LED Clock (DCF77)

A visualization for the DCF77 signal using 2 WS2812 / Neopixel LED Rings (60 and 24 LEDs). The DCF77 Signal is received via a Websocket Stream, buy you can adopt it to use a real DCF77 Receiver Module.

The intention is not to simple show the current time, but to show the single (bit) signals of the DCF77 signal.

Find more Information about DCF77 at Wikipedia.

Source Code and more Information / GitHub YouTube Video

3D Printed Parts

I printed the 3D Parts with PETG (white for the diffusor/shader), and whatever color you prefere for the case and the stands. I printed all parts with a 0.6mm Nozzle (@0.3mm Layer Height) - but also added a 0.4mm Version (= 2 Layers @0.2mm Layer Height) for 0.4mm Nozzles.

The Electronics-Box needs some support, the other parts are fine without any support.

Needed Parts

• 60 LED Ring (WS2812 / Neopixel)
• 24 LED Ring (WS2812 / Neopixel)
• ESP8266 (I used a Wemos D1 mini) or ESP32
• some cables to solder the LEDs and the Microcontroller together
• a little bit of Hot Glue to hold the LED Rings in place (the moulds are slightly larger)