no havent made a lens setup yet. got a 5mw module that's adjustable in the mail today. currently contemplating using that setup for focussing instead of making my own colemating lens with the lenses from a dvd drive and a 3d printer.
what do you mean pwming the diode itself and not the input to the driver?
the whole point of the driver was to protect the laser from the pwm as far as i know.
those are the results i get from a circuit simulator (because my multimeter is broken) results from me specifying probe points when...
ok so i made the circuit in here https://www.circuitlab.com/editor/#
(i am not premium so i can't save them and share them.)
but the driver is working as intended. i just did not know it would drop from 12v on the outputs without a load. to 3.6v on the output with a load.
it is heatsinked. the heatsink attached to it is an old graphics chip heatsink. it's atleast 2 or 3 times as big as a regular heatsink designed for an lm317. that's all fine.
i just need this thing to last atleast a day or 2. just for shits and giggles of having something i built myself...
the lm317 in this setup is a constant current circuit. not a constant voltage circuit.
or atleast it's supposed to be. i added the capacitors later to get rid of spikes of any kind. and i have not measured the voltage on there.
but this diode is being driven by 12v. (i assume the...
well initially it's just an on off system. burn amount could be done with movement speed.
but apparantly. my homemade driver allows me to digitally adjust the laser brightness.
i am powering the driver with a 12v fan output on a 3d printer board.
2 wires with a pwm signal. (0-255)
if i turn...
-well i'm sorry about the double posting. it's something i am not aware off.
i don't go on forums alot. but i guess by now that is pretty obvious.
i'll learn though.
-i had a question in 2013 and made an account..
i got or found the help i needed. and that's that.
it's only now. this...
it's not that it wasn't pretty. but i don't know anything in this world. no person. no company.
so if someone gives me a link that's not ebay or amazon or something. i am immediatly on guard.
if it then at first glance looks like the standard scam websites. you guys know what i am...
hey guys. quik question here.
i am building a laser engraver and it's basicly my first time playing around with home made lasers.
and i have a question
i made my own laser driver. and when i adjust the current i see a weird effect and i don't know what it means.
also i think i may...
i do know what i am looking for now. and i have given up on local suppliers. i guess there are non. so either alieexpress. amazon or ebay.
and then a (do i even need glass? for less then 500mw) focussable lens, housing for a 5.6mm diode.
i am currently just searching for that. and i am...
to clarify why 15 dollars is such a big deal in this case. (because 15 dollars isn't much i agree.) but the whole machine that i am building atm has not cost me more then 10 bucks.) so 15 dollars for just a laser housing is a pretty bad investment
i had old dvd drives. i already have...
yeah no thanks. everything about that website smells like a scam.
the cheap layout.
the change in background from the homepage to one of the product pages. (makes it seem like a completely new site)
but most of all. if you ad something to cart you immediatly end up on paypal. with...
i guess here in the netherlands i am just out of luck. i can choose from a 5mw laser. like this https://www.kiwi-electronics.nl/laser-diode-5mw-650nm-red?search=laser&description=true&sort=p.price&order=ASC
from inside the netherlands with 1 day shipping.
i cannot find any lose laser...
something like an aixiz module.
that i can press one of these into
like this https://www.amazon.com/AixiZ-30mm-laser-module-blanks/dp/B004LZHA0I
that i can press the diode in for heatsinking. and that i can screw a lens into.
i did just find this though...
and if i am going to buy that 500mw red laser
i could also just use my 1w blue laser module. (not enoegh heatsink though) it's from the O-like laser pointer though. the waterproof one of 50 bucks. so i don't want to sacrifice that.
they gave me no duty cycle. if i have enoegh heatsink...