How about this? Despite proper assembly and testing, my A3 2500mW unit fails to work AT ALL. Banggood seems to rely on boilerplate email (non)responses, having requested and received videos FOUR times (twice claiming they couldn't open them) and pushing me off to this forum for answers, instead of sending replacement parts. Since I have had good luck with buying handtools and such like, I'm willing to give them the benefit of the doubt, but only so far. Now they want a screenshot that I've gone to the forum. Let's see what happens next...
@mostlydave I have had my laser for more than 3 months so I knew I wasn't going to get any free replacements, and I don't think anywhere sells the driver boards I need separately and commercially, but Eleksmaker has contacted me and are willing to arrange with the manufacturer to send me the board by itself at my cost ($10). I can't speak for anyone else, but I call that good service from Eleksmaker on their part
@EleksMaker ok, you see my laser board, and L7 board. what i need to do to get PWM? I'm not an engineer, i am a noob for this. i think: put 2 pin laser module to 12V in L7 board. or I'll break the laser?
Yes, it works, but unfortunately it behaves strangely. Some drawings will work well, but with some pen or laser moves only when pen must be up or laser off and when it must draw or cut, it only lays pen down or switch laser on and not moves at all.
And yes - as someone mentioned before - there is no possibility to change SVG drawing scale.