these LEDs are smol... that's my pinky there on the side.

Show thread

One down, and pretty damn bright too!

lessons learned: for pads this small you really want/need a stencil. The only other way is to put a glob of paste over all the pads and then carefully scratch away the excess to leave four more or less uniform blobs, but this is not very reliable.

Going to laser-cut some stencils tomorrow :)

Show thread

@s_ol Oooh, I see Kailh Choc footprints. :3 These PCBs are cute. :)

@Ludonaut
the fablab does 😉
The MCU is also QFN, would've never attempted this without a hot air station (and I might yet fail, at least a couple of times)

@s_ol qfn hmm. i guess with the right chisel tip, lots of flux and some skillfull drag soldering...

some day i'll buy that hakko and it's gonna be awesome haha

@Ludonaut
I think you might be thinking of QFP? The N in QFN standa for "No-Lead", they either have only very small or no contracts on the side at all and can only really be reflowed on...

@s_ol by the way those pcbs are very pretty, nice work on the silkscreen

@morgan
1.5x1.5mm, these are SK6805-EC15 (aka Adafruit Neopixel 1515), same protocol as WS2812B

@s_ol would you share a photo of the stencil? I'd like to see how it's used.

@whtrbt Sure, I'll keep updating with how it goes :)

@s_ol I really like seeing those mechanical switches PCB connectors 👀

@s_ol gorgeous though. Did you make them yourself ?

@morgan
I designed these yes, but they were produced by a big chinese PCB prototyping service

@s_ol Ooh, I like the color/texture on that PCB! Fancy!

Sign in to participate in the conversation
Merveilles

Merveilles is a community project aimed at the establishment of new ways of speaking, seeing and organizing information — A culture that seeks augmentation through the arts of engineering and design. A warm welcome to any like-minded people who feel these ideals resonate with them.