Solar powered RC car / rover - Kura class

Powered by single N20 geared DC motor, differential gears, Ackermann steering, suspensions, just need a little more power. This model can run on pavement and other outdoor surfaces with all power from solar panels.

Video of testing on floor:
https://youtube.com/shorts/YJAJVswCeEA

Printed parts

wheel, wheelflange x4
gear3, gear4, suspension_hub x2
steerholder x2, one mirrored
everything else x1

Additional parts

N20 geared DC motor, 300 rpm at 6V. Or, use the 100 rpm version to get more torque at slower speed.
Micro servo
3mm stainless steel rods, Grind a flat face at the end of the rods to accept set screws.
M3 screws, various length
M3 x 4 mm set screws for the wheel
M3 x 3 mm set screws for the differential gear. I cut a longer M3 screw to make a set screw.
Springs from ballpoint pens x4
Rubber strips for wheel traction
Solar panel, 9V x 100 mA x2
Capacitors, maybe 4 x 10000 uF 16V (I have not used any yet)
Step down converter for 5V output
Controller and wireless module with low power. I used STM8 breakout board and NRF24L01.
I made the body from cardboard because it is easier and faster to make.