Thanks Adams I certainly will consider all that and I should give you an update as time goes on. In a message dated Thu, 14 Sep 2000 8:51:19 AM Eastern Daylight Time, "M. Adam Davis" writes: << Were I in your shoes I would choose one of the 16f8xx chips. Which one to you depends on several factors: How many and what type of input How many and what type of output Amount of processing needing to be performed on the processor Inputs to my weatherstation would be: Humidity (analog, or maybe one digital pin timing how long it takes to charge a capacitive element in the sensor) Pressure (analog) Temperature (one or two digital lines with a network of digital sensors) Wind direction (analog(1) or digital(4)) Wind speed (digital) Rain guage (digital) 4-8 buttons for user interface (4-6 digital) Perhaps a small radio tune to an emergency weather broadcast channel, decoded digitally (1 digital) Outputs from my weatherstation would be: LCD (6 to 12 digital lines) RS-232 (2 digital, also use this for firmware updates) Sound for alarm conditions (1 digital) one or two LEDs (2 digital, more if multi-color) I would rather cable one two or three wire cable from the base to the instrument tower, so I would need one PIC in each location, with one digital pin on each pic dedicated to communicating with each other. The tower requires: Analog in: 1-3 Digital in/out: 4-10 Minimal processing The base station requires: Digital in/out: 16-24 Medium processing Of course I would start out with only one processor, get everything going, then split it up. But at this point the PIC16F870 would fulfill all of the above conditions. I hope this helps! -Adam Alina Mothusi wrote: > > Hi there I'm trying to build a weather station for my design project could > you please help me out in terms of what kind of PIC microcontrollers should I > use for the project. This is for my senior design project so your quick > response will be appreciated. > thanks > > Mothusi > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > use mailto:listserv@mitvma.mit.edu?body=SET%20PICList%20DIGEST -- http://www.piclist.com hint: PICList Posts must start with ONE topic: "[PIC]:" PIC only "[EE]:" engineering "[OT]:" off topic "[AD]:" ad's >> -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.