AVR-Chat

Kong wrote:

>hi all,
>
>foa, newbie here, so pls go easy, if you could ;-)
>i'm looking at building a weather station. google tells me there are a 
>few out there based on PIC. someone suggested AVR atmega169 but i'm put 
>off by its mlf packaging.
>i'll need adc, lcd, push buttons, ram/flash to store data history, 
>serial to PC later. it looks like pic16f877 should be the trick for me 
>but i figure i should give avr a chance. so i'm here looking at the 
>whys/why-nots of using AVR to build my weather station.
>ok. flame away.
>  
>
   An additonal note, not related to the AVR vs PIC issue:


  In an older issue of Circuit Cellar, Ink, there is a feature on 
building your own ultrasonic anemometer.  realtively simple, at least 
from the hardware perspective:  foiur small towers, on the corerns of a 
small platofrm, each with an ultrasonic transducer mouted at the top, 
each transducer pointed tooward the diagonally opposite corent, and 
mounted to that the corners are in the NW/SE, NE/SW directions.  A 
lkittle software magic measuring temprature and changes in propagation 
delay of utlrsaonic burts between the corners, and viola!  Instant 
ultrasonic anemometer.  Cool, eh?  I'll look up the specific cite for 
you guys and post it later, but it is availabelonlineat 
www.circuitcellar.com (I am pretty sure of the URL).  Publishedin 1998 
or so. (original proejct based on a PIC and a mini-computer)
tom