MetaMorserino
a multi-functional Morse Code device (keyer, trainer, decoder)

  • CW Keyer with capacitive touch paddle, with a lot of nice features: 
    • speed variable with encoder (5-40 wpm)
    • polarity of paddle can be changed (dots on left or right paddle)
    • Iambic A, B, enhanced B, and Ultimatic mode
    • pitch control
    • output volume control
  • CW Trainer, outputs:
    •  speed variable with encoder (5-40 wpm)
    • characters in groups of 5 (alpha, numeric, interpuctuation, pro signs, mixed)
    • ham radio call signs
    • usual ham radio abbreviations and Q groups
    • you can increase length of pauses (aka Farnsworth method)
  • easily expandable to a Morse code decoder (already implemented in the software):
    • just add an op-amp and a few passive components (there is enough room on the PCB) to feed audio from a receiver
    • also decodes manual key input


  • menu and settings accomplished with rotary encoder
  • 2x16 character LCD display
  • runs on 9V battery, or 5V from USB connector (easily to adapt for LiPo battery etc.)
  • built-in speaker, headphone jack
  • jack to connect a transsceiver
  • one unwired jack for your own purpose
  • software supports external mechanical paddles (needs just some wiring)
  • CW decoder supports straight key (just wiring necessary to connect external key, or use the touch sensors as a straight key / sideswiper) – you can key up your TRX with the manual key and read your code on the display)
  • minimal and cheap hardware, based on an Arduino Nano
  • all functionality done in software (which is open source, BTW)
  • complete kit including PCB, all parts and drilled case is available for €36 plus postage (send an email to: oe3hbs@oevsv.at )
  • full documentation (manual currently only in German) and source code is available on bit.ly/metamorserino. User interface is in English, as are comments in the source code.


© Willi Kraml 2014