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Morse Signal
Turn the 5 key into a telegraph key: tap out words in Morse code or read a flashing signal lamp against the clock.
Experimental Emulator verified v1.0.0 18.7 KB
The JAR and JAD are the Original Java ME Version for phones and emulators. How to install.
About
A playful Morse code trainer built around the phone keypad. In Send mode the 5 key becomes a telegraph key - a quick tap is a dot, a longer press is a dash, and a short pause ends the letter. Key whole words letter by letter while the code for each letter is shown, and build combos for clean sending. In Receive mode a lamp flashes and beeps a letter; pick the right one from four choices with keys 1-4, answering before the signal ends for a bonus. Each round lasts 90 seconds.
Objective: Score as many points as possible in 90 seconds.
Modes: Send, Receive
morse code timing education keypad
Screenshots captured from the real JAR at 176x208 on the project's reference runtime; the third image is rendered by MicroEmulator 2.0.4.
Controls
| Key | Action |
|---|---|
| 5 | Telegraph key (tap = dot, hold = dash) |
| 1-4 | Choose letter (Receive) |
| 0 | Replay signal (Receive) |
| * | Pause menu |
In every game: 5 selects in menus, * pauses, and on the title screen # opens help and 0 toggles sound. The joystick and 2/4/6/8 are interchangeable.
Verification
| Level | Status | Details |
|---|---|---|
| Build verified | Yes | Compiled against CLDC 1.0 / MIDP 2.0; JAR + JAD generated |
| Reference runtime | Yes | Passed at 128x128, 128x160, 176x208, 176x220, 240x320 |
| Emulator verified | Yes | Automated smoke test on MicroEmulator 2.0.4 (176x220) |
| Real device verified | No | Not yet tested on real hardware |
Tried it on a real phone? Send a device report.
Technical details
| MIDlet | morsesignal.MorseSignalMIDlet |
|---|---|
| Platform | Java ME, CLDC 1.0, MIDP 2.0 |
| JAR size | 18.7 KB |
| Screens | 128x128, 128x160, 176x208, 176x220, 240x320 |
| Storage | RMS record store gk (settings, best score) |