AVR-Chat

You probably don't need to run off the same power supply but, if by 'two wire' you mean I2C-like, then you do need the same ground (and don't forget the pull up resistors).

There's no reason this won't work on a breadboard using DIP components. Been there done that (probably before you were even born.)

Of course, I would ask why you're doing it this way. I've found that good old RS232 is a lot easier for most things but that depends on your application.


Regards,


Tim Gilbert
JEM Innovation Inc.
303-926-9053 (office)
303-437-4342 (cell)
www.jeminnovation.com
www.pdksolutions.com


  ----- Original Message ----- 
  From: jstockma 
  To: AVR-Chat@yahoogroups.com 
  Sent: Friday, October 21, 2011 6:31 PM
  Subject: [AVR-Chat] Basic question about breadboards


    
  I am a AVR hobbyist and I am currently working on a project to design and program a two wire interface between to Mega AVRs in which one would send instructions to the second directing certain tasks. I have the software side of it well underway but I am having doubts about the hardware part of it. I have determined that I must power each chip from the same power source (in this case a voltage regulator) and that I must connect the two wire busses to a common ground. What I am concerned with is my basic choice to implement this on a breadboard. The busses would be the side rails. I am seeing conflicting opinions about breadboards and their suitability. I would be interested in more views on this from the group. Ultimately I can go with a soldered solution, but I would like to do the prototypes on a breadboard if possible, at least until I get it up and running. I have no EE or EE Computer science training. Thanks, 



  

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