Not enough for what? Running the motors and the RPi from the same supply? No. Run the RPi from a different supply, or you will have a lot of trouble.
Except new LiPos are 3.7v nominal and can be as high as 4.35v when fully charged. Two in series == 8.7v
That picture is so hard for me to understand xD
The device in the picture is L293D which has the diodes in-built.
My reading of the picture is that the 5v (red-white dotted) is only connected to the L293D pin 16, nowhere else.
Oh yes, so they are. Thanks.
No, this is as simple as it gets. One IC, two motors, and a power source! Nobody should ever be designing in an IC (or even a transistor) without being familiar with its data sheet and checking it is capable of doing what you want and what requirements have to be met. That's the basics of electronics design.
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