First of all, I’m new on laser engraving tech but I have read a lot about it.
I’m wondering if someone uses a laser engraver from LubanDIY (chinese comany) with LaserWeb. The electronic (v4 in my case) is a shield for Arduino UNO Nano.
I had customized and to compile Grbl firmware for my machine.
I managed to use this electronic with LaserWeb but I get a problem with the PWM power control.
under (around) 70%, the laser is ON but does’t burn anything.
between 70 and 100%, it burns but without any variation.
I don’t know how to check the PWM control, any idea?
Well, I got probably a diode without a PWM capable driver. Where to find a good (and cheap) PWM capable driver in EU? DTR seem to be a good choice but I can’t find one in EU.
@Roberbike thanks for your reply, I’ll check this one (Russia is not in EU but…) +Peter van der Walt Of course, a good stuff is a best but I’ll try to open the Chinese one and see what is going on there.
TTL = Transistor-transistor-logic. It’s used in a system of digital logic ICs that uses +5V for “hi”, “1”, “true” or “yes” and 0V for “lo”, “0”, “false” or “no”.
TTL modulation means you can switch the device (laser) on & off by applying either 5V or 0V to an input pin (actually everything above 2.0V is “on”, everything below 0.8V is “off”, the range in between is “forbidden” and should only be applied for nanoseconds while going from one logic value to the other). This is opposed to “analog modulation” where the output intensity would be proportional to the voltage applied to the modulation pin.
