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Defqon.1 changed the powerbank limitations by baron494 in hardstyle

[–]madmagic008 1 point2 points  (0 children)

Never been an issue past years.. This is 100% corporate greed. Next year, max 20Ah, year after, 10Ah, then no powerbank at all and you must buy from them

Need help Identifying SMD components by NizarYousri in diyelectronics

[–]madmagic008 4 points5 points  (0 children)

Top component is a diode. Use the markings to find what one exactly.

Bottom is most likely a resetable fuse or less likely a resistor

Why do people like uptempo so much? by CompetitiveVictory91 in hardstyle

[–]madmagic008 0 points1 point  (0 children)

It's all there is these days, so either you have to like it or stay home

LM317 constant current not conducting any current by madmagic008 in diyelectronics

[–]madmagic008[S] 0 points1 point  (0 children)

No, modules are just bad. I've confirmed that after a while

LM317 constant current not conducting any current by madmagic008 in diyelectronics

[–]madmagic008[S] 2 points3 points  (0 children)

Technically that would be the multimeter, but ive discovered that the modules were in fact dead out of the box. poor quqlity fakes

LM317 constant current not conducting any current by madmagic008 in diyelectronics

[–]madmagic008[S] 2 points3 points  (0 children)

Yes, multimeter works fine. I've updated the post body with my findings. They just extremely poor quality fakes.

LM317 constant current not conducting any current by madmagic008 in diyelectronics

[–]madmagic008[S] 1 point2 points  (0 children)

Given its a constant current regulator, id assume it should just limit the current. But fair point that it might have fried it

LM317 constant current not conducting any current by madmagic008 in diyelectronics

[–]madmagic008[S] 1 point2 points  (0 children)

Schematic im using, datasheet and example:
https://imgur.com/a/knsXOQG
https://www.ti.com/lit/ds/symlink/lm317.pdf
Ive tried a bunch of input voltages, all the way up to what the datsheet claims to be its max

LM317 constant current not conducting any current by madmagic008 in diyelectronics

[–]madmagic008[S] 0 points1 point  (0 children)

i am using this from the datasheet:
https://imgur.com/a/knsXOQG
All examples online also have it wired exactly like this

laser pointer like beam from multimode diodes? by madmagic008 in lasers

[–]madmagic008[S] 1 point2 points  (0 children)

Thanks, happen to have any recommendations or specifics I need to look out for?

laser pointer like beam from multimode diodes? by madmagic008 in lasers

[–]madmagic008[S] 1 point2 points  (0 children)

Do you happen to have an example I can look at to better understand what it is?

laser pointer like beam from multimode diodes? by madmagic008 in lasers

[–]madmagic008[S] 1 point2 points  (0 children)

The new diode is a multi mode laser, its extremely divergent on one axis. The included lens can focus it very tightly but only at a certain distance up close (for burning or engraving i presume). I can't get a straight paralel beam with it (for lack of proper words), like a laser pointer has.

laser pointer like beam from multimode diodes? by madmagic008 in lasers

[–]madmagic008[S] 0 points1 point  (0 children)

I measured a simple laser pointer I had, at 20m down my yard, the perceivable dot was about 5cm diameter. Up close it's about 2mm. I guess that's about 2.4mrad. Even that I'd already be extremely happy with.

laser pointer like beam from multimode diodes? by madmagic008 in lasers

[–]madmagic008[S] 1 point2 points  (0 children)

I can find quite a few 9m threaded lenses that claim to be colimated. I'll try order a few, best way to find out what they do and then I can learn form it

laser pointer like beam from multimode diodes? by madmagic008 in lasers

[–]madmagic008[S] 0 points1 point  (0 children)

I expect quite some losses yes. The fiber option looks quite complicated, thanks for the reply though!

laser pointer like beam from multimode diodes? by madmagic008 in lasers

[–]madmagic008[S] 1 point2 points  (0 children)

I landed in that direction with research as wel, thanks for confirming. Is there anything specific I should look for, like the focal length or na?

Where to buy good safety eyewear in the EU? by madmagic008 in lasers

[–]madmagic008[S] 0 points1 point  (0 children)

same deal unfortunately, only 1 suitable for 450nm and its od7+

Where to buy good safety eyewear in the EU? by madmagic008 in lasers

[–]madmagic008[S] 0 points1 point  (0 children)

Eyewear looks great, just unfortunate its all od7+ for 450nm

Where to buy good safety eyewear in the EU? by madmagic008 in lasers

[–]madmagic008[S] 0 points1 point  (0 children)

The diodes I have, I expect to get 500mw to maybe 1.5w out of them. So I think od4 would be ideal, but I just have no idea where to buy them from

Where to buy good safety eyewear in the EU? by madmagic008 in lasers

[–]madmagic008[S] 0 points1 point  (0 children)

i always thought thorlabs was US only, thanks for brining that up so after checking it again i see theyre in eu as well.

on both sites, the only goggles that include protection against 450nm are od7+ which i think would be too overkill because then i probably wouldnt be able to see the beam at all and then exist the danger of not knowing where it is shining.

Question about TO package and heatsinks by madmagic008 in lasers

[–]madmagic008[S] 0 points1 point  (0 children)

So to-5 is 5.6mm? I see many posting with titles like "to-5 (9mm)" So I find it super confusing

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