Morse Code Trainer Card — LED Path Guidance Record

Description

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Learn Morse code the visual way

Most people give up on Morse code because memorizing dot-dash tables is boring. This pocket-sized PCB trainer turns the classic Morse decoding tree into an interactive light path: every dot and dash you key in is traced live by LEDs across the board, so you can see how E becomes A, A becomes R, and R becomes L. Your fingers and eyes learn the code together.

The front of the card is a gold-on-black Morse alphabet chart with gold-plated pads — it doubles as a reference card even when powered off. The back carries the electronics: tactile Morse key, buzzer, LEDs, and slide switches, all running off a single CR2032 coin cell with under 10 µA standby current.

Features

• LED path guidance — LEDs trace the Morse decoding tree branch by branch as you key in dots and dashes, giving instant visual feedback on every character.

• Real Morse key input — Short press for dot, long press for dash. Practice real keying rhythm, not just flashcards.

• Record & playback — Record a sequence with the REC button, then play it back to test yourself or send a hidden message to a friend.

• Mute mode — Silence the buzzer and practice with lights only. Perfect for classrooms, offices, and late-night sessions.

• Integrated alphabet chart — The full A-Z decoding tree is printed on the front in gold. Decode at a glance, no phone app needed.

• Truly pocket-sized — 54 x 40 x 7.7 mm, 11 g, with a lanyard/keyring hole.

• Months of battery life — 3V CR2032 coin cell, under 10 µA standby draw.

How it works

• Initial setup — Slide up the Main Power switch (K1) and the Main Function switch (K4).

• Train — Key in Morse with the red key: short press for dot, long press for dash. Watch the LED path walk down the decoding tree to the letter you just sent.

• Mute mode — Slide up K2 to practice silently with lights only.

• Record & playback — Slide up K5, press REC, key in your message, then slide up K3 to play it back.

Who is this for?

• Ham radio operators (and future ones) building CW muscle memory

• STEM teachers and scout leaders who want a hands-on codes and signals activity

• Escape room designers and puzzle builders

• EDC and desk-toy collectors who appreciate nice PCB art

• Anyone looking for an unusual, affordable gift for a curious person

Specifications

• Dimensions: 54.0 x 40.0 x 7.7 mm

• Weight: 11 g

• Power supply: 1x CR2032 coin cell

• Operating voltage: 3.0V

• Standby current: under 10 µA

• Operating temperature: -10C to 50C (14F to 122F)

• Controls: K1 power, K2 mute, K3 playback, K4 main function, K5 record, plus Morse key and REC button

• Output: LED path indicators and piezo buzzer

• Finish: matte black solder mask, gold-plated pads

Usage and care notes

• Use in a dry, low-humidity environment; the PCB is exposed, not enclosed.

• Replace the CR2032 in time and mind the polarity.

• Not intended for children under 3 due to small parts and a coin cell.

What makes it special?