Rover number 5 is my first robot for outdoor operations. It is the prototype for a global explorer. During test drives I want to find the weak points of the construction before its successor can start a relay "race" around planet earth.
See construction plan for dimensions
Base plate for microcontroller and peripherals.
with Arduino Bootloader
Analog inputs, battery management
Battery cut off transistor
Double H bridge
Geared DC motors
Total current of 3 motors must be below 2A when using L298N bridges
5V voltage regulator
1x 4.7μF (electrolytical)
USB camera or Raspberry Pi camera module
R5 is made of 6mm poplar plywood. The wheels are from an old RC car with the dimensions 12 x 5.5cm.
Sand grains locked the gears quickly during test drives. The transmission must be sealed.
Brushless motors grant a higher reliability and the current is lower whenever motors get stalled.
The window must be larger to give the camera a wider field of view.
The capacity should be higher to increase operating time.
the solar cells on top of the rover must be used to charge all batteries (not only one out of two lead acid batteries).