Data Sheet

ManualsBrandsKitronik Manualsmicro:bit AccessoriesKitronik All-in-one Robotics Board for micro:bit

Board Layout:

All-in-one Robotics Board for BBC micro:bit

www.kitronik.co.uk/5641

The All-in-one Robotics Board enables the BBC micro:bit (connected via a

standard card slot connector) to drive 4 motors (or 2 stepper motors) and 8

servos. Coupled with 17 other I/O expansion points, this means the BBC micro:bit

can very easily become the core of a whole variety of robotics projects.

The Robotics Board features 2 Dual H-Bridge Motor Driver ICs (capable of driving

2 standard motors or 1 stepper motor each) and 8 servo outputs (capable of

driving standard and continuous rotation servos), all controlled from the BBC

micro:bit using the I2C protocol via a 16-channel driver IC. The Link header

breaks out all the usable pins from the BBC micro:bit, and is designed to allow

2.54mm pitch pin header to be easily soldered into place. The 17 available I/O

pins allow other input devices, for example, sensors, or output devices, such as

ZIP LEDs, to be added to the board. The I2C communication lines are also broken

out (Pins 19 & 20), which means other I2C compatible devices can also be added

to the board and controlled by the BBC micro:bit. (Note: I2C devices controlled

by the same BBC micro:bit MUST have different addresses. The default address

can be adjusted – see Page 3 for details).

Power is provided via either a terminal block or servo-style connector, and the

board then produces a regulated 3.3V supply which is fed into the 3V and GND

connections to power the connected BBC micro:bit, removing the need to power

the BBC micro:bit separately. The 3V and GND pins are also broken out on the

Link header, which means external devices can also be powered (see Page 3 for

the electrical specifications).

Edge Connector

Servo Outputs (x8)

Link Header

Terminal Block

Motor Outputs (x4)

Terminal Block

Power Connection

Servo-style Power

Connection

3.3mm

Mounting Hole

3.3mm

Mounting Hole

3.3mm

Mounting Hole

3.3mm

Mounting Hole

I2C Address

Adjustment Pads

Examples: For some further ideas of what you could do with the Robotics Board,

go to: http://www.kitronik.co.uk/5641

Inserting a BBC micro:bit:

To use the Robotics Board, the

BBC micro:bit should be

inserted firmly into the edge

connector, either way round.

If the Link header is being

used, the BBC micro:bit LED

display should be facing them

(see PCB text relating to this).

Summary of content (4 pages)

PAGE 1
All-in-one Robotics Board for BBC micro:bit www.kitronik.co.uk/5641 Terminal Block Power Connection 3.3mm Mounting Hole Link Header Power is provided via either a terminal block or servo-style connector, and the board then produces a regulated 3.3V supply which is fed into the 3V and GND connections to power the connected BBC micro:bit, removing the need to power the BBC micro:bit separately.
PAGE 2
All-in-one Robotics Board for BBC micro:bit www.kitronik.co.
PAGE 3
All-in-one Robotics Board for BBC micro:bit www.kitronik.co.uk/5641 Electrical Information Operating Voltage (Supply via Terminal Blocks or Servo Power Connector) +3.0V – 10.8V (Recommended: 6.0V – 10.8V) Regulated Voltage Supply (for BBC micro:bit) +3.3V Servo and Motor Voltage Supply Voltage Max Current (All Servos and Motors) 10A (Absolute max., 12A) Servo Output Connections 8 (Provide supply voltage to servos) Motor Output Connections 4 [2 stepper motors] (1.
PAGE 4
All-in-one Robotics Board for BBC micro:bit www.kitronik.co.uk/5641 Microsoft MakeCode Blocks Editor Code The program shown to the right was created using the Microsoft MakeCode Blocks Editor for the BBC micro:bit. It demonstrates the control of stepper motors, normal motors and servos, all of which can be connected to the All-in-one Robotics Board.