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ESP32 Development Board
● ESP32 development board introduction
The ESP32 development board is a low-cost, low-power system-on-chip microcontroller circuit board that integrates WIFI and dual-mode Bluetooth, it is mainly used to develop and test the WIFI + Bluetooth function.
Wi-Fi supports a wide range of communication connections, and also supports direct connection to the Internet through routers; while Bluetooth allows users to connect mobile phones or broadcast BLE Beacon for signal detection.
The sleep current of the ESP chip in the ESP32 development board is less than 5mA, making it suitable for battery-powered wearable electronics. The data transmission rate supported by the ESP32 development board is up to 150Mbps, and after passing through the power amplifier, the output power can reach 22dBm, which can realize a wide range of wireless communication. Therefore, this ESP32 development board has leading technical specifications and excellent performance in terms of high integration, wireless transmission distance, power consumption and network connectivity.
The operating system of the ESP32 development board is freeRTOS with LWIP and built-in TLS1.2 with hardware acceleration. Moreover, the ESP32 chip also supports OTA encryption upgrade, and developers can continue to upgrade after the product is released. As a low-cost WIFI/Bluetooth combo radio, the ESP32 development board is very popular not only among hobbyists, but also among IoT developers.
ESP32 series development board
● The relationship between ESP32 chip, ESP32 module and ESP32 development board
● ESP32 development board product series
ESP32 development board series products support Wi-Fi one-key network configuration, voice wake-up, voice recognition and cloud platform access and other functions, suitable for the development of various audio and IoT applications, such as Wi-Fi and Bluetooth speakers, voice remote control, Voice robots, smart toys, and voice-enabled smart home devices.
ESP32-LyraT development board
The ESP32-LyraT development board is a development board for the voice interaction market. It uses the ESP32-WROVER-E module. The module contains a dual-core processor and 4.5 MB of running memory. Speakers, intelligent voice robots, voice story machines, and voice-activated devices for smart home, smart office and other scenarios.
ESP-EYE development board.
The ESP-EYE development board is an image recognition and voice processing development board. It has an onboard ESP32 chip, integrates a 2-megapixel camera, a digital microphone, and has a rich storage of 8 MB PSRAM and 4 MB flash. It supports Wi-Fi image transmission and Micro USB debugging and ESP32 development board power supply, can be widely used in application development in the field of intelligent Internet of Things.
● ESP32 development board advantages
√1.The ESP32 development board mainly has the advantages of high performance, low esp32 development board power consumption, high integration, small esp32 development board size and stable performance.
√2.ESP32 development board has built-in WIFI and Bluetooth chips, supports Wi-Fi protocol: supports 802.11 b/g/n/d/e/i/k/r and other protocols, the speed is up to 150 Mbps and Bluetooth protocol: supports Bluetooth v4.2 complete standard , including Bluetooth Classic (BR/EDR) and Bluetooth Low Energy (BLE).
√3.The ESP32 development board has a 32-bit dual-core processor (CPU) (one core for high-speed connection; one core for independent application development), the normal working speed of the CPU is 80 MHz, and the highest is 240 MHZ.
√4.The ESP32 development board has 520KB of on-chip SRAM memory, and also supports up to 8 MB of external memory, with a large memory.
√5.The ESP32 development board has a wealth of peripheral interfaces: such as GPIO, ADC, DAC, SPI, I²C, I²S, UART and other commonly used interfaces.
● ESP32 development board application field
The ESP32 development board is mainly used to debug the functions of the ESP32 module, and what is really embedded in the product is the debugged ESP32 module.
The ESP32 module is an IoT SOC module. It has onboard wi-fi and Bluetooth (traditional + BLE), rich peripheral interfaces, dual-core CPU, and a frequency of 240M, which can meet almost all needs in the IoT field. With its powerful computing power and abundant memory, the ESP32 module realizes functions such as voice interaction, intelligent audio, and predictable maintenance equipment based on machine learning.
The ESP32 module has the characteristics of low energy consumption, multiple open source development environments and libraries, etc., to meet the needs of various developers. The ESP32 module combines WIFI and Bluetooth functions and is the most widely used in the field of IoT:
1. Smart home: smart sweepers, smart curtains, Bluetooth speakers, etc.
2. Medical: ECG detector, smart medicine box, pulse oximeter, etc.
3. Industrial automation: industrial robots, etc.
