[aprssig] APRS telemetry and the PIC 16F877A
KA8VIT
ka8vit at ka8vit.com
Wed Jan 24 17:07:40 EST 2007
Hi all,
I use the Atmel AT89S8252.. it is an 8051 variant with 8-kb of in-circuit
programmable flash, 2-kb of EEPROM, 256-bytes of ram... serial port,
3-16 bit timers... dual data pointers and more...
Even when you add a $1.10 for a crystal they are cheaper than the pics
and way out class them.
I have been playing around with them and using a 4-bit R2R ladder and
a 20-bit phase accumulator to generate tones used for packet, RTTY,
DTMF and more.
http://ka8vit.com/dds
The Atmel AVRs are also an excellent choise with many of the same
features as the 8252.
73
Bill KA8VIT
Jason Winningham wrote:
> I found working with the PIC to be like hitting myself with a hammer -
> it feels good when you stop. Architecture is RISC enough to make
> assembly programming painful for a project of any size, compilers all
> cost $$.
>
> I'm playing with the Atmel AVRs, in particular the ATmega8 on the
> Arduino. http://www.arduino.cc/ It's got an IDE that's free, high
> level, and cross platform (including Mac OS X). It's built on avrlib,
> so you can disregard their GUI and use it instead if that cranks your
> tractor.
>
> The Arduino NG has 6 pins that can be analog inputs or digital IO,
> plus a bunch more digital IO (total of 20 I/Os). It includes a
> built-in RS232 to USB adapter.
>
> US$32 at www.sparkfun.com
>
> Just a satisfied user, standard disclaimers apply.
>
> -Jason
> kg4wsv
>
--
Bill Chaikin, KA8VIT
USS COD Amateur Radio Club - W8COD
WW2 Submarine USS COD SS-224 (NECO)
ka8vit at ka8vit.com
http://ka8vit.com
http://www.usscod.org
QRP-L NBR: 2596
FP#-1043
More information about the aprssig
mailing list