Useless Bouncing Car
thingiverse
This DIY robot car is built around a low-cost, high-efficiency motor system sourced from AliExpress. When you flip the switch to the other setting, the DC motor suddenly reverses direction of rotation. It skillfully navigates through obstacles and keeps going until you cut off the power supply. If the car starts moving in the wrong direction, simply turn it upside down or swap the battery connections. Secure the 9-volt battery using two tie wraps or double-sided adhesive tape for a snug fit. Check out this cool robot in action at https://youtu.be/G0m8ZMd5w48.
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