i’m not talking about getting led strips or cobs and making your own fixtures, i’m talking about getting the leds and soldering them together to make the strips. i got started reading this thread and then looked at prices for leds. i found some for $0.13 each but that was for 100, about half of what you need for a decent light, so i ordered them along with some others to make up the spectrum i thought i needed.
as you can see, i accidentally ordered 100 of the wrong kind, since the blue (left) almost matches a significant portion of the white (center). the red (right) helps make up the spectrum, minus some green. i recall reading that plants that are green reflect green light and don’t use it so i decided to save my efforts and money on wasting light.
the bad thing i did was not finding all of them from the same manufacturer. now i have 100 that are different. not that much in size since they are all so small i can’t see them without my glasses anyway, but in voltage requirements, which is a pretty big thing. that problem actually solved itself when i figured out how to solder them up.
it’s really hard to tell in the picture but there is a solder pad missing on this one. let the heat stay for a half a second too long and it’s fried. the only way to solder these is as a group. and do not try to adjust one, it’s a one shot deal. miss one and you have a three stack now. and there is no way to leave them lying around, you need to make some sort of a jig. and you need to fabricate some sort of holder for them. i have a 3d printer sitting right next to where i’m working but have been a carpenter for 15 years so guess what i used for the jig.
some of the worst soldering of my life, almost the smallest but 30 years ago when i learned how to solder circuit boards i could see small things. anyway, nothing a little liquid tape won’t hide.
now to mount them on a board and test to see which configuration works best. i assume flat will but plan on testing with convex and concave as well.
that’s all i’ve done so far. gotta ask a few questions before blowing anymore up.
lessons learned so far:
- this is parallel, not series so do not hook them up to 12v. scratch 4.
- you don’t have a second shot at moving one or re-soldering. scratch 2
- they are tiny. hard as hell to solder without heating up too much. scratch 5.
- they only cost 13 cents each and you have 100 of them. but you need all of them and they cost more when you order less.
- no way i am ever doing this again but i am glad i did it once.
i will add more as i complete more. i can’t wait to see the final product.
oh, and the reason for the title anti tutorial is that there is no way i would ever recommend someone do this.