micro:bit Circular RGB LED Expansion Board

This round DFRobot expansion board carries 24 WS2812 RGB LEDs in a circle and turns the BBC micro:bit into a clock, timer, wheel of fortune or light pendant. With the buzzer on the board it becomes a tomato timer, with the microphone a light display for music. Ports P0 and P1 are brought out with cables, sensors of the Boson and Gravity series fit there.

Note: The LEDs need more current than the micro:bit supplies. After uploading the program, power the board via its USB port or the PH2.0 battery connector with 3.5 to 5 V, otherwise the LEDs light up only dimly or partly. The micro:bit is not included.

Recommended Accessories:

• BBC micro:bit V2

Features:

• 24 WS2812 RGB LEDs in a circle, 16 million colours
• Buzzer and microphone on the board
• Ports P0 and P1 with cables for Boson and Gravity modules
• Power via USB, power bank or battery on the PH2.0 connector
• Flat design, suitable for wearing
• Programming with MakeCode

Application Examples:

• Clock, timer and tomato timer
• Wheel of fortune and games
• Light display for music with the microphone

Documentation:

• Wiki DFRobot ROB0150
• Example tomato timer, MakeCode (DFRobot wiki)
• Microsoft MakeCode for micro:bit

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: ROB0150
• Supply voltage: 3.5 to 5 V
• LEDs: 24× WS2812
• Buzzer: 1
• Microphone: 1
• Ports: 2× IO (P0, P1), 1× PH2.0 power connector, 1× USB power connector
• Dimensions: 83 × 83 × 10 mm
• Weight: 44 g

Scope of Delivery:

• 1× micro:bit Circular RGB LED Expansion Board
• 2× sensor cable PH2.0 3-pin, 20 cm
• 5× screw M3 × 4