2 layers190.9 × 48.3 mm

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eutectic6337/TNbadge
Data point: after soldering only the front components (5x smart LED, 2x resistor) on 5 boards, I had 1 board with no erroneous beeps in the continuity test.
69 parts3
KiCad boards from 2 GitHub repositories tagged “badgelif”, the most starred first; open any of them in PCBKit.

eutectic6337/TNbadge
Data point: after soldering only the front components (5x smart LED, 2x resistor) on 5 boards, I had 1 board with no erroneous beeps in the continuity test.

eutectic6337/SAO-display
A modular system for displaying Shitty Add-Ons on a wall, with their lights a-blinkin'.