I’ve ordered, not so long ago, 15W laser module to replace my broken 5,5W one (5,5W laser was beeing replaced from factory). I was hoping to get much more power and be able to cut more… sadly it’s not that simple. It does not “engrave” on metal, does not cut deeper – so where is the problem? I’ll try to find out! 🙂
It seems like this 15W is only on paper, for marketing purpose. It’s called “impulse”, and we should be able to get peak power of impulse around 15W. Continuous power is 8W. I’ve ordered also module with fixed focus, not adjustable, since this type should offer better power transfer.
Browsing over different offers on Aliexpress, we can find some different specs. It should be powered with 12V DC (that is always the same), and peak power consumption should be 4-5A. Some other sellers claims it should drawn I <3A. All this can be true, probably some of them give current for power supply (12V) and other for laser module itself (it should be powered with constant current – but we can assume peak voltage somewhere near 5V). So 5V times 3A – yup, its 15W 🙂
Not so long ago I’ve managed to corrupt my bootloader in woodpecker board by silly mistake. I’ve downloaded binary firmware (to back it up) with chosen ATmega2560 instead of ATmega328P – since it has more memory, dump was too big to fit later in 328p and when I wanted to restore it, I’ve overwritten bootloader. Interesting thing – firmware was still working ok. Anyway since I anyway wanted to upload newer bootloader no harm done. Just needed to find proper way to connect to the board.