
Numitron2
74hc595/Numitron-Clock
An alarm clock using 9-segment numitron displays
Boards in 5 GitHub repositories, designed in KiCad, that use the PCF2129AT/2 by NXP Semiconductors (-40℃~+85℃ 0.7uA 1.8V~4.2V 700nA Built-in I2C Watchdog timer、Temperature compensation、Backup power management and battery charging、Battery low-voltage detection、Timestamp function、Programmable clock output、Alarm function、Locking and tamper-proof、Periodic interrupt output Yes SOIC-20-300mil Real Time Clocks ROHS). See how each wires it, with its parts, size, README and files; the PCF2129AT/2’s symbol, footprint and pinout are on its own page.

74hc595/Numitron-Clock
An alarm clock using 9-segment numitron displays



BerkeleyLab/DxP-data-logger
Hardware design for the DxP (Distributed sensor Profiling) data logger that connects to a DxP sensor probe.

mirra-org/mirra
Firmware, web app/server and documentation for the MIRRA project.