hazelton
lasercut a solder paste stencil from 3mil kapton, the pattern was exported as a dxf using kicad-cli!
#kicad
Jan 13 at 2:47amWeb
Show threadhazeltonJan 13
welp, the solder paste is always too dry or too fluxy!
Show threadhazeltonJan 14
the 3x3 charlieplex pcb has been populated and hotplated at 170c for a few minutes, not perfect with some bridging on unused pins, but it's functional! #kicad
Show threadChipJan 14
@hazelton Those traces are lovely. Is that the melty tracks plug-in for KiCad?
Show threadJanaJan 13
@hazelton have it lightly chilled before applying!
Show threadhazeltonJan 15
the 3x3 led matrix circuit has been programmed! a 4-wire charlieplex can control 12 leds, but in this design i was keeping to a single-sided pcb and trying to limit the bom.
#blinkenlights
Show threadmazzooJan 13

@hazelton I am currently trying with a) glossy paper and b) maps

for a one-time use. those are 100um. wanted to try cutting wax paper, but didn't find 100um-ish one, just 40um, and that's too thin by just looking at it.

Show threadZ̈oéJan 13
@hazelton looks pretty good! What laser is this
Show threadChris PetrilliJan 14
@hazelton what kind of laser do you use for this?