I know that manufactured hbridges have separate inputs for logic power and motor power because motors typically require more power; however, I am using a low voltage motor and would really like to run the whole thing off of one power source. I have done this in the past using an adafruit trinket and running the h-bridge logic off of the 3v output on the trinket while the motor and trinket run on the same battery. (see first pic). Is it possible to somehow use resistors/voltage splitters to run everything off of one battery if I just use the attiny85 on a breadboard (see second pic).
The hbridge I plan to use is Pololu - DRV8838 Single Brushed DC Motor Driver Carrier which is designed to run motors at low power. This is not the h-bridge in the diagram.
The motor comes in a kit that has it running off of 1.5 volts.