I'm working on a project that will run two or three analog sensors. It would be great if I could collect the data from each sensor with a atiny85 and then send it to a arduino mega via an XBee series 2. Would connecting the ATiny to the XBee work the way I have it drawn in the picture? R3 & R4 form a voltage divider to shift the logic to 3.3 for the XBee. R2 is referenced on this site/example: http://www.ernstc.dk/arduino/tinycom.html
Should I leave R3 in or is it going to mess with the integrity of the signal?
Will this plan actually work?
Any input suggestions or critiques would be appreciated.