Paralleling remote control buttons for a toy car with 12F675 circuit.

Thread Starter

willums

Joined Feb 21, 2015
2
With pic power off, the RC buttons are seemingly connected to each other from inside the pic. Are the pins internally connected at power off and can I avoid this?
 

#12

Joined Nov 30, 2010
18,216
The input pins would be likely to have a diode each connected to the power pin as a safety for the inputs. Does this idea match what you're seeing?

With no voltage on the power pin, the diodes will only cause 5 or 6 tenths of a volt difference.
 

Thread Starter

willums

Joined Feb 21, 2015
2
The input pins would be likely to have a diode each connected to the power pin as a safety for the inputs. Does this idea match what you're seeing?

With no voltage on the power pin, the diodes will only cause 5 or 6 tenths of a volt difference.
Thanks AAC When one RC button is pressed (providing an earth) then other functions are initiated, which means a common earth is provided from the pic pins.
 
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