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Object details

Category
Pins & badges
Material
PCB, ESP32-S3, OLED, LED matrix
Year
2026
Design
Custom PCB, open-source firmware, etched silkscreen art
Colour
Black, white, gold
Origin
Official merch
Sources & image credits
ReferenceBadges for Replay (and I haven't slept since December)Temporal
ReferenceTemporal Replay badge siteTemporal
Referencebadge.temporal.io source code on GitHubTemporal community on GitHub
ReferenceBehind the badge: how we built 2,000 hackable badges for Temporal ReplayTemporal on dev.to
Render referenceAtomgoods AI studio · product reference: @icalvn on X

The story

Temporal built 2,000 hackable electronic badges for its Replay conference (Moscone, San Francisco, May 2026): an ESP32-S3 board with an OLED screen, an 8x8 LED matrix and a joystick, with open-source firmware on GitHub and apps (Doom included) preloaded. The back of the PCB is etched with Ziggy, Temporal's tardigrade mascot, as an astronaut. The engineer behind it wrote a making-of titled 'I haven't slept since December'.

What stands out

Open firmware plus a hidden mascot on the back makes a badge something to flip over, show off and keep hacking.

For your next brief

What would you hide on the back of your swag for the people curious enough to look?