Full Feature THETA Robot for BBC micro:bit

The THETA Robot is a feature-packed, circular robot platform designed for BBC micro:bit. Developed in conjunction with ROBOTIXLAB in Greece, it arrives ready-assembled with multiple sensors, dual motors, and extensive expansion capability.

A dedicated onboard microprocessor handles all the extra features beyond the micro:bit's capacity. Standard 4tronix expansion connectors let you plug in accessories like a 5×5 RGB matrix, OLED screen, or RoboFace in place of the included ultrasonic sensor. A MakeCode extension makes it easy to program all features using block coding.

Key Features

• Dual Motors – Independent, fully software-controllable motors
• 145 RGB FireLEDs – Integrated addressable LEDs with included diffuser cover
• Ultrasonic Distance Sensor – Included and pluggable
• Line Following Sensors – Integrated for path tracking
• Light Sensors – Integrated ambient light detection
• Pen Holder – Mounted at the axis of rotation for drawing
• Analog Input – Onboard potentiometer
• Sound Output – Separate onboard buzzer
• I2C Connector – Supports peripherals with both 3V and 5V available
• Button Connector – Duplicate the micro:bit A and B buttons externally
• Extra I/O – 4 additional signals accessible via the onboard microprocessor
• Charger Port – For rechargeable batteries only (requires specific charger, see instructions)
• Power – 4× AA batteries (alkaline or rechargeable)
• Diameter – 140mm
• Height – 45mm (excluding ultrasonic, cover, and micro:bit)
• Weight – 145g (excluding ultrasonic, cover, batteries, and micro:bit)

Ideal For

• Robotics education with BBC micro:bit
• Block coding with MakeCode
• Line following and obstacle avoidance projects
• Creative drawing robots

Package Contents

• 1× Assembled THETA Robot
• 2× Wheels (push-fit onto axles)
• 1× USB cable for programming
• 1× Ultrasonic distance sensor
• 1× Sheet plastic cover and fixings