I 've read now the .c file included in the lvb distribution, I noticed that xtal frequency surely affects the baud rate.
I will find a 4 Mhz xtal, sorry for BW. ________________________________ Da: Stefano Simonetti <iw1...@yahoo.it> A: amsat-bb@amsat.org Inviato: Sabato 22 agosto 2009, 23:45:29 Oggetto: [amsat-bb] lvb tracker circuit -- xtal? Hi, I have problems in making the LVB tracker circuit run. I have built the LVB tracker ver. PCB v1.2, Firmware v0.7, Programmer v0.2, Documentation v1.9, 7 Dec 2004, by G6LVB. The firmware was flashed successfully with IC-PROG v 1.06B, a homebrewed interface for LPT, and an old PC with LPT1 running win98. The LVB circuit requires a 4 MHz XTAL for the PIC 16F876A. I tried with a 10MHz, and a 3,5795MHz as I haven't a 4MHz. No success. No LCD, no serial communication at all. Does anybody know if the problem could be in having installed a different xtal (i.e.: does the firmware takes care about the frequency of the clock?)? Regards, Stefano Simonetti (IW1RDZ) - Italy. _______________________________________________ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
