M5StickC DCF77 HAT

# 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](https://www.aliexpress.com/item/1005005254051736.html).

## Wiring

| M5StickC pin | DCF77 pin | Description |
|:----:|:----:|:-------------|
| 0 | P | PON: Enable/Disable |
| 26 | T | Interrupt pin or data |
| 3.3v | VDD | Positive (3.3v) |
| GND | GND | Ground / unlabeled pin |

## 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