Below you can find a free, fully-functional, firmware for ATmega168: it is the starting point for building an IK1ZYW Frequency Reader for FT-817(ND). Please download and read through the User's Manual, that contains important hints for both builders and users.
The free firmware does:
A PCB artwork is not (yet?) available, even though it will probably in common with the Interactive Frequency Reader.
Right click on the following links to save these files to your computer: