https://github.com/hpsaturn/m5stickc-dcf77-hat

Basic implementation of a DCF77 receiver (hat) for the M5StickCPlus ESP32 board
https://github.com/hpsaturn/m5stickc-dcf77-hat

arduino dcf77 esp32 m5stack m5stickcplus platformio

Last synced: 3 months ago
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Basic implementation of a DCF77 receiver (hat) for the M5StickCPlus ESP32 board

• Host: GitHub
• URL: https://github.com/hpsaturn/m5stickc-dcf77-hat
• Owner: hpsaturn
• License: gpl-3.0
• Created: 2023-05-17T17:04:15.000Z (over 1 year ago)
• Default Branch: master
• Last Pushed: 2024-01-14T22:01:57.000Z (12 months ago)
• Last Synced: 2024-10-06T12:08:25.286Z (3 months ago)
• Topics: arduino, dcf77, esp32, m5stack, m5stickcplus, platformio
• Language: C++
• Homepage:
• Size: 940 KB
• Stars: 13
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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# M5StickC DCF77 HAT

Basic hat implementation of a DCF77 receiver on a M5StickC-Plus or compatible ESP32 devices. This firmware uses an [improvement of Arduino-DCF77 library](https://github.com/hpsaturn/Arduino-DCF77), using an event callback to improve the GUI and signal representation.

	

		

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## Device

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

(see the photos in [Thingiverse](https://www.thingiverse.com/thing:6033436))

## Usage

**Some tips:**  

- [x] Check the right device. Some devices has different frequencies for each country.

- [x] Try to leave the device from away any radio or wireless interference or noise. The radio is very susceptible to noise.

- [x] In indoors it 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: Unimplementened  

## Installation

Please install first [PlatformIO](http://platformio.org/) open source ecosystem for IoT development compatible with **Arduino** IDE and its command line tools (Windows, MacOs and Linux). Also, you may need to install [git](http://git-scm.com/) in your system.

For the **default** board, the `M5StickCPlus`, only clone this and upload firmware via USB cable with a simple command:

`pio run --target upload`

or import the project in VSCode and build and run it.

## Box

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

[![Box DCF77 M5StickCPlus Hat](box/collage.jpg)](https://youtu.be/C50qMhYiE60)

**Files:**  

![DCF77 box base](box/dfc77_holder_vertical.stl)  

![DCF77 box lid](box/dfc77_holder_vertical_lid.stl)  

Also in [Thingiverse](https://www.thingiverse.com/thing:6033436).  

---

## Thanks to

@felmue to fix a sporadical crash.  

@jcomas for the help and docs on https://t.me/esp_es  

The old [DCF77 library](https://github.com/thijse/Arduino-DCF77)  

The [Seiko documentation](https://www.seikowatches.com/instructions/html/SEIKO_8B92_EN/CWVVSYxxhbpilh)