Hello Guys!
I want to recommend an interesting product to you:

"Small crawlers with wire remote control"

This kit is composed of a power unit pulley, a battery box, and a transmission shaft.
It uses the principle of converting electrical energy into kinetic energy.
After the circuit is turned on, the wire control box is used to control the rotation of the deceleration motor to drive the crawling arm to move interactively
So that the crawling crawler shows front and rear crawling status.

The product is a material package, it needs to be made by yourself.
After the production is completed, the small robot can be controlled by the wire controller to move forward or backward on the ground.
Please note: It can only on a parallel rope. Can't climb from low to high.