The development board is a circuit board used for embedded system development, including a series of hardware components such as a central processing unit, memory, input devices, output devices, data pathways/bus, and external resource interfaces.
When it comes to development boards, we must mention the king of cost-effectiveness MCU—the ESP32 development board.
The built-in WiFi and Bluetooth are the biggest highlights! Let’s take a look at the specifications of the ESP32 to see how powerful it is.
● Built-in WiFi and Bluetooth, eliminating the need for additional Ethernet or WiFi modules, with high integration;
● Dual Core CPU, with a main frequency of 80, 160, or 240MHz. This is quite a lot of computing power for a compact chip;
● Advanced Peripheral Interfaces: I2C, SPI, CAN, etc., which can implement many applications, not just a Wi-Fi MCU;
● Ample Memory: The ESP32 includes 512KB of on-chip SRAM and supports external memory, which may be as high as 4 to 8MB depending on the motherboard. This means the ESP32 is suitable for some heavier tasks, such as connecting cameras, recognizing voice, and streaming data from the internet.
The ESP32 is indeed very cost-effective! Not only is it powerful, but it is also inexpensive.Without counting flash, it’s only 9 yuan!
In today’s world, what can you buy for 9 yuan?! But you can get an ESP32, allowing developers to unleash their desire to tinker.
Moreover, under the impact of the pandemic, the semiconductor supply chain is facing shortages, but there are no shortages for the ESP32! No shortages, no price increases, with such high cost-effectiveness, what reason is there not to use it?
3. Nearly Invincible in IoT
Some netizens bluntly say that in the IoT field, the ESP32 might leave no room for STM32 in the future. Although this viewpoint is somewhat biased, it is not entirely unfounded.
The STM32 is a general-purpose chip with broader applications; while the ESP32 is a chip specifically for the Internet of Things, its computing power, startup speed, stability, durability, and the number and types of operable I/O are all sufficient, making it extremely useful.
First, the ESP32’s on-chip resources and pin interfaces are particularly rich, making it more than sufficient for creating various smart devices for IoT scenarios.Currently, the most widely used protocols for IoT products are still Wi-Fi, and in the past two years, BLE and BLE Mesh have also developed rapidly, while Zigbee has gradually weakened. The ESP32 supports both Wi-Fi and Bluetooth, and with its extremely high cost-effectiveness, its prospects are limitless.
Secondly, among embedded developers, the ESP series chips are deeply rooted in people’s hearts, and there are a lot of interesting developer works available on domestic platforms like Taobao/Bilibili and foreign platforms like YouTube.The ESP8266 has too few resources and only supports Wi-Fi. Now that the price of the ESP32 is already very low, if you want to create a smart device, choosing the ESP32 is completely okay.
Thirdly, we are now in the era of the Internet of Things, and the smart devices developed cannot just stay on the development board; we hope to control and access them remotely.However, achieving full-link development of smart device development, connecting cloud services, and mobile device programs at the same time is still quite challenging. The ESP32 has a full-link development framework integrated with cloud services, making it very convenient for developing remote hardware applications, such as creating a gas/flame/formaldehyde detection device at home that pushes messages to your phone when danger is detected.
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