2 layers100 × 100 mmBf-025botanicfields/PCB-RGB-LED-276-M5AtomCircle clock using 276pcs of WS2812C-2020 and an M5Atom578 parts4CC0-1.0
2 layers44 × 44 mmBf-027botanicfields/PCB-RTC-PCF8563-for-M5a PCB of PCF8563 RTC with Grove I2C for M5Stack and M5Atom synchronized with NTP25 parts2CC0-1.0