Micro:Bit T-type GPIO board

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Micro

Bit T-type GPIO Board

The Micro

Bit T-type GPIO Board is a versatile and convenient expansion board for the BBC micro

bit, offering a range of features and interfaces to enhance the capabilities of the micro:bit. Its compact design, easy assembly, and built-in power supply make it an ideal choice for IoT projects and prototyping applications.

Key Features

T-type Interface: The board features a T-type interface, providing a secure and easy-to-use connection to the micro:bit.
GPIO Expansion: The board exposes the micro:bit's GPIO pins, allowing users to connect and control external devices, sensors, and peripherals.
Built-in Power Supply: The board includes a built-in power supply, which can be used to power external devices connected to the board.
Voltage Regulator: The board features a voltage regulator, ensuring a stable voltage supply to the connected devices.
Multiple I/O Ports: The board provides multiple I/O ports, including digital, analog, and I2C interfaces, enabling users to connect a variety of devices.
Compact Design: The board's compact design makes it ideal for use in space-constrained projects and IoT applications.
Easy Assembly: The board is easy to assemble and disassemble, allowing users to quickly connect and disconnect devices.

Operating Voltage

3.3V

GPIO Pins

20 (accessible through the T-type interface)

Analog Inputs

Digital Inputs/Outputs	10
I2C Interface	1

Power Supply

Built-in voltage regulator

Dimensions

50mm x 40mm x 15mm

Pin Configuration

Micro: Bit T-type GPIO Board Pinout Explanation
The Micro:Bit T-type GPIO board is a compact, versatile expansion board designed specifically for the BBC micro:bit, providing easy access to the microcontroller's GPIO pins. This documentation will guide you through the pinout explanation of the Micro:Bit T-type GPIO board, detailing each pin's function and how to connect them.
Pinout Structure:
The Micro:Bit T-type GPIO board features 21 pins, arranged in three rows:
Top Row ( Pins 1-7)
1. 3V:
Description: 3.3V power output from the micro:bit.
Connection: Connect to devices that require a 3.3V power supply.
2. GND:
Description: Ground pin.
Connection: Connect to the ground pin of your device or circuit.
3. P0:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
4. P1:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
5. P2:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
6. P8:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
7. P12:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
Middle Row (Pins 8-14)
8. P3:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
9. P4:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
10. P5:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
11. P6:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
12. P7:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
13. P9:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
14. P10:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
Bottom Row (Pins 15-21)
15. P11:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
16. P13:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
17. P14:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
18. P15:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
19. P16:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
20. P19:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
21. P20:
Description: Digital input/output pin.
Connection: Use as a digital input or output for controlling devices or reading sensor data.
Connecting the Pins:
When connecting devices or circuits to the Micro:Bit T-type GPIO board, ensure:
Use suitable jumper wires or connectors to connect devices to the pins.
Observe the correct polarity when connecting components (e.g., LEDs, motors).
Refer to the device or circuit documentation for specific connection requirements.
Be cautious when handling the pins and connectors to avoid damage or electrical shock.
By following this pinout explanation and connection guidelines, you can effectively utilize the Micro:Bit T-type GPIO board to expand the capabilities of your BBC micro:bit projects.

Code Examples

Micro:Bit T-type GPIO Board Documentation

Overview

The Micro:Bit T-type GPIO board is a compact, breadboard-friendly expansion board designed specifically for the BBC micro:bit microcontroller. It provides a convenient way to access and utilize the micro:bit's GPIO pins, making it ideal for various IoT projects and prototyping applications.

Features

21 GPIO pins broken out into 3 rows of 7 pins each
 Compatible with both 3.3V and 5V systems
 Supports digital input/output, analog input, I2C, SPI, and UART communication protocols
 Onboard power and ground rails for convenient prototyping

Pinout

The Micro:Bit T-type GPIO board has the following pinout:

| Row 1  | Row 2  | Row 3  |
| ---   | ---   | ---   |
| P0    | P8    | P16   |
| P1    | P9    | P17   |
| P2    | P10   | P18   |
| GND   | GND   | GND   |
| 3.3V  | 3.3V  | 3.3V  |
| P3    | P11   | P19   |
| P4    | P12   | P20   |
| P5    | P13   | P21   |
| P6    | P14   |       |
| P7    | P15   |       |

Code Examples

### Example 1: Digital Input with Push Button

In this example, we'll use the Micro:Bit T-type GPIO board to read the state of a push button connected to pin P0.

Code (MicroPython)
```python
from microbit import

# Set pin P0 as an input
pin0 = pin0.setup(pin.IN)

while True:
    # Read the state of the push button
    if pin0.read_digital():
        print("Button pressed!")
    else:
        print("Button not pressed!")
    sleep(100)
```
Hardware Connection

Connect a push button between pin P0 and GND on the Micro:Bit T-type GPIO board.
 Connect the micro:bit to the GPIO board.

### Example 2: Analog Output with LED

In this example, we'll use the Micro:Bit T-type GPIO board to control the brightness of an LED connected to pin P1.

Code (MicroPython)
```python
from microbit import

# Set pin P1 as an analog output
pin1 = pin1.setup(pin.OUT, pin.ANALOG)

while True:
    # Output a PWM signal to control the LED brightness
    for i in range(0, 1024, 1):
        pin1.write_analog(i)
        sleep(10)
```
Hardware Connection

Connect an LED to pin P1 and GND on the Micro:Bit T-type GPIO board, with a 220 resistor in series with the LED.
 Connect the micro:bit to the GPIO board.

Note: These examples are just a starting point, and you can modify them to suit your specific project requirements. Make sure to check the micro:bit's documentation for more information on how to use its GPIO pins and features.