which can be downloaded here for the custom way and the...

switched spindle power supply continous on 230 V AC... In the last couple of weeks I have build the RS-CNC and I'm nearly finished. Since now everything works as expected and I will start testing real work (since now I had only a pencil mounted :lol: ) as soon as the tools for the router arrive. The...