How many pins NodeMCU has?

How many pins NodeMCU has?

17 GPIO pins
ESP8266 NodeMCU has 17 GPIO pins which can be assigned to various functions such as I2C, I2S, UART, PWM, IR Remote Control, LED Light and Button programmatically.

How many GND pins are available in the NodeMCU?

The ESP8266 NodeMcu has 16 GPIO pins and one analog input pin shown in the image bellow. However only 10 of these GPIO pins can be used for digital input and output operations.

Does NodeMCU have 5V output?

NodeMCU 1.0 and 1.1 The VIN pin not directly connected to the USB’s 5V supply (at least on the LoLin v3 board). It is always on, and always 5V (or whatever your USB port happens to provide – 4.75v – 5.25v). You must never ever connect VIN to a power source and connect the USB socket.

How many pins are there in ESP?


ESP-01 module by Ai-Thinker with ESP8266EX SoC
Manufacturer Espressif Systems
Memory 32 KiB instruction, 80 KiB user data
Input 17 GPIO pins
Power 3.3 V DC

Which is better Arduino or NodeMCU?

In common the NODEMCU is based on the ESP8266 microprocessor have a very low current consumption between 15 µA and 400 mA which can be further decreased with the deep sleep mode activated to 0.5 µA. The current consumption is then a factor 70000 higher in deep sleep mode for the Arduino Uno with 35 mA.

What is the range of NodeMCU?

NodeMCU Technical Specifications

Official NodeMCU NodeMCU Carrier Board
ADC Range 0-3.3V 0-3.3V
UART/SPI/I2C 1 / 1 / 1 1 / 1 / 1
WiFi Built-In 802.11 b/g/n 802.11 b/g/n
Temperature Range -40C – 125C -40C – 125C

What is the output voltage of NodeMCU?

NodeMCU Technical Specifications

Official NodeMCU NodeMCU Carrier Board
Operating Voltage 3.3V 3.3V
Input Voltage 4.5V-10V 4.5V-10V
Flash Memory/SRAM 4 MB / 64 KB 4 MB / 64 KB
Digital I/O Pins 11 11

Can I give 5V to ESP8266?

There’s a few things you have to look out for when using an ESP8266: The most important thing is that it runs at 3.3V, so if you connect it to a 5V power supply, you’ll kill it.

What is the use of the TX pin of ESP?

Step 1: ESP8266-01 Pins The GPIO0 and GPIO2 determine what mode the module starts up in and the TX/RX pins are used to program the module and for Serial I/O, commonly used for debugging. GPIO0 and GPIO2 need to have pull-up resistors connected to ensure the module starts up correctly.

How many pins are there on a NodeMCU board?

A typical NodeMCU board (if it is based on the original NodeMCU Devkit design) has 30 pins. In this, 8 pins are related to power and 2 are reserved. The remaining 20 pins are associated with pins of ESP-12E Module. A brief description of the pins is given in the following table.

What is the output voltage of a 128 pin NodeMCU?

To use this feature you’ll use the function dacWrite (pin, value), the value can be between 0 and 255, so we’d expect 128 to give us approximately 1.6 volts, which is half of the 3.2 max output voltage. So there you have it, a explaination of the most commonly used features on the ESP8266 and ESP32 based nodeMCUs.

What are the features of nodemcu ESP8266 pinout?

NodeMCU ESP8266 Specifications & Features 1 Microcontroller: Tensilica 32-bit RISC CPU Xtensa LX106 2 Operating Voltage: 3.3V 3 Input Voltage: 7-12V 4 Digital I/O Pins (DIO): 16 5 Analog Input Pins (ADC): 1 6 UARTs: 1 7 SPIs: 1 8 I2Cs: 1 9 Flash Memory: 4 MB 10 SRAM: 64 KB

Where does the power come from on a NodeMCU?

Power delivered on VIN is regulated through the onboard regulator on the NodeMCU module – you can also supply 5V regulated to the VIN pin 3.3V pins are the output of the onboard voltage regulator and can be used to supply power to external components.