AVR-Chat

I would go for the MAX232 too.
I have used it in dozens of projects and found it to be very reliable.

http://www.ckp-railways.talktalk.net/pcbcad21.htm

Andreas Stemmer <groovingandi@gmx.de> wrote:                                  jemal wrote:
 >   does anybody knows an IC (non programmble) that changes voltage level from 0&5v  to -12 & 12v respectively just toss  the ic number
 
 Take a look at max232.
 
 AS
 
 
     
                       

 		
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