Description
🚀 ESP8266 D1 Mini V2 – Compact WiFi Development Board
The ESP8266 D1 Mini V2 is a powerful, ultra-compact WiFi microcontroller board based on the ESP8266 chip. Pre-loaded with NodeMCU Lua firmware and fully compatible with Arduino IDE, this board is the perfect solution for IoT projects, home automation, wireless sensors, and smart device development. Its small form factor and rich features make it ideal for both beginners and professionals.
✨ Key Highlights
- 🔌 Built-in WiFi (802.11 b/g/n) – Seamless wireless connectivity
- ⚡ Arduino Compatible – Program using Arduino IDE
- 📡 NodeMCU Lua Support – Pre-flashed firmware ready to use
- 🔧 11 Digital I/O Pins – PWM, I2C, SPI, UART support
- 💾 4MB Flash Memory – Ample storage for projects
- 📱 OTA Updates – Over-the-air programming capability
- 🔋 Low Power Consumption – Perfect for battery-operated projects
- 💻 Micro USB Programming – Easy plug-and-play setup
📊 Technical Specifications
| Specification |
Details |
| 🖥️ Microcontroller |
ESP8266 (Tensilica L106 32-bit) |
| ⚙️ Clock Speed |
80MHz (up to 160MHz) |
| 📶 WiFi Standard |
802.11 b/g/n (2.4GHz) |
| 💾 Flash Memory |
4MB |
| 🔢 Digital I/O Pins |
11 (All pins support PWM) |
| 📈 Analog Input |
1 pin (A0, 0-3.3V, 10-bit ADC) |
| ⚡ Operating Voltage |
3.3V |
| 🔌 Input Voltage |
5V via Micro USB / 3.3-5V via pins |
| 💡 Current per I/O Pin |
12mA (Max) |
| 🔄 USB to Serial Chip |
CH340G |
| 📏 Dimensions |
34.2mm x 25.6mm |
| ⚖️ Weight |
~3g |
🔌 Pin Configuration
| Pin Name |
GPIO |
Functions |
| D0 |
GPIO16 |
Wake from Deep Sleep, No PWM/I2C |
| D1 |
GPIO5 |
PWM, I2C (SCL) |
| D2 |
GPIO4 |
PWM, I2C (SDA) |
| D3 |
GPIO0 |
PWM, Flash Button |
| D4 |
GPIO2 |
PWM, Built-in LED, Boot Mode |
| D5 |
GPIO14 |
PWM, SPI (SCK) |
| D6 |
GPIO12 |
PWM, SPI (MISO) |
| D7 |
GPIO13 |
PWM, SPI (MOSI) |
| D8 |
GPIO15 |
PWM, SPI (CS), Boot Mode |
| TX |
GPIO1 |
UART (TX) |
| RX |
GPIO3 |
UART (RX) |
| A0 |
ADC0 |
Analog Input (0-3.3V) |
🎯 Perfect For
| Application |
Description |
| 🏠 Smart Home |
Control lights, fans, appliances via WiFi |
| 🌡️ IoT Sensors |
Temperature, humidity, motion sensor projects |
| 📊 Data Logging |
Remote monitoring and cloud data upload |
| 🤖 Robotics |
Wireless robot control and automation |
| 🔔 Notifications |
Email, SMS, push notification systems |
| 🌐 Web Server |
Host web interfaces and REST APIs |
| 🔐 Security |
Door locks, alarm systems, surveillance |
| 📡 MQTT Projects |
Home Assistant, Node-RED integration |
📦 Package Contents
- ✅ 1x ESP8266 D1 Mini V2 Board
- ✅ Pre-soldered male headers (optional: check variant)
- ✅ Anti-static packaging
💻 Programming Support
| Platform |
Support |
| 🔷 Arduino IDE |
✅ Full Support |
| 🐍 MicroPython |
✅ Supported |
| 📜 Lua (NodeMCU) |
✅ Pre-flashed |
| ⚙️ ESP-IDF |
✅ Native SDK |
| 🌐 PlatformIO |
✅ Supported |
⚠️ Important Notes
- ⚡ Operating voltage is 3.3V – Do not connect 5V directly to GPIO pins
- 🔌 CH340G USB driver may be required for some systems
- 📌 Some pins have special functions (boot mode) – check pinout before use
- 🔋 Deep sleep current: ~20µA (requires D0 connected to RST)
- 📡 WiFi range: Up to 100m (open space)
🛠️ Getting Started
- 📥 Install CH340G Driver (if needed for your OS)
- 💻 Setup Arduino IDE – Add ESP8266 board manager URL
- ⚙️ Select Board – Choose “LOLIN(WEMOS) D1 R2 & mini”
- 🔌 Connect via USB – Select correct COM port
- 📝 Upload Code – Start with blink example
- 🚀 Build Your Project!
✅ Why Choose D1 Mini V2?
| Feature |
Benefit |
| 📐 Compact Size |
Fits in small enclosures, breadboard friendly |
| 💰 Cost Effective |
Affordable WiFi solution for any project |
| 🌍 Large Community |
Extensive tutorials, libraries, and support |
| 🔧 Easy to Use |
Arduino IDE compatibility makes it beginner-friendly |
| ⚡ Low Power |
Battery-friendly with deep sleep modes |
| 🔄 OTA Updates |
Update firmware wirelessly without cables |
🛡️ Warranty & Support
✅ Genuine ESP8266 chip guarantee
✅ Tested before shipping
✅ Technical support available
✅ Fast replacement for DOA units
