STM32F103C8T6 ARM STM32 Minimum System Development Board 2PCS vs Official Raspberry Pi Pico W Board

Introduction to Development Boards

When comparing development boards, the STM32F103C8T6 ARM STM32 Minimum System Development Board and the Official Raspberry Pi Pico W Board stand out. At C$12.99, the STM32 board offers a cost-effective solution, while the Raspberry Pi Pico W comes in at C$21.63, providing wireless capabilities. These differences set the stage for a detailed exploration of their features and applications.

Performance Analysis

In terms of performance, the STM32F103C8T6 operates at a frequency of 72MHz, while the Raspberry Pi Pico W boasts a dual-core Arm Cortex-M0+ processor running at 133MHz. This indicates that the Pico W has a significant edge in processing power, which may be beneficial for more complex tasks or applications. Additionally, the Pico W features 264KB of on-chip SRAM compared to the STM32's 20KB, which can enhance its ability to handle larger applications and multitasking.

Connectivity Options

Connectivity is a crucial feature for modern development boards, and here, the Raspberry Pi Pico W has a clear advantage. It comes equipped with built-in WiFi capabilities, allowing for seamless integration into IoT projects. The STM32F103C8T6 does not offer wireless connectivity, relying instead on USB interfaces for communication and power. This difference makes the Pico W more suitable for projects requiring remote connectivity or wireless data transmission.

Input and Output Interfaces

The STM32F103C8T6 provides a variety of I/O resources, with access to its pins, which is fundamental for basic circuit development. It features a total of 24 I/O pins, allowing for substantial interfacing options. In contrast, the Raspberry Pi Pico W offers 26 GPIO pins, including three analogue inputs, and supports multiple communication protocols such as UART, SPI, and I2C. This additional flexibility in interfacing makes the Pico W a more versatile choice for complex projects.

Programming Flexibility

When it comes to programming, both boards offer unique advantages. The STM32F103C8T6 uses the SWD debug interface for programming, which requires a minimum of three wires, making it somewhat more technical for beginners. On the other hand, the Raspberry Pi Pico W supports drag-and-drop programming using mass storage over USB, simplifying the programming process significantly. This ease of use can be appealing for newcomers to microcontroller programming.

Power Supply Requirements

The STM32F103C8T6 operates within a power range of 2.0-3.6V, making it suitable for low-power applications. The Raspberry Pi Pico W has a wider input power range of 1.8-5.5V DC, which adds flexibility in power sourcing. This broader range allows for various power supply options, making the Pico W more adaptable for different projects, particularly those involving battery-powered applications.

Target Applications

The STM32F103C8T6 is ideal for basic circuit projects, providing essential functionalities for those looking to learn and develop fundamental skills. Its low price point makes it accessible for hobbyists and educational purposes. Conversely, the Raspberry Pi Pico W is tailored for more advanced applications, particularly in IoT. Its built-in WiFi capability and extensive peripheral support open up opportunities for creating sophisticated devices that require internet connectivity.

Which should you buy?

Choosing between the STM32F103C8T6 and the Raspberry Pi Pico W largely depends on your project requirements and budget. If you seek a cost-effective board for basic development and learning, the STM32F103C8T6 at C$12.99 is an excellent option. However, if your projects involve IoT applications or require higher processing power and connectivity, the Raspberry Pi Pico W at C$21.63 is the better choice. Ultimately, both boards serve distinct purposes, so your decision should align with your specific needs.