M5StickC DCF77 HAT

thingiverse

<iframe width="560" height="315" src="https://www.youtube.com/embed/C50qMhYiE60" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe> # 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 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](https://github.com/hpsaturn/m5stickc-dcf77-hat#readme) ## Box Is a basic box - hat for these devices, for example M5StickC or M5StickC-Plus, also should be work in M5CoreInk device.