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ESP32 (38 Pin) WiFi + Bluetooth NodeMCU-32 Development Board
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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
|
Features |
ESP8266 |
ESP32 |
|
Microcontroller |
Xtensa Single-core 32-bit L106 |
Xtensa Dual-Core 32-bit LX6 with 600 DMIPS |
|
Frequency (MHz) |
80 |
160 to 240 |
|
Bluetooth |
No |
Bluetooth 4.2 and BLE |
|
SRAM |
No |
Yes |
|
GPIO Pins |
17 (11 Usable Pins) |
38 (32 Usable Pins) |
|
PWM |
8 Channels |
16 Channels |
|
ADC |
10-bit |
12-bit |
|
CAN |
No |
Yes |
|
Power Consumption |
Approx. 70.5 mA |
Approx. 80~90mA |
|
Working Temperature |
-40ºC to 125ºC |
-40ºC to 125ºC |
|
Price |
Comparatively lesser than ESP32 |
Comparatively higher than ESP8266 |
Applications:
- Universal low-power IoT sensor hub
- Home automation.
- Mesh network.
- Industrial wireless control.
- Sensor networks.
- Smart Socket.
- Wi-Fi speech recognition device.
Package Includes:
- 1 x ESP32 Development Board(38 Pin)
Specifications:
| SPI Flash |
32Mbit(default) |
| Current | 80 mA |
| Supply Voltage | 2.2 V ~ 3.6 V |
| Dimensions | 5 x 4 x 3cms |
| Weight |
15 grams |
ADDITIONAL RESOURCES
1. Does NodeMCU ESP32 have Bluetooth?
- The NodeMCU ESP-32S is an Expressif ESP32 based microcontroller and has Wifi, and dual mode Bluetooth, all in a single chip.
2. What is the difference between NodeMCU ESP8266 and NodeMCU ESP32?
- ESP32 is the successor of ESP8266 and has extra features such as an extra CPU core, faster Wi-Fi and Bluetooth 4.0 (BLE) The ESP32 also has more GPIO pins as compared to the ESP8266.
3. On the ESP32, how do I enable Bluetooth?
- To use Bluetooth on the ESP, a bluetooth sketch will need to be uploaded to the ESP via your PC
4. How many Bluetooth connections can the ESP32 support?
- The ESP32 Bluetooth LE can connect to up to 9 client devices. But it is advised to keep this number under 3.
5. Can the ESP32 support both Wi-Fi and Bluetooth?
- It is possible to simultaneously have both WiFi and Bluetooth connection enabled, but it is not recommended to do so as both the protocols use the same onboard antenna.
