The D1 Mini V2 NodeMCU 4M Bytes Development Board Based on ESP8266 is a popular, mini-sized Wi-Fi microcontroller board designed for compact Internet of Things (IoT) applications, smart home…
The D1 Mini V2 NodeMCU 4M Bytes Development Board Based on ESP8266 is a popular, mini-sized Wi-Fi microcontroller board designed for compact Internet of Things (IoT) applications, smart home sensors, and wireless control nodes. Built around the Espressif ESP-8266EX 32-bit RISC processor operating at 80 MHz (up to 160 MHz), it delivers robust 802.11 b/g/n Wi-Fi connectivity in a tiny 34.2mm × 25.6mm form factor.
This V2 version features 4MB of SPI flash memory (32 Mbits), allowing ample storage for complex web servers, Over-The-Air (OTA) updates, and Lua/MicroPython scripts or Arduino IDE sketches. The board includes an onboard Micro-USB interface paired with a CH340 USB-to-UART bridge IC for seamless power supply and serial programming directly from a PC.
Equipped with 11 Digital I/O pins (all supporting PWM, I2C, SPI, and OneWire) and 1 Analog Input pin (0V - 3.2V range via an onboard resistor divider), the D1 Mini V2 seamlessly integrates with sensors, displays, and relay shields. It operates on a 3.3V internal logic level and includes an onboard 3.3V LDO regulator accepting power from Micro-USB or external 5V power sources.
| Core Chipset | Espressif ESP-8266EX 32-bit RISC SoC @ 80 MHz / 160 MHz |
|---|---|
| Memory Capacity | 4MB (32 Mbits) external SPI Flash memory |
| Wireless Connectivity | 2.4 GHz Wi-Fi (802.11b/g/n) with WPA/WPA2 security |
| USB Interface | Micro-USB port with onboard CH340 USB-to-TTL Serial Bridge IC |
| Digital I/O Pins | 11 GPIO pins (D0 - D8, TX, RX), all capable of Interrupt, PWM, I2C, and OneWire |
| Analog Input | 1 Analog Pin (A0) supporting 0V to 3.2V max input (10-bit ADC) |
| Power Options | Powered via Micro-USB (5V), 5V pin, or 3.3V power pin |
| Logic Level | 3.3V DC logic operational voltage |
| Modular Header Kit | Includes standard male, short female, and long female pin header strips for stacked shield usage |
| Software Ecosystem | Fully compatible with Arduino IDE, NodeMCU Lua, MicroPython, and ESP-IDF |
What is the operating voltage?
1 Analog Pin (A0) supporting 0V to 3.2V max input (10-bit ADC).
Which interface does it use?
Micro-USB port with onboard CH340 USB-to-TTL Serial Bridge IC.
Is it compatible with Arduino and ESP8266?
Yes. It works with Arduino, ESP8266, NodeMCU projects.
Can I buy the D1 Mini V2 NodeMCU 4M Bytes in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
