The 52Pi T-Type GPIO Extension Board (Manufacturer Part ID: EP-0089) is a versatile GPIO expansion module designed specifically for Raspberry Pi boards. It provides a convenient way to access and expand the GPIO pins of the Raspberry Pi, making it easier to connect sensors, modules, and other peripherals. The T-shaped design ensures a compact and organized layout, ideal for prototyping and development.

• Prototyping with Raspberry Pi GPIO pins
• Connecting multiple sensors and modules
• Educational projects and learning GPIO programming
• Building IoT devices and smart systems
• Simplifying access to GPIO pins for breadboard use

The following table outlines the key technical details of the 52Pi T-Type GPIO Extension Board:

The 52Pi T-Type GPIO Extension Board replicates the Raspberry Pi's 40-pin GPIO header. Below is the pinout configuration:

For the full pinout, refer to the Raspberry Pi GPIO documentation, as the extension board mirrors the standard layout.

1. Connect the Extension Board: Attach the 52Pi T-Type GPIO Extension Board to the Raspberry Pi's 40-pin GPIO header. Ensure proper alignment to avoid damaging the pins.
2. Mount on a Breadboard: Place the extension board onto a standard 830-point breadboard. The T-shaped design allows easy access to all GPIO pins on both sides of the breadboard.
3. Connect Peripherals: Use jumper wires to connect sensors, modules, or other components to the GPIO pins as needed.
4. Power the Raspberry Pi: Supply power to the Raspberry Pi, which will also power the extension board.

• Voltage Levels: The GPIO pins operate at 3.3V. Avoid connecting components that require higher voltages directly to the GPIO pins.
• Pin Mapping: Double-check the pin mapping to ensure correct connections. Incorrect wiring can damage the Raspberry Pi or connected components.
• Static Precautions: Handle the board with care to avoid static discharge, which can damage the GPIO pins.
• Avoid Overloading: Do not exceed the current limits of the GPIO pins. Use external power supplies for high-power components.

Below is an example Python script to blink an LED connected to GPIO17 (pin 11) using the 52Pi T-Type GPIO Extension Board:

import RPi.GPIO as GPIO import time

GPIO.setmode(GPIO.BCM)

LED_PIN = 17

GPIO.setup(LED_PIN, GPIO.OUT)

try: while True: GPIO.output(LED_PIN, GPIO.HIGH) # Turn the LED on time.sleep(1) # Wait for 1 second GPIO.output(LED_PIN, GPIO.LOW) # Turn the LED off time.sleep(1) # Wait for 1 second except KeyboardInterrupt: # Clean up GPIO settings when the script is interrupted GPIO.cleanup()

• Connect the LED's anode (long leg) to GPIO17 (pin 11) and the cathode (short leg) to a resistor (e.g., 330Ω), which is then connected to GND.
• Install the RPi.GPIO library if not already installed: sudo apt-get install python3-rpi.gpio.

1. Extension Board Not Detected:

   • Ensure the board is properly aligned with the Raspberry Pi's GPIO header.
   • Check for bent or damaged pins.

2. Components Not Working:

   • Verify the wiring and connections to the GPIO pins.
   • Ensure the correct GPIO pin numbers are used in the code.

3. Short Circuits:

   • Inspect the breadboard for accidental short circuits caused by misplaced wires or components.

4. Overheating:

   • Avoid overloading the GPIO pins. Use external power supplies for high-power devices.

• Use a multimeter to check for continuity and proper voltage levels on the GPIO pins.
• Test the Raspberry Pi GPIO pins without the extension board to rule out issues with the Raspberry Pi itself.
• Refer to the Raspberry Pi GPIO pinout diagram to ensure correct connections.

By following this documentation, users can effectively utilize the 52Pi T-Type GPIO Extension Board for their Raspberry Pi projects.