M5StickC DCF77 HAT

Basic hat implementation of a DCF77 receiver for M5StickC-Plus or compatible ESP32 devices. This firmware uses a improvement of Arduino-DCF77 library, it is using a new events callback to improve the GUI and signal representation.

Device

The current firmware was tested on 77.5KHZ single frequency device. It is the 4 pins version and it was bought here in Aliexpress.

Wiring

Usage

Some tips for this working:

• [x] check the right device. Some devices has different frequencies for each country.
• [x] Try to remove the device from any radio or wireless intereference or noise. The radio is very susceptible to noise.
• [x] In indoors works, but is possible that in some builds doesn't. Try in outdoors first
• [x] the position of the device for me was important, in horizontal is possible that it works better

Buttons:

• Left button: Power ON/Off
• M5 Button: Backlight or brightness toggle
• Right button: unimplemented

Firmware

More details in Github

Box

Is a basic box - hat for these devices, for example M5StickC or M5StickC-Plus, also should be work in M5CoreInk device.