Running a vintage secondary clock, using DCF77 or WWVB and Raspberry Pi Pico. Also a version that does not use Radio and uses a Pico W.

Arduino library to transmit WWVB and JJY with a 40kHz or 60kHz carrier

A multiband time signal radio transmitter for Raspberry Pi

WWVB 60Khz Full functionality receiver/parser for i2c bus based ES100-MOD

WWVB emulator using an ESP32

Generate WWVB timecodes for any desired time

A wspr transmitter/receiver using the QRP Labs arduino shield

Alarmclock based upon a Arduino Uno with an 3.5 inch (320x480) TFT shield.

JJY (WWVB) standard radio wave signal receiver library for Arduino.　Arduinoの日本標準時受信モジュール用ライブラリ

WWVB signal decoding using audio card

Clock receiver for project RFID-MS, project MOMO and project TAMDL (Animal Mainboards). Is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.

Synchronize most radio-controlled ("atomic") clocks and watches using almost any phone or tablet

Arduino based clock that syncronizes to NIST's atomic time signal WWVB. Uses ES100-mod to recieve and decode the time broadcast.

mikrobus WWVB Time Signal Receiver Module using ES100-MOD

A simple modification to an atomic clock provides a visual indication the the WWVB signal is being received