ESP32 (38 Pin) WiFi + Bluetooth NodeMCU-32 Development Board
This is an ESP32 development board. It features WiFi+Bluetooth connectivity onboard and keys. ESP 32 Development board is based on the ESP WROOM32 WIFI + BLE Module. It’s a low-footprint, minimal system development board powered by the latest ESP-WROOM-32 module and can be easily inserted into a solderless breadboard.
This NodeMCU ESP32 contains the entire basic support circuitry for the ESP-WROOM-32, including the USB-UART bridge, reset- and boot-mode buttons, LDO regulator, and a micro-USB connector. Every important GPIO is available to the developer.
ESP32 is already integrated with an antenna and RF balun, power amplifier, low-noise amplifiers, filters, and power management module. The entire solution takes up the least amount of printed circuit board area. This NodeMCU ESP32 board is used with 2.4 GHz dual-mode Wi-Fi and Bluetooth chips by TSMC 40nm low power technology, power and RF properties best, which is safe, reliable, and scalable to a variety of applications.
Pin Diagram of Node MCU 38 Pins:
ESP32 Pin Description
ESP32 to 8266 Comparison:
- ESP32 is a powerful device that runs through a 32 bit dual-core processor CPU with a clock speed of 160MHz to 240MHz while ESP8266 is a single core CPU with a clock speed of around 80MHz.
- As we know the ESP32 has higher speed compared to ESP8266 it consumes more power.
- ESP8266 comes with 16 General Purpose Input Output (GPIO) Pins and other GPIO, UART, I2C, I2S and ADC Pins. While ESP32 has more than 16 GPIO pins along with UART, I2C, I2S, ADC, DAC and CAN Pins.
- ESP32 comes with Bluetooth and WIFI together onboard whereas the ESP8266 comes with only WIFI.
ESP8266 vs. ESP32
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Features
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ESP8266
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ESP32
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Microcontroller
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Xtensa Single-core 32-bit L106
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Xtensa Dual-Core 32-bit LX6 with 600 DMIPS
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Frequency (MHz)
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80
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160 to 240
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Bluetooth
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No
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Bluetooth 4.2 and BLE
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SRAM
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No
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Yes
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GPIO Pins
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17 (11 Usable Pins)
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38 (32 Usable Pins)
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PWM
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8 Channels
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16 Channels
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ADC
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10-bit
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12-bit
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CAN
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No
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Yes
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Power Consumption
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Approx. 70.5 mA
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Approx. 80~90mA
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Working Temperature
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-40ºC to 125ºC
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-40ºC to 125ºC
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Price
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Comparatively lesser than ESP32
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Comparatively higher than ESP8266
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Applications:
- Universal low-power IoT sensor hub
- Home automation.
- Mesh network.
- Industrial wireless control.
- Sensor networks.
- Smart Socket.
- Wi-Fi speech recognition device.