Well Byon has been busy with further development on the TinyTrak4 firmware code. The new Alpha Code update, introduces the ability to add a keyboard directly to the unit, making this into a portable APRS messaging tool. To take advantage of this feature you will need the 4×20 compatible LCD add-on unit to make use of this!
I've yet to test the extra functionality as I need to get a mini 6-pin din socket to add to the back of my TinyTrak4D. Once I have this done I'll post my testing results and post some pictures as well… 😀