YourITronics

The WhereAVR is a small, lightweight, low-power, and low-cost APRS tracker with a full compliment of analog and digital I/O, as well as the ability to decode ax.25 packets. This allows for the reception of remote commands without the need for a “real” TNC. It is designed to hook directly to the speaker and microphone jacks of a handheld radio. One caveat, however, is that it currently doesn’t have a spiffy configuration utility.

The WhereAVR: [Via] - [Link]

This circuit design is very basic, but it does the job, and thats adding something over a video. Source code and schematics are provided on the authors page.

ATmega8 Video Overlay Circuit: [Via] - [Link]

The unique automated Morse Code CW Identifier is designed around the ATmega8L microcontroller.

Morse Cose Identifier: [Via]