Looking for some feedback on my newbie rover build on a Raspberry Pi 3 vb, particularly around power.
Have a simple chassis with four of those generic yellow motor gears (3v-6v I believe). These are driven by two L298n motor controllers and powered by two sets of 4xAA nimh rechargables, so 4.8v per set of two motors (Rpi is not providing power to the L298n boards).
RPi is running off one of the LiPo RPiPowerPack v1.2. This pack is powering the pi, two ultrasonic sensors, a PCA9685 servo board (servos are powered separately by 2xAA batteries), and an IR obstacle detection module.
Next additions to the rover are going to be a RPi camera (powered from the lipo), a simple pan/tilt arm coming off the servo board and AAs, and a simple gripper arm (single servo). Overall aim for the setup is to experiment with autonomous driving, Open CV, a second pi as a wireless touchscreen controller, and other things I haven't yet thought of.
What I'm trying to figure out is if this is a good power setup, using AAs and the LiPo board? Or would I be better off going down the LiPo path to power the motors/servos?
After I have it all running the way I want the next stage will be upscaling to bigger chassis and therefore bigger motors, at which point I'll likely be reconsidering the power setup anyway.