ESP32 vs. Raspberry Pi 3



arduino nano practical application


Welcome to the dynamic world of IoT, where innovation knows no bounds. In this era of interconnected devices, two formidable champions emerge: the ESP32 and the Raspberry Pi 3. These IoT heroes are the driving force behind countless smart projects, transforming the ordinary into the extraordinary.

Our comprehensive guide, “Choosing the Right IoT Hero: ESP32 vs. Raspberry Pi 3,” will be your guiding light on this exciting journey. By the end of this exploration, you’ll not only be well-informed about the capabilities of both contenders but also have a clear path forward for your IoT endeavors.

Understanding ESP32

Processing Power

official esp32 out of box

The ESP32 is armed with a dual-core Tensilica LX6 microprocessor running at 240 MHz, a powerhouse for multitasking and handling complex IoT applications. This processing muscle ensures that your projects run smoothly and efficiently.


esp32 c6 all specifications with connectivity

When it comes to connectivity, the ESP32 is no slouch. It features built-in Wi-Fi and Bluetooth capabilities, including support for both Classic Bluetooth and Bluetooth Low Energy (BLE). This versatility opens doors to a wide range of IoT applications, allowing you to connect to legacy devices and modern Bluetooth peripherals concurrently.


The ESP32 provides an extensive array of GPIO (General Purpose Input/Output) pins, each with multiple functions. These pins act as the nerves of your IoT project, facilitating interactions with sensors, actuators, and other external components. The ESP32’s flexibility knows no bounds.


With 520KB of SRAM and 4MB of Flash memory, the ESP32 offers ample space for your program and data storage. This proves invaluable for projects with large codebases or data buffers, ensuring efficient execution.


Security is paramount in the IoT realm, and the ESP32 takes it seriously. It supports various encryption and authentication protocols, safeguarding your data’s integrity and confidentiality.

Power Efficiency

all power modes in esp32 infographic

Designed for power efficiency, the ESP32 offers multiple low-power modes. These modes enable you to extend battery life significantly, making it an excellent choice for battery-powered IoT devices.

Understanding Raspberry Pi 3

Processing Power

The Raspberry Pi 3 is a single-board computer powered by a quad-core ARM Cortex-A53 processor clocked at 1.2 GHz. While it may not match the ESP32’s clock speed, it’s more than capable of handling diverse IoT applications.


Raspberry Pi 3 features built-in Wi-Fi and Ethernet connectivity, making it a versatile option for various IoT projects. Its support for standard networking protocols ensures seamless integration into your IoT ecosystem.


With a 40-pin GPIO header, the Raspberry Pi 3 offers a plethora of options for connecting external devices. These pins are your gateway to interfacing with sensors, displays, motors, and more.


Raspberry Pi 3 memory

The Raspberry Pi 3 comes equipped with 1GB of RAM, providing sufficient memory for most IoT projects. It handles multitasking with ease, allowing you to run multiple applications concurrently.


While the Raspberry Pi 3 is primarily designed as a single-board computer, it can still be secured using standard software security practices. However, it may require additional measures for security-conscious IoT applications.

Power Efficiency

Power consumption can vary based on usage, but the Raspberry Pi 3 is relatively power-efficient, making it suitable for many IoT scenarios.

Head-to-Head Comparison

Now, let’s delve into a detailed comparison of these two IoT heroes:

Processing Power

The ESP32’s dual-core processor offers a significant advantage for multitasking and handling demanding applications, making it a compelling choice for complex projects. Raspberry Pi 3’s quad-core processor is no slouch either, providing ample power for diverse IoT applications.


Both contenders offer Wi-Fi connectivity, but the ESP32’s added support for Bluetooth, including BLE, enhances its adaptability for various projects. If Bluetooth connectivity is essential for your IoT application, the ESP32 takes the lead.


The ESP32’s extensive GPIO pins are a boon for projects requiring multiple sensors and actuators. However, Raspberry Pi 3’s 40-pin GPIO header offers substantial flexibility and compatibility with a wide range of devices.


The ESP32 provides more onboard memory, making it suitable for projects with extensive codebases and data storage requirements. Raspberry Pi 3’s 1GB of RAM is ample for most IoT applications but may require efficient resource management for larger projects.


The ESP32 offers advanced security features, making it a robust choice for projects demanding stringent data protection. Raspberry Pi 3 can be secured through software measures, but additional precautions may be necessary for highly secure IoT applications.

Power Efficiency

The ESP32 excels in power efficiency with its multiple low-power modes, making it ideal for battery-powered IoT devices that require extended battery life. Raspberry Pi 3 is power-efficient but may not offer as many power optimization options.

When to Choose ESP32

Home Automation Masterpiece: If you’re envisioning an all-encompassing home automation system where lights, appliances, and security devices harmonize effortlessly, the ESP32’s processing power and connectivity capabilities make it the ideal choice. Its Bluetooth support allows you to control devices from your smartphone, giving your home a futuristic touch.

Wireless Environmental Monitoring: In remote environmental monitoring scenarios, such as weather stations or agricultural applications, the ESP32 shines. Its capacity to handle data streams and communicate over Wi-Fi or Bluetooth enables efficient data gathering and real-time insights into your environment.

When to Choose Raspberry Pi 3

Versatile IoT Workstation: Raspberry Pi 3 is your go-to choice when you need a versatile IoT workstation. Its quad-core processor and ample RAM handle various tasks simultaneously. It’s perfect for projects involving data processing, multimedia, or even serving as a mini-server.

Educational and Maker Projects: Raspberry Pi 3 is an excellent platform for educational purposes and DIY maker projects. Its robust community and extensive documentation provide ample learning resources for beginners and advanced users alike.

IoT Prototyping: When you need a robust prototyping platform for IoT applications and want to experiment with various sensors and devices, Raspberry Pi 3’s GPIO pins offer flexibility and ease of use.


As we wrap up our exploration, you now possess the knowledge to make an informed choice between the ESP32 and Raspberry Pi 3 for your IoT projects. Your decision hinges on project requirements, processing power, connectivity needs, and power efficiency considerations.

Remember, both these IoT heroes are capable of remarkable feats, and the right choice depends on your unique project goals. Whether you’re crafting a smart home masterpiece or embarking on a data-driven IoT journey, your hero awaits your command.

So, equip yourself with the power of knowledge, choose wisely, and let your IoT adventures begin.

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One response to “ESP32 vs. Raspberry Pi 3”
  1. […] Choosing the Right IoT Hero: ESP32 vs. Raspberry Pi 3: A comprehensive blog post that juxtaposes two renowned open-source platforms, the ESP32 and Raspberry Pi 3, within the context of IoT applications. […]

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