DIY T400 Aluminum Alloy Metal Wall-E Tank Chassis Robot Crawler TrackThere are three kinds you can choose:A: Chassis + WheelB: Chassis + Wheel + Espduino kitC: Chassis + Wheel + NodeMcu Lua kitIntroduction: This Aluminum alloy Wall-E tank chassis is designed with novelty、 beautiful shape、and has a stability and firmness. The two motors are very strong with measure velocity Hall sensors. This high quality tank chassis can be forward、 back ward flexible whirl. Wall-E tank chassis can be applied to the remote controlled wireless monitoring、 especially on the dangerous place. Feature: Name: Wall-E tank chassisMaterial: Aluminum alloySize: 270*260*140mm (length*width*high)Motor working voltage: 9-12V Note: This item just includes the tank chassis、 not containing the electronics. Package included: 1 x Aluminum alloy chassis2 x Driving wheel2 x Induction wheel8 x Bearing wheel2 x Motor(where、 VM and GM are connected to motor、 V and G are the powering line for sensor、 S1 and S2 are the output signal)