Let’s see whats the difference between ESP32 and ESP8266? Both ESP32 and ESP8266 are WiFi based SOC (Systems on Chop). Both have 32-bit processor, ESP32 is dual core 80Mhz to 240MHz CPU and ESP8266 is 160MHz single core processor. In depth comparison is given below.
ESP32 vs ESP8266
|CPU||Xtensa Dual-Core 32-bit LX6 with 600 DMIPS||Xtensa Single-core 32-bit L106|
|WiFi Speed||802.11n up to 150 Mbps||Up to 72.2 Mbps|
|WiFi Protocol||802.11 b/g/n (2.4 Ghz)||802.11 b/g/n (2.4 Ghz)|
|DAC||Two 8-bit DAC Channels||NO|
|ADC||12-Bit SAR||10-Bit SAR
|ADC Channels||8 Channels||Single Channel|
|ADC Reference V||1100mV||1100mV|
|Touch Sensor||YES (8-Channels)||NO|
|Hall effect sensor||YES||NO|
|SRAM||520 kB (8 kB of SRAM in RTC)||RAM size < 50 kB|
|FLASH (external)||4Mbytes (also available higher)||4Mbytes|
|ROM||448 kB of ROM for booting and core functions||No programmable ROM|
|Network Protocols||IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT||IPv4, TCP/UDP/HTTP/MQTT|
|Peripheral Interface||UART/SDIO/SPI/I2C/I2S/IR Remote Control
|UART/SDIO/SPI/I2C/I2S/IR Remote Control
|Operating Temperature Range||–40°C ~ +85°C||–40°C ~ 125°C|
|Operating Voltage||2.5V ~ 3.6V||2.5V ~ 3.6V|
|Operating Current||Average: 80 mA||Average value: 80 mA|
|Price||$4 – $10||$3 – $6|
What is ESP32 module?
ESP32-WROOM-32 is a powerful, generic Wi-Fi+BT+BLE MCU module that targets a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding.
At the core of this module is the ESP32-D0WDQ6 chip*. The chip embedded is designed to be scalable and adaptive. There are two CPU cores that can be individually controlled, and the CPU clock frequency is adjustable from 80 MHz to 240 MHz. The user may also power off the CPU and make use of the low-power co-processor to constantly monitor the peripherals for changes or crossing of thresholds. ESP32 integrates a rich set of peripherals, ranging from capacitive touch sensors, Hall sensors, SD card interface, Ethernet, high-speed SPI, UART, I2S and I2C.
The integration of Bluetooth, Bluetooth LE and Wi-Fi ensures that a wide range of applications can be targeted, and that the module is future proof: using Wi-Fi allows a large physical range and direct connection to the internet through a Wi-Fi router, while using Bluetooth allows the user to conveniently connect to the phone or broadcast low energy beacons for its detection. The sleep current of the ESP32 chip is less than 5 μA, making it suitable for battery powered and wearable electronics applications. ESP32 supports a data rate of up to 150 Mbps, and 20.5 dBm output power at the antenna to ensure the widest physical range. As such the chip does offer industry-leading specifications and the best performance for electronic integration, range, power consumption, and connectivity. The operating system chosen for ESP32 is freeRTOS with LwIP; TLS 1.2 with hardware acceleration is built in as well. Secure (encrypted) over the air (OTA) upgrade is also supported, so that developers can continually upgrade their products even after their release.
What is ESP32 devKit board?
The DOIT Esp32 DevKit v1 is one of the development board created by DOIT to evaluate the ESP-WROOM-32 module. It is based on the ESP32 microcontroller that boasts Wifi, Bluetooth, Ethernet and Low Power support all in a single chip. ESP32 DevKit contains ESP32-WROOM, 3.3V power supply required for ESP32 and USB to serial converter for easy programming. With this board and a USB cable you can start your development of ESP32.
What is ESP8266 module?
What is ESP8266 NodeMCU Kit?
The Development Kit based on ESP8266, integates GPIO, PWM, IIC, 1-Wire and ADC all in one board. Power your developement in the fastest way combinating with NodeMcu Firmware.
NodeMCU is basically a development board for ESP8266, it contains 3.3V power supply required for ESP8266 and USB to serial converter for easy programming. With this board and a USB cable you can start your development of ESP8266.
- Getting Started with ESP8266
- Pinout ESP8266
- ESP8266 Installation in Arduino IDE
- ESP32 Development tool installation
- ESP32 GPIO pins