Raspberry Pi Pico W

The Raspberry Pi Pico and Pico W are based on the fast, efficient, and cost-effective dual-core ARM Cortex M0+ RP2040 microcontroller chip, which runs at up to 133 MHz and features 264 KB of SRAM as well as 2 MB of flash memory. In addition to the generous memory offering, the Pico and Pico W provide many GPIO pins and popular peripheral interface modules such as ADC, SPI, I²C, UART, PWM, timer modules, a hardware debug interface, and an internal temperature sensor. The Raspberry Pi Pico W also includes an integrated Infineon CYW43439 Bluetooth and Wi-Fi chipset. At the time of writing this book, the Bluetooth firmware was not yet available. However, Wi-Fi is fully supported at 2.4 GHz using the 802.11b/g/n protocols.

This book is an introduction to using the Raspberry Pi Pico W in conjunction with the MicroPython programming language. The Thonny development environment (IDE) is used in all of the over 60 functional and tested projects, covering the following topics:

• Installing MicroPython on the Raspberry Pi Pico using a Raspberry Pi or a PC
• Timer interrupts and external interrupts
• Projects with analog-to-digital converters (ADC)
• Using the internal temperature sensor and external sensor chips
• Data logging projects
• Projects with PWM, UART, I²C, and SPI
• Using Bluetooth, Wi-Fi, and apps to communicate with smartphones
• Projects with digital-to-analog converters (DAC)

All projects are tried and tested. They can be implemented on both the Raspberry Pi Pico and the Raspberry Pi Pico W, with Wi-Fi-based topics only functioning on the Pico W. Basic knowledge of programming and electronics is required to follow the projects. Short descriptions, block diagrams, detailed schematics, and complete MicroPython program listings are provided for all projects.