Order Tray | Contact Us | Home | SIG Lists

[aprssig] APRS telemetry and the PIC 16F877A

KA8VIT ka8vit at ka8vit.com
Wed Jan 24 22:07:40 UTC 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