BLE Morse key

* Thanks for the source code and project information provided by @QIN FU

Story

Development material

System configuration

Modification of Morse key miniature module

Simply solder two jumper cables, one positive and one negative, to the unused connectors of the tact switch. When connecting with M5Stack, turn off the power to the internal battery.

Configuring M5Stack

M5Stack Core
UIFlow_Fire v1.7.5
UIFlow-Desktop-IDE v1.7.4 (select "Fire" for Device)

*Without this configuration, "BLE UART" cannot be used with M5Stack Core.

story

The miniature Morse key retains its original functionality, but by connecting the M5Stack, the signal becomes a Bluetooth device.

The miniature itself was designed to be easy to modify, so there was very little effort involved in that part.

M5Stack GRAY has a Bluetooth function, but it is now quite old and the "BLE UART" panel could not be used in UIFlow with the latest firmware. Therefore, the first challenge was to find a method that could be used.

The receiving side was developed using JavaScript using the Web Bluetooth API.

I wanted to get another miniature so that they could communicate with each other, but unfortunately, by the time I realized it, the miniature was no longer on sale...