The board features analog input interfaces, allowing users to connect analog sensors and devices, such as temperature sensors and potentiometers.
| I2C interface | The board provides an I2C interface, enabling users to connect I2C devices, such as LCD displays and EEPROMs. |
The board offers an SPI interface, allowing users to connect SPI devices, such as SD cards and flash memory.
The board features a UART interface, enabling users to connect serial devices, such as GPS modules and serial displays.
The board provides power supply interfaces, allowing users to connect external power sources and batteries.
Technical Specifications
3.3V, 5V
100mA
Compatible with Raspberry Pi 4B, 3B, and 3B+
65mm x 25mm x 12mm
20g
Applications
| The Raspberry Pi GPIO Multi-function Expansion Board with Fixed Screw Nylon Column Jumper Cap is suitable for a wide range of applications, including |
Robotics and automation
Home automation and IoT projects
Industrial control and monitoring
Prototyping and development
Education and research
Conclusion
The Raspberry Pi GPIO Multi-function Expansion Board with Fixed Screw Nylon Column Jumper Cap is a versatile and reliable expansion board that simplifies the development and prototyping process for Raspberry Pi users. Its compact design, multiple functions, and durable construction make it an ideal choice for a wide range of applications and projects.
Raspberry Pi GPIO Multi-function Expansion Board DocumentationOverviewThe Raspberry Pi GPIO Multi-function Expansion Board is a versatile add-on module designed for Raspberry Pi 4B, 3B, and 3B+ models. This board provides a convenient way to expand the GPIO capabilities of your Raspberry Pi, making it an ideal solution for various IoT projects. The board features a fixed screw nylon column jumper cap, allowing for secure and reliable connections.FeaturesCompatible with Raspberry Pi 4B, 3B, and 3B+ models
40-pin GPIO header with screw terminal blocks for easy connection
Supports multiple functions, including digital input/output, analog input, I2C, SPI, and UART
Fixed screw nylon column jumper cap for secure connections
Breadboard-friendly design for easy prototypingPinout DiagramThe following diagram illustrates the pinout of the Raspberry Pi GPIO Multi-function Expansion Board:
```
+---------------------------------------+
| Raspberry Pi |
| (40-pin GPIO header) |
+---------------------------------------+
|
|
v
+---------------------------------------+
| Screw Terminal Blocks | Function |
| (40-pin) | |
+---------------------------------------+
| 1 | GND | Ground |
| 2 | 3V3 | 3.3V Power |
| 3 | 2 | SDA (I2C) |
| 4 | 5 | SCL (I2C) |
| 5 | 4 | GPIO 4 (SPI) |
| 6 | GND | Ground |
| 7 | 15 | GPIO 15 (UART) |
| 8 | 16 | GPIO 16 (UART) |
| 9 | 3V3 | 3.3V Power |
| 10 | 18 | GPIO 18 (SPI) |
| 11 | GND | Ground |
...
| 40 | GND | Ground |
+---------------------------------------+
```
Code Examples### Example 1: Using the Expansion Board with PythonIn this example, we will use the Raspberry Pi GPIO Multi-function Expansion Board to read analog input from a potentiometer connected to the board. We will use the `RPi.GPIO` library in Python to interact with the GPIO pins.Hardware RequirementsRaspberry Pi 4B/3B/3B+
Raspberry Pi GPIO Multi-function Expansion Board
Potentiometer (connected to the board's analog input pins)
Breadboard and jumper wiresPython Code
```python
import RPi.GPIO as GPIO
import time# Set up GPIO mode
GPIO.setmode(GPIO.BCM)# Define the analog input pin
analog_input_pin = 17# Set up the analog input pin as an input
GPIO.setup(analog_input_pin, GPIO.IN)while True:
# Read the analog input value (0-1023)
analog_value = GPIO.input(analog_input_pin)
print("Analog Input Value:", analog_value)
time.sleep(0.1)
```
### Example 2: Using the Expansion Board with I2CIn this example, we will use the Raspberry Pi GPIO Multi-function Expansion Board to communicate with an I2C device, such as an LCD display. We will use the `smbus` library in Python to interact with the I2C bus.Hardware RequirementsRaspberry Pi 4B/3B/3B+
Raspberry Pi GPIO Multi-function Expansion Board
I2C device (e.g., LCD display)
Breadboard and jumper wiresPython Code
```python
import smbus# Set up the I2C bus
bus = smbus.SMBus(1)# Define the I2C device address
device_address = 0x27# Write a command to the I2C device
bus.write_byte(device_address, 0x01)# Read data from the I2C device
data = bus.read_byte(device_address)
print("Received Data:", data)
```
These examples demonstrate the versatility of the Raspberry Pi GPIO Multi-function Expansion Board and its ability to interface with various devices and protocols. The board's screw terminal blocks provide a secure and reliable connection, making it an ideal solution for IoT projects.