Folks
I've had quite a substantial increase in enquiries regarding the LVB Tracker over the past few months, and a significant number of those have been regarding the LVB Tracker 2.
In case you are unaware, the LVB Tracker 2 is an updated version of the original tracker, its fundamental difference being that it performs real time prediction and tracking by itself without the need to be hooked up to a computer.
All that is needed to upgrade an LVB Tracker 1 is a replacement $10 PIC (18F2620) that is pin-compatible with the original PIC. Other than programming the new PIC, no other changes are needed: you don't even need to switch on your soldering iron!
The part number is available form a number of sources, for example:
Mouser 579-PIC18F2620-I/SP Digikey PIC18F2620-I/SP-ND RS (UK) 623-0768 Farnell (UK) 1212698
Until a couple of weeks ago I had not touched the code for well over two years, but with the new interest I have spent a bit of time fixing a couple of known bugs (see below).
Please be aware that as this is a work in progress, I am sure there are a number of things that aren't quite right yet, so I welcome your feedback.
Bug fixes 2.0c:
o Second attempt to fix the hanging during AOS/LOS calculation
o Additional menu option to delete all satellites
o Fixed a Kep Load bug that occasionally incorrectly indicated a bad checksum
18F2620 programming software: http://www.g6lvb.com/Articles/LVBTracker2/PicProg2.exe Hex file: http://www.g6lvb.com/Articles/LVBTracker2/2620test20c.hex Sources: http://www.g6lvb.com/Articles/LVBTracker2/2620test_2_0c_001.zip
73, Howard G6LVB