425 Morse Code Trainer
425 : Morse Code Trainer
- Author: Angelo Nujic
- Description: Interactive Morse Code learning game with 7-segment display
- GitHub repository
- Open in 3D viewer
- Clock: 100 Hz
Morse Code Trainer
An interactive educational game that teaches Morse code through hands-on practice with a 7-segment display and tactile input.
How it works
This Morse Code trainer presents letters on a 7-segment display and challenges users to input the correct Morse code pattern using a switch. The system provides immediate feedback and progresses through the english alphabet.
Game Flow
- Character Display: When Start switch (sw0) is moved a letter is shown on the 7-segment display
- Input Phase: User inputs Morse code using the switch 1
- Short hold (~200ms) = Dot (.)
- Long hold (~400ms) = Dash (-)
- Validation: System checks input against expected pattern
- Feedback: Shows . for correct, no dot for wrong
- Progress: Move Start switch back, and into start position to start again.
How to test
The design can be tested in simulation or on hardware:
Simulation Testing
- Run the provided cocotb testbench
- Observe state transitions and timing behavior
- Verify correct morse pattern recognition
- Test button debouncing and edge cases
Hardware Testing
- Connect 7-segment display to
uo[6:0] - Connect status LED to
uo[7](else dot is used on 7-seg display) - Connect telegraph key to
ui[0] - Connect navigation buttons to
ui[1] - Power on and follow the learning sequence
External hardware
Required Components
- 7-Segment Display: Common cathode, connected to
uo[6:0] - Status LED: Connected to
uo[7]with current limiting resistor - Start: Momentary switch connected to
ui[0] - Telegraph Key: Momentary switch connected to
ui[1]
Optional Enhancements
- Buzzer: For audio feedback (requires additional output pin)
- Pull-up Resistors: For reliable button operation (10kΩ recommended)
- LED Indicators: Additional status LEDs for game state visualization
Pin Configuration
ui[0] - Start switch
ui[1] - Morse Key Input (active high)
uo[6:0] - 7-Segment Display (A-G segments)
uo[7] - Status LED (correct/incorrect feedback)
This Morse Code Trainer combines historical significance with modern digital design, creating an engaging educational tool perfect for ham radio enthusiasts, educators, and anyone interested in classic communication methods!
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | start | seg_o[0] | |
| 1 | morse | seg_o[1] | |
| 2 | seg_o[2] | ||
| 3 | seg_o[3] | ||
| 4 | seg_o[4] | ||
| 5 | seg_o[5] | ||
| 6 | seg_o[6] | ||
| 7 | correct_res |