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Raspberry Pi Pico with MicroPython - GPIO Mastery

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Overview
Introduction to GPIO Pins
Digital I/O and PWM
Analog I/O (ADC)
UART, I2C, and SPI
Interfacing with Servos and Ultrasonic Range Finders
Ground Pins
Summary and Review

Pin Numbering

Understand the Raspberry Pi Pico's pin numbering system and the role of each pin.

By Kevin McAleer,    5 Minutes

Overview

Welcome to Lesson 2 of the Raspberry Pi Pico with MicroPython - GPIO Mastery course. In this lesson, we will discuss the Raspberry Pi Pico’s pin numbering system and the role of each pin.

Course Content

In this lesson, you will learn:

  • The Raspberry Pi Pico’s pin numbering system
  • The role of each pin and how to identify them

The Raspberry Pi Pico has several types of GPIO pins, including digital I/O, PWM, ADC, I2C, and SPI pins. Each pin has a specific function and can be used to connect different electronic components to the board.

Raspberry Pi Pico’s Pin Numbering System

The GPIO pins on the Raspberry Pi Pico are numbered from 0 to 29. The pins are arranged in two rows on the board, with the odd-numbered pins on the left row and the even-numbered pins on the right row. The pins are numbered in a way that reflects their basic functions and groupings.

Identifying Pins on the Raspberry Pi Pico

To identify the pins on the Raspberry Pi Pico, we can refer to the pinout diagram in the datasheet or on the board itself. The pinout diagram shows the function and number of each pin, as well as its physical location on the board.

Pico Pinouts

In addition, the Raspberry Pi Pico has labels on the board that indicate the function of each pin. For example, the pins labeled “GP0” to “GP28” are digital I/O pins, and the pins labeled “ADC0” to “ADC3” are ADC pins.

Pinouts

Pin Number Type Capabilities
GP0 Digital I/O General purpose I/O, can be used as input or output
GP1 Digital I/O General purpose I/O, can be used as input or output
GP2 Digital I/O General purpose I/O, can be used as input or output
GP3 Digital I/O General purpose I/O, can be used as input or output
GP4 Digital I/O General purpose I/O, can be used as input or output
GP5 Digital I/O General purpose I/O, can be used as input or output
GP6 Digital I/O General purpose I/O, can be used as input or output
GP7 Digital I/O General purpose I/O, can be used as input or output
GP8 Digital I/O General purpose I/O, can be used as input or output
GP9 Digital I/O General purpose I/O, can be used as input or output
GP10 Digital I/O General purpose I/O, can be used as input or output
GP11 Digital I/O General purpose I/O, can be used as input or output
GP12 Digital I/O General purpose I/O, can be used as input or output
GP13 Digital I/O General purpose I/O, can be used as input or output
GP14 Digital I/O General purpose I/O, can be used as input or output
GP15 Digital I/O General purpose I/O, can be used as input or output
GP16 Digital I/O General purpose I/O, can be used as input or output
GP17 Digital I/O General purpose I/O, can be used as input or output
GP18 Digital I/O General purpose I/O, can be used as input or output
GP19 Digital I/O General purpose I/O, can be used as input or output
GP20 Digital I/O General purpose I/O, can be used as input or output
GP21 Digital I/O General purpose I/O, can be used as input or output
GP22 Digital I/O General purpose I/O, can be used as input or output
GP26 Digital I/O General purpose I/O, can be used as input or output
GP27 Digital I/O General purpose I/O, can be used as input or output
GP28 Digital I/O General purpose I/O, can be used as input or output
GP29 Digital I/O General purpose I/O, can be used as input or output
GP14 ADC Analog-to-digital converter input
GP15 ADC Analog-to-digital converter input
GP16 ADC Analog-to-digital converter input
GP17 ADC Analog-to-digital converter input
GP18 PWM Pulse-width modulation output
GP19 PWM Pulse-width modulation output
GP20 PWM Pulse-width modulation output

Key Results

After you have completed this lesson, you will be familiar with the Raspberry Pi Pico’s pin numbering system. You will be able to identify and locate each pin, which will allow you to correctly connect components and devices to the appropriate pins in your projects.

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