jjy

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

A multiband time signal radio transmitter for Raspberry Pi

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

Emulator of DCF77 time signal through audiochannel

Browser-based tool to synchronize radio-controlled watches through simulating WWVB, BPC, DCF77, MSF, JJY

JJY transmitter for Raspberry Pi Pico W

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

Accurate time signal generator for radio-controlled watches.

jClock (sync with Casio MB6 JJY) for Flipper Zero

jjy simulator using raspberry pi

JJY time signal generator / simulator for ESP32-C3 — NTP-synchronized, OLED display, Arduino compatible.

JJY Simulator Rev.3 for ESP32-C3 / ESP8684

This is a JJY (Japanese Standard Time Signal) receiver that runs in your web browser.

Radio Clock tools box.

JJY emulator with web audio

Python WWVB / JJY low-frequency time-code transmitter for Raspberry Pi (3, 4, Zero, Zero 2 W, Pico). Manual, system-clock, or GPS time sources.