Software/general TODOs:
-----------------------

 - TODOs in code

 - Low battery indication via ADC
     - which input?
     - connect
     - measure voltage
     - measure power consumption (in sleep mode, documentation in power_consumption.xls)

 - Implement RS232 output
     - create cable
     - output the EEPROM contents

 - Also parse GP-GGA in order to catch "Satellites Used" field for quality indication

 - Use button 1/2 for configuration

As soon as available:
=====================
 - replace processor by PIC18F26K22
     - has a much lower sleep power consumption!!!
     - check layout
     - adjust software
     - assure everything is working
     - measure power consumption  (in sleep mode, documentation in power_consumption.xls)

KiCad TODOs:
------------
 - Brcke "LCD_Enable" unter LCD-Wanne weiter nach unten schieben, um Kollision mit Wanne zu vermeiden
 - 2k2 statt 10k fr die LED-Vorwiderstnde
 - MAX1674: - LBO offen, 100k entfernen
            - LBI auf GND, 500g trimmer entfernen (braucht zu viel Strom!)
 - +BATT an einen ADC-Eingang des PIC fhren zur Spannungsmessung fr low-battery-detect?
 - use gullwing LEDs instead of 3mm in order to decrease board size on component layer?
   (markus_smd_led_plcc2_osram_topled_reverse_gullwing.mod)




Changes:
--------

v2.1 (only changes on second PCB):
 - adjusted layout to decrease board size
 - flipped the layout to allow optimum positioning in the box

v2.0:
 - Replaced processor 18f14k22 by 18f2520
 - added two keys for debugging
 - added RS232 out
 - replaced some parts by SMD
 - exchanged buzzer

v1.1:
 - added low-pass filter for servo

v1.0: first version