Combination of air quality monitor & DCF77 clock.

big 7 segment clock with DCF receiver

DIY ATmega328P/Arduino IDE based logger for temperature and time. Device is powered by a small solar panel

A DCF77 decoder written in C++

A clock using a DCF77-signal decoder algorithm not using interrupts. The received bits are made visible with other info about the signal. The time is send into the ether with a HC12 transceiver.

Arduino - DCF77 trasnmitter.

Example code for a Nixie clock with an Raspberry Pi Pico (RP2040).

a set of USB sound / DCF77 tools

a visualization of the dcf77 signal with an arduino and ws2812 leds

A solar powered ATmega328P based DIY device to control 433 MHz ASK power outlets

DCF 77 decoder including buffered clock for Arduino

DCF77 time signal decoder

ESP8266-based NTP to DCF77 transmitter, ready to use with detailed instructions manual

DIY ATmega328P/Arduino IDE based clock without a display that speaks the current time acoustically when a motion is detected by a PIR sensor

DCF Zeitserver für Deutschland

Using one ATmega328P with 16 MHz crystal for sending / modulating DCF77

DCF77 RTC Clock

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

This Arduino code decodes the DCF77 signal without the use of interrupts.

DCF77 Transmitter for ESP32