Walkie Tappie (Wireless Morse Code)

Ditch your phones for a wireless Morse code transmitter!

May 22, 2020

2598 views

2 respects

Components and supplies

1

Gikfun Round Micro Speaker Diameter 30mm 8Ohm 8R 2W for Arduino Mini Box Speakers DIY

1

Stemedu 2 Sets LoRa32u4ii Lora Development Board Module

1

Lithium Ion Polymer Battery

1

Telegraph Key

1

Resistor 221 ohm

Tools and machines

1

Soldering iron (generic)

1

3D Printer (generic)

Project description

Code

Morse code

arduino

-Beeps when button is pressed. -Records timing of button presses. -Sends timing info over LoRa. -Receives and plays message. You'll need the radiohead RF95 library : https://github.com/kenbiba/RH-RF95

Morse code

arduino

-Beeps when button is pressed. -Records timing of button presses. -Sends timing info over LoRa. -Receives and plays message. You'll need the radiohead RF95 library : https://github.com/kenbiba/RH-RF95

Downloadable files

Hookup schematic

Wire up your arduino according to this diagram. The button represents the telegraph key!

Hookup schematic

Hookup schematic

Wire up your arduino according to this diagram. The button represents the telegraph key!

Hookup schematic

Documentation

Antenna holder

This 3d printed part helps attach the antenna to the telegraph key.

Antenna holder

Comments

Only logged in users can leave comments

Anonymous user

4 years ago

FYI there is a vibrant morse keyer project https://github.com/k3ng/k3ng_cw_keyer and I have used it to do wireless keying over ESP-NOW https://www.youtube.com/watch?v=OppEUv7Lreg I found there are many advantages of esp-now, as it comes with any esp32 or esp8266 board, easy to use, and very fast with good range.