TinyTrak  www.byonics.com/tinytrak

Enclosed is the current version of TinyTrak (v0.5) 
This includes a .HEX file for programming the PIC16F84-10
micorcontroller, the Windows Configuration program,
and the schematic.

The following has been changed from the previous version (v0.4):
  Added R14 10K to serial in line
  Added power LED to schematic
  Added more documentation

The following has been changed from the previous version (v0.3):
  Added a timing calibration adjustment to compensate for osc error
  Started on a User's Manual

The following has been changed from the previous version (v0.2):
  Added support for PTT IN transmissions (like MIC-E)
  Added SW1 control to adjust report rate
  Modified timing to improve KPC-3 recption

The following has been changed from the previous version (v0.1):
Firmware:
  Default options changed
  Valid LED now shows 3 states: OFF for no GPS data, FLASHING
    for unlocked GPS data, and ON for locked GPS data
  Carrier Detect LED shows 3 states: OFF for no audio heard for
    quiettime seconds, ready to transmit. FLASHING for no audio
	currently heard, but still in quiettime.  ON for audio 
	currently heard.
  Lower valid LED timeout now shuts off after 2-3 seconds.

Hardware/Schematic:
  Changed R5 to 220K to get better range on Icom HT.
  Added diode to PTT IN line
  Re-drew schematic
  Added 5V regulator

Configuration Software:
  Added quiet time
  Added APRS/MIC-E message,path,symbol, and alt symbol flag
  Added result dialog for success and failure reading and writing
  Read twice to insure valid data, with retries.
  Read after write to insure correct wirte, with retries
  Added error dialogs for failure to aquire COM port, and
    missing TinyTrak

Pending features:
  Add Manual (MIC-E) support
  Save setting in registry
  Add Help file
  Report buffer overflow
  Add reverse polarity diode
  Write 9600 baud version
  Write 300 baud version
  Write Manchester version
  Possible re-name to PicTrak to avoid confusion with TigerTrak
  PCB soon available from FAR Circuits

Beta-testers please reply with comments to
tinytrak@byonics.com

Byon Garrabrant  N6BG  11/5/99