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Introduction

• Power Port: This is the primary power input, where you can connect a DC power adapter (typically 6-12V). This port supplies power to the module, enabling it to provide regulated 3.3V or 5V outputs for your project.
• USB Port: Unlike a standard USB input, this port acts as an output on the MB102, providing 5V to power other USB devices when the module is connected to a DC power source through the Power Port. This can be helpful if you need to power multiple components or devices alongside your main circuit.
• Power Switch & LED: The switch allows you to easily toggle the power on and off, and the LED indicates when the module is active, letting you monitor the power status at a glance.
• Left and Right Jumpers: These jumpers let you independently set each power rail on the breadboard to either 3.3V or 5V. This flexibility is particularly useful if your project includes components with different voltage requirements.
• Berg Header: This header provides direct 3.3V and 5V outputs that can be accessed with jumper wires to power additional components individually.

Step 1: Preparing the Raspberry Pi Pico W with a Test Script

• Connect your Raspberry Pi Pico W to your computer and open your favorite MicroPython editor (such as Thonny).

import machine
import time

# Initialize the onboard LED (usually on pin 25 for Pico W)
led = machine.Pin("LED", machine.Pin.OUT)

# Blink the LED every 0.2 seconds
while True:
    led.on()        # Turn the LED on
    time.sleep(0.2) # Wait for 0.2 seconds
    led.off()       # Turn the LED off
    time.sleep(0.2) # Wait for 0.2 seconds

• Copy the script above and save it as main.py on the Pico W.
• Saving this script as main.py ensures that the script will automatically run whenever the Pico W is powered on. This setup will make it easy to verify if the MB102 is supplying power properly.

Step 2: Connecting the MB102 and Powering the Raspberry Pi Pico W

• In the first image, you can see the MB102 Power Supply Module snapped onto the top of the breadboard. This allows it to directly supply power to the breadboard’s power rails.
• Make sure the voltage jumper is set to 5V on the side of the rail where you plan to connect the Pico W, as the Pico W requires 5V input through its VSYS pin to function.
• You can also plug the DC cable into the device at this point.

• In the second image, we connect the Raspberry Pi Pico W to the breadboard. Attach a jumper wire from the VSYS pin (Pin 39) on the Pico W to the 5V power rail on the breadboard, which is powered by the MB102.
• Then, connect the GND pin (Pin 38) on the Pico W to the ground rail of the breadboard. This completes the power circuit, allowing the Pico W to receive a steady 5V and ground.

• In the third image, the power switch on the MB102 is pressed to the “ON” position. The red LED on the module lights up, indicating that the MB102 is now supplying power to the breadboard rails.

• Finally, in the fourth image, you can see the Raspberry Pi Pico W powered up. The onboard LED should start blinking every 0.2 seconds, as per the script we saved in main.py. This confirms that the MB102 is successfully powering the Pico W.

Conclusion