AVR-Chat

Fo9r old or young, experienced and inexperienced, Breadboards are a great
way to develop and test something.
 
What I don't agree with is the statement that you MUST have the same power
and grounds. Proper design will allow this to be partly or completely
ignored. Let us know just what interface it is and we will all try and help
you.
 
But do get it running on one supply so that you know that it works first, as
someone else said, on two separate Breadboads, then (if the distance is
great) we will help you getting  the separate supplies working if need be...
 
Regards
 
Andy
PS. If you want Breadboard design software to allow a a design to be
converted later into a schematic and or many different PCB types (Eagle CAD
compatible. Eagle CAD Lite is free too!), even SMD parts if you wish, then
go and download the free open source program "Fritzing" from here:-
 
http://fritzing.org/
 
In the language of your choice. 
 
Many YouTube Tutorial videos when searching under the name "Fritzing".
 
 


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