Mobile and ROS robots

Nexbit

A micro:bit robot car with ultrasonic and line sensors; kits above the Starter add WonderCam AI vision.

micro:bit
Suggested for primary
Suggested for secondary

Nexbit is a small robot car controlled by a micro:bit V2 and programmed through micro:bit. It carries a glowy ultrasonic sensor for measuring distance and avoiding obstacles, a 4-channel line follower with an adjustable sensitivity knob, and a rechargeable lithium battery with a USB charging port. In every kit except the Starter Kit, a WonderCam AI vision module with its own screen adds colour, number and face recognition, waste-card sorting, target tracking, vision line following, and road sign and traffic light recognition. The Smart Traffic Kit and the Intelligent Transportation Kit add a map and props for traffic and transport projects.

Zeta42 is an authorised Hiwonder partner in the Middle East.

Configurations

Choose how it ships.

Model: Nexbit Starter Kit · Nexbit Standard Kit · Nexbit Smart Traffic Kit · Nexbit Intelligent Transportation Kit
Controller: Without micro:bit V2 · With micro:bit V2

What it does

Built for.

WonderCam AI vision
Outside the Starter Kit, the WonderCam module adds an HD camera and a 2.0-inch screen that frames what it recognises. A hinge bracket sets its angle, and built-in learning algorithms cover colours, numbers, faces, tags and lines.
Glowy ultrasonic sensor
The ultrasonic sensor measures distance for obstacle avoidance and lights up in different colours as real-time feedback.
4-channel line follower
The line follower has an adjustable sensitivity knob for reliable line following.
Traffic projects
With WonderCam, Nexbit recognises road signs for going straight, turning and U-turns, and reads traffic lights. The Smart Traffic Kit adds intersection judgement, and the Intelligent Transportation Kit adds autonomous transport.
Control and expansion
The iOS and Android app shows how to assemble the robot and drives it remotely, and it also supports Handlebit remote control. I2C, GPIO and 4-pin ports on the base board take extra sensors and a gripper.

Where it is used

Applications.

Primary and lower secondary coding lessons on micro:bit
A first look at AI vision: colour, face and number recognition
Model traffic projects with road signs and traffic lights
Sensor projects: distance measuring, obstacle avoidance and line following

Videos

See it run.

Specifications

The full sheet.

Product size: 99 × 105 × 150 mm
Product weight: About 245g
Material: Metal bracket
Controller: micro:bit V2
Programming software: micro:bit + iOS / Android app
Input: 4-channel line follower, glowy ultrasonic sensor, infrared receiver; WonderCam vision module (all kits except the Starter Kit)
Output: RGB light, buzzer, servo port, I2C port, GPIO port and 5 × 5 LED matrix
Display: 2.0-inch LCD screen, 320 × 240 (on the WonderCam module)
Power supply: 1 × 1800mAh 18650 LiPo battery
Control method: Mobile app control, handle control
Protection method: Overcurrent protection, low voltage protection
WonderCam processor: Kendryte K210
WonderCam camera: 2 megapixel
WonderCam functions: Facial recognition, image classification, feature learning, color recognition, vision line following, tag recognition, number recognition and landmark recognition