AVR-Chat

> Is it possible to use Modbus + Avr?
> Does anyone have some info or links about it?

Yes do a Google search for "modbus serial AVR" and you will get several

Notable ones are:

http://www.modbus.org/default.htm 

http://www.mcselec.com/modbus.htm

http://homepage.sunrise.ch/homepage/meitel/avr/modbus/

http://www.control.com/1026180924/index_html

Cheers

Alex Shepherd