A useful and fun project, from
Dec 1999 p38-39 information about the
project can be obtained from the author, John W2FS
This project allows
direct keypad frequency entry into the Icom, as well as some other
As well, I upgraded the project with a CI-V interface.
This allows serial input from a
controls the radio from one of the many programs available...
here is a look at the
serial input and selector switch
inside view of microcontroller and CI-V modules
My homebrew keypad, designed with EAGLE CAD
software, iron transferred from laser printed acetate
onto copper board and etched with ferric chloride.
The top silkscreen is transferred the same way,
after the holes are drilled (to allow alignment).