Hi, I am building a small project which is made up of several modules. I will connect each module using a 4 pin connector which will be Power/Gnd and Data.
Some of the modules will have their own power however some others won't have.
I need to build the circuit in such a way that if I connect 2 modules which have their own power, won't interfere while if I connect 2 modules where only one has power, it will power the other module.
Attached is an image which shows just the MAJOR components whereby A shows a module which supplies his own power and B shows a module which requires power from the connector.
What happens if I connect:
A to A ?
A to B ?
B to B - This will never be the case since I need to have power from somewhere.
What about that diode? it will drop 0.7v making my precious 5v down to 4.3V
Do I need that Diode in the first place?
Thanks all
X
Some of the modules will have their own power however some others won't have.
I need to build the circuit in such a way that if I connect 2 modules which have their own power, won't interfere while if I connect 2 modules where only one has power, it will power the other module.
Attached is an image which shows just the MAJOR components whereby A shows a module which supplies his own power and B shows a module which requires power from the connector.
What happens if I connect:
A to A ?
A to B ?
B to B - This will never be the case since I need to have power from somewhere.
What about that diode? it will drop 0.7v making my precious 5v down to 4.3V
Do I need that Diode in the first place?
Thanks all
X
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