u/4b686f61

▲ 15 r/WLED

WS2812 2020 matrix on an aluminum core PCB for better thermal performance

Has anyone ever tried this before?

16x22 matrix for 352 leds, fits nicely into the ali express specials waterproof clear enclosure. I opted to manually place the LEDs as I can get 1000 of them for less that $20 CAD.

Idle current around 100mA

Maximum possible current draw is 7A (25 watts) at 5V, full brightness

This is open source (will update post with github)

u/4b686f61 — 5 days ago

How did I do for this high current PCB?

What I have here is a high power latching relay module with it's ESP32 controller.

Sn99Ag0.3Cu0.7 with rosin core flux then wait a bit then leaded solder for the blobs. For the baseline, 10awg copper wire is soldered on top as to conduct the current. It's a 4 layer PCB with really thicc traces. I tried just using the leaded solder (no flux core) and it went everywhere.

The black PCBs in the background are being used to hold other PCBs for the solder stencil. The green one pictured is the latest and best version.

As for the flair, most of my designs are for SMT components...

u/4b686f61 — 6 days ago

dead

suffering builds character, enjoying life leaves one unprepared

edit: found it in ddg search

u/4b686f61 — 10 days ago