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What is Tumbller？

ELEGOO Tumbller is a newly designed self-balancing robotic car kit which has multiple functions and offers you a great hands-on experience. It's also a DIY kit that helps kids foster creativity and inspires imagination.

Product Features

- Tumbller is a newly designed robotic car kit for Arduino® projects, which has multiple fascinating functions like IR control, auto-follow, obstacle avoidance, bouncing mode, and glowing in different LED colors. You can also control it with your mobile phone using our new ELEGOO BLE TOOL APP.

- Tumbller comes with a well-designed illustrated tutorial, which shows you how to assemble the kit step by step and how to play with all the interesting functions.

- Compatible with Arduino®: You can modify the default codes and upload your own program using the IDE compatible with Arduino®, and work with the reserved pins to add more sensors.

- STEM kit for everyone: Tumbller is easy to assemble and suitable for kids to have hands-on experiences and learn basic programming knowledge. Professional robotic hobbyists can also enjoy it by customizing and adding more functions to this kit.

Stand up by itself

Press the command key, and it will tilt forward. Press the key again, and it will stand up instantly and keep balance by itself.

Obstacle-Avoidance

Tumbller will avoid obstacles ahead of it automatically with the ultrasonic sensors on the platform by sending waves and calculating the distance. Keep your car away from collision and enjoy the fun.

Auto-follow

If there is an obstacle in front, Tumbller will move forward or backward with the obstacle.

If there is an obstacle on the left or right side, Tumbller will turn left or right with obstacle.

Glowing

Press the command key, Tumbller will light up one light effect.Press it again, it will switch to another one.

There are six light effects and you can switch according to your preferences.

ELEGOO BLE TOOL APP

Enter the language list in the top left corner, you can choose the language which you prefer.

Click Tumbller to enter the control page.

The issues to be aware of when using Tumbller:

- The screw on the coupling might get loose after long-term operation. Please pay attention to tighten it.

- When using DIY Control on the App, the message to make Tumbller turn right is "i" instead of "r" (we wrote "r" in our paper manual).

- When assembling the expansion board, if you find the infrared sensors on the sides are bent, please twist them a bit and make sure they stand up vertically on the board so they can work properly.

- When you pick up Tumbller vertically, the wheels will still rotate. After tilting Tumbller ±27°, the rotation will stop.

- Tumbller cannot be used in places where sunlight or light is too bright, as strong brightness will affect the sensors.

- The LED will flash red when the battery is running out of power.

- The USB interface is only used for burning programs. When burning a program, please turn off the battery to prevent interference.