digital

Sean Hodgins built a GPS-disciplined PPS timing reference into a wrist-worn form factor — no microcontroller, no firmware, no time display, just a u-blox GPS module driving BNC outputs through hardware logic buffers.

The Ollee Watch team has shared a roadmap for the rest of 2026, with a Q2 firmware update due this week and three major features — notifications, activity tracking, and third-party apps via a new platform called Ollee Forge — planned for the year.

Designer Daniel Idle built a sterling-silver-plated signet ring with a mini OLED display embedded in the face, looping the green falling-code animation from The Matrix.

A replacement PCB and firmware fork turns a stock Casio G-Shock DW-5600 into a fully programmable, open-hardware watch.

A drop-in mainboard replacement gives the classic Casio F-91W and A158W Bluetooth syncing, step counting, heart rate, and built-in games while keeping the original case, LCD, and feel.

Daniel Ansorregui's ESP32 smartwatch pairs a built-in solar panel with e-paper and a clever RTC-memory boot trick to stretch run time to months.