Why is ESP32 Better than Raspberry Pi Modules?
Embedded modules are found everywhere now. With the advancement of science, embedded modules have reached the rank which can hardly be overemphasised. The current machinery, computers, and other devices such as robots, control systems, etc operate on embedded modules.
Different embedded modules and embedded systems have been developed by engineers that work under different conditions depending upon the users (which may be a hobbyist or a professional developer) requirements. Some of the most used embedded modules include:
- BeagleBone Boards
- ESP32/ ESP8266 Modules
- STM32 Microcontrollers
- Programmable Logic Controllers (PLC) Modules
- Raspberry Pi Modules
- Arduino, etc.
While it is an important component in the technology world, embedded systems are often discussed by its users. If you are among the hobbyists of embedded modules, you might have thought about which embedded module to use or which is a better one? Let’s consider the two most important embedded modules, i.e. ESP32 and Raspberry Pi Modules.
Differences in Raspberry Pi and ESP32 Module
Raspberry Pi and ESP32 Modules both are popular in the technology world. These are significant in programming and electronic projects, but both are necessarily different in different factors like programming, hardware, etc. Before comparing both of these modules, let us know the basics of both of these modules.
ESP32 Module
ESP32 is a widely used embedded module having a variety of uses in the technology world. It uses a low-cost development board having Bluetooth and Wi-Fi chips embedded in it. It has a dual-core microprocessor with ESP-WROOM-32 LX6 that makes it variable in its uses. ESP32 projects has a great scope in developing Internet of Things (IoT) based applications since it has both of the wireless technologies (i.e. Wi-Fi and Bluetooth).
Some of the features of ESP32 include:
- Operating voltage: 2.2V to 2.6V
- Output Current: more than 500mA
- Operating temperature: 40°C to 125°C.
- Dual-core processor that runs independently (one core at 240 MHz and the other at 240MHz)
- 520 KB of SRAM
- Hall effect sensor
- 34 GPIO Pins
- Flash memory: 4 MBs
ESP32 is priced low compared to other embedded modules. It also works on low-power systems having Wi-Fi and Bluetooth compatibility (as mentioned previously). ESP32 modules have a central Tensilica Xtensa dual core processor that runs on 160MHz frequency (but can be overclockable to 240MHz). It doesn’t come with built-in USB ports but some users program ESP32 with USB-UART. Similarly, ESP32 does not have onboard storage, but it supports SPI flash and MicroSD. For enhanced performance, ESP32 can also be programmed using ESP-IDF, Arduino IDE, Lua, Javascript, etc.
Raspberry Pi
Like ESP32, Raspberry Pi is also a cost-effective credit card-sized board. This single board computer has a wide range of functions, such as basic computer applications, programming learning, simple DIY projects, etc. Its developers specifically designed Raspberry Pi as an accessible and affordable platform enabling hobbyists to learn and experiment different aspects of embedded systems. Like a typical computer, there are features such as built-in USB port, good processor, storage, HDMI Port, etc that makes Raspberry Pi a good choice for most hobbyists. Many users integrate Raspberry Pi for home automation, gaming console, or a media centre. It can also work on operating systems like Linux based Raspbian, Windows 10, Ubuntu, etc.
Raspberry Pi offers an accessible way for different programmers to experiment with electronics. Due to its versatility in function, Raspberry Pi targets a wide community of enthusiasts, beginners, developers, and hobbyists. It is a popular platform which inspires people to learn possible aspects of technology deeper.
Raspberry Pi Vs ESP32
While it is always a search for better, both Raspberry Pi and ESP32 targets different users. Following are some distinct features of Raspberry Pi to ESP32.
1- Power Consumption
Raspberry Pi consumes more energy as compared to ESP32 modules. ESP32 is more suitable for users searching for energy-sensitive applications or battery operated functions. Therefore, ESP32 operates in most IoT devices where users require power efficiency.
2- Processing Power & Memory
In terms of power capability and memory, Raspberry Pi is a more efficient choice. If you are using Raspberry Pi, then you might perform more multitasking, get substantial computing power, and run a full-fledged operating system. For basic tasks such as controlling output or reading sensors, ESP32 is a better choice since it runs on low power consumption which makes it a cost-effective option.
3- Size & Forms
As mentioned earlier, ESP32 is a basic embedded module; therefore, it is compact and comes in different forms (depending upon its variants). On the other hand, Raspberry Pi is a credit card size embedded module, which occupies more space as compared to ESP32. Therefore, if you are working on an automation project which has limited space, ESP32 is a better choice.
4- GPIO Pins and Interference
Both of these boards have numerous GPIO pins integrated in it. However, ESP32 has 18 analogue input channels that make it more effective in interpreting analogue sensors. If you want to read analogue inputs on Raspberry Pi, you have to install an external ADC.
5- Low-Level Hardware Access
To access hardware-level functionality, ESP32 offers more ease. Therefore, it is more preferred to Raspberry Pi and has a fine control over hardware resources. The simple yet powerful design of ESP32 is therefore chosen by many users.
6- Built-in Ports
ESP32 does not have built-in ports such as for USB, HDMI, etc. Whereas Raspberry Pi has them; therefore, it targets users required thost ports for their projects. However, ESP32 can access USB based projects since users can have USB-UART access.
7- Multimedia and Graphics
Raspberry Pi has a great advantage for users dealing with graphics and multimedia. Higher-end versions of Raspberry Pi (such as Raspberry Pi 4) come with great graphics processing to excel in multimedia applications. Complex applications, graphics-intensive tasks, video playback, etc. can be handled greatly by Raspberry Pi, and many users use Raspberry Pi 4 as a graphic card in different computers and laptops. However, ESP32 lacks these functionalities.
The Bottom Line
Both ESP32 and Raspberry Pi 4 are great discoveries in the field of electronics. However, it depends upon the users’ requirements on what to choose for their project. Both these embedded modules are popular for different types of projects and is choosen by different programmers, hobbyists, and other users.
