Morse Code Trainer Kit
 
This is quite a nice kit to build with very good quality PCB.
I've enjoyed building my own and it works nicely - it will only decode live  - clean signals up to about 11 words per minute. 
The Morse operator needs to have pretty consistent code to receive error free decoding - but it is capable of decoding such a signal (if it exists!)
 
I've fed in good clean computer generated Morse Code audio signal from Fldigi software and 11 words per minute seems to be the limit - so don't expect miracles but for a trainer for someone new to morse or a fun kit to build with potential for mod - how about a beacon?
 
Have a look at the videos I have added.
 
The single page instruction sheet is ok and I built the kit will little issues in about 30-40 minutes, however I will offer full build instructions with plenty of images - to be e-mailed as a pdf. if you require them.
 
I'll add in a 9v battery clip too.
(also offered as a pre-built and tested unit)
 
Optional items available in seperate sales: 
Acrylic Case; Morse code Key kit and 9v PSU (Euro pins but comes with UK adaptor
 
Feature:
1. This CW Morse code decoder DIY kit is convenient for students and electronics enthusiasts to learn and practice Morse code.
2. It can recognize the dots (.), dashes (-) and spaces of Morse code and convert them into corresponding characters or numbers.
3. Support CW audio signal input and display the received Morse code.
4. Can decode the received Morse code audio into characters and display the received code rate.
5. Widely used in early radio communications, Morse code is not only a way of communication but also a hobby and challenge, a way to understand and learn telecommunications technology.
Product parameters:
Kit name: CW Morse code decoder
Power supply: DC9V power supply
Working voltage: 9V
Working current: 33mA
PCB size: 101x50mm
Functions:
1. CW audio signal input
2. Display received Morse code
3. Decode received Morse code audio into characters
4. Display received bit rate
5. External CW button for practicing Morse code

Operation instructions:
(1) Connect to DC9V power supply.
(2) Connect Morse code audio to the cw audio input terminal, which can decode Morse code audio into characters and display them on the LCD screen.
(3) The cw audio output terminal can output received Morse code audio and can be connected to speakers or headphones.
(4) Adjust the receiving threshold potentiometer to match the LED flashing frequency with the sound heard. (If it is not adjusted properly, the decoder cannot decode the audio)
(5) Press the self-locking switch to view the input Morse code, and it will not be displayed if it is released.
(6) Press the touch switch to check the code rate of the received Morse code.
(7) The CWKEY end is connected to the keypad to practice Morse code. The Morse code input by the keypad will be displayed on the LCD screen. (It cannot be input at the same time as the audio input, otherwise it will interfere with each other and cannot be decoded correctly)
(8) Short press on the keypad is a dot, and long press on the keypad is a dash. (Long press for more than 360ms is a dash, otherwise short press is a dot)
 
Product list:
1X decoder DIY parts