DIY Smartphone Bluetooth Controlled 2WD Car Chassis Kit


4x wheels (44mm) + 2x DC N20 motors + Rechargeable Battery with USB Charger + Bluetooth controller + App + Mechanics + Tools


Upgradable smartphone-controlled car chassis kit.

Build your 4-wheel car chassis parts or put wheels on anything and enjoy a fun play!


  • Use your smartphone or tablet to control your own made chassis;
  • High quality materials;
  • Add additional elements;
  • Use hot glue or double-sided tape to attach motors to anything – from cardboard to your favorite toy car.
Control with your smartphone or tablet

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SKU: TMK-2WD Categories: ,
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Follow the Assembly Book to make a Platform: 

2wd wheels kit platform assembly


Detailed Contents

  • 1x X3-FBI board – Bluetooth motor controller;
  • 2x cables – with JST connectors, to connect motors and controller;
  • 2x DC Motors – N20 type, with JST connectors, L=16mm shaft, 75:1 gear ratio, 400 rpm shaft output at 6 V;
  • 1x Battery – LiPo, 3.7 V, 250 mAh;
  • 1x USB Battery Charger;
  • 4x Wheels – 2x driving wheels with D-shaft holes (to mount directly on the motor) and 2x idler wheels with O-shaft holes (3.2mm), 44 mm rubber tires;
  • Totem mechanics and Tools for building chassis frame.


Quick Start – Controller/Receiver 

The kit uses the following functions of the Board:

  • Light Bar – to indicate the battery charge level;
  • Speaker – makes a sound when successfully connected to the App;
  • Battery input;
  • Up to 4 DC motor channels;
  • Antenna.

You can also add additional elements, like Servo Motors, to your project.


2WD car chassis kit control board


Follow the schematics.

2WD car chassis kit control board schematics


Connecting to the App

We suggest using a smartphone or a tablet to control. Follow those easy steps to connect Chassis to your device:

  1. Download Totem App available on the Google Play or IOS App Store.



  1. Connect the power cable (see the schematics). The lights on the board will indicate the battery charge level.


  1. Two running lights show that Board is waiting for your device to connect.



  1. Open the Totem App and press “Connect” button. A sound and one running light indicate that you have successfully connected to the Board.


  1. Make sure to fully charge the battery for your longer play. Simply connect the Battery to the USB Charger and plug it into any USB Charging device (like PC or your Smartphone charger).

That was it, have fun!


Upgrading Ideas

  • Totem Pre-Cut Maker Kit – perfect addition to build on top of the chassis;
  • Totem Maker Kit – perfect for building larger car projects;
  • Add Servo or other motors up to 0.5 A (not included in the Kit) for more complex and fun projects;
  • Use hot glue or double-sided tape to attach motors to anything. Build from cardboard, use old toy or even 3D print your own idea.


X3-FBI board


Totem robots (including 2WD car) use our developed X3-FBI electronics board to control motors and other accessories. Here are some examples of what can be made with it:

collage of cars examples with x3-fbi board


Follow the Assembly Book to make a Platform: 

2wd wheels platform



2WD Totem smartphone controlled chassis2WD Totem smartphone controlled chassis 2

2wd4wdslink shot 280x280
Spider bot with X3-FBI boardmini trooper 280x280hockey car

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