DIY

How to build a cloud-connected photo frame using Raspberry Pi 4 and Google Drive (via rclone). Photos sync automatically — no SD card swapping required. Uses fbi for framebuffer display and Python for slideshow control. The improved version is 1700% faster to start. Source code available on GitHub.

How to use an M5Stack ATOM Lite and a JJY antenna board to build a low-cost JJY signal simulator for radio-controlled clocks in rooms where the standard time signal cannot be received. Total parts cost under JPY 5,000 — a fraction of commercial retransmitters. Includes setup steps and known limitations.