AVR-Chat

Thanks, woulf  the internal pulls ups be sufficient? My design includes external pull up resistors.
John Stockman

--- In AVR-Chat@yahoogroups.com, "tim gilbert" <tim@...> wrote:
>
> 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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>   
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