Economy robot single-layer / double-layer wooden tank chassis TT motor 3-9v tracked intelligent car chassis

https://img.xiaodingchui.com/2019/12/VID20191129102031.mp4 Manual: https://www.makerbuying.com/18324 Economy robot single-layer / double-layer wooden tank chassis TT motor 3-9v tracked intelligent car chassis There are two versions of this product: One is single layer One is double Features: Building blocks toy 3-9v wide range voltage TT motor has strong versatility Affordable Can mount a variety of circuit boards Motor welding place is glued and fixed for easy reuse Technical Parameters: Weight: 405g Single-layer chassis size: 203 x155 x63mm Double chassis size: 203 * 155 * 98 Voltage: 3-9v Motor reduction ratio: 48: 1 Motor cable length: 15cm Track width: 4.5cm Track material: hard plastic Hole introduction: arduino uno, L298N, two 18650 battery boxes, sg90 steering gear, mg90s steering gear, our 4th and 5th battery box, etc. Assembly instructions: We send a small screwdriver, which can be assembled, and the motor wire has been welded. Shipping list: A set of tank chassis parts (note that both single and double layers need to be assembled by themselves)