WEMOS D1 Mini Pro – ESP8266 Based Wi-Fi Module (4MB)

Wiring Connections:

• Power:
  • V5 (5V): Connect this pin to a 5V power source, such as a USB adapter or a regulated power supply.
  • GND (Ground): Connect this pin to the ground of your power source or other connected components.
• I/O Pins:
  • D0 to D8: Digital I/O pins for interfacing with sensors, relays, and other devices.
  • A0: Analog input pin for reading signals from analog sensors.
  • TX/RX: Serial communication pins for UART. TX sends data and RX receives data.
• USB Port:
  • Micro USB Connector: Used for powering the board and for programming.

Power:

• Operating Voltage: 3.3V, which is regulated from the 5V input.
• Power Consumption:  around 100mA during active use; lower when in sleep mode.
• Power Source: Can be powered via the micro USB port or directly through the 5V pin.

Input and Output:

• Digital I/O: 11 pins (D0 to D8) for digital input and output.
• Analog Input: 1 pin (A0) for analog input.
• Serial Communication: TX and RX pins for UART communication with other devices.
• PWM: Supports Pulse Width Modulation on several digital pins for controlling motors and LEDs.

Physical Characteristics:

• Dimensions: 34.2mm x 25.6mm, making it compact and suitable for small projects.
• Mounting Holes: Includes holes for mounting to enclosures or other surfaces.
• Connector Type: Micro USB for power and programming.

Technical Specifications:

• Processor: Tensilica L106 32-bit RISC microprocessor.
• Clock Speed: Up to 80 MHz.
• Memory: 4MB flash memory for storing code and data.
• Connectivity: Built-in Wi-Fi 802.11 b/g/n for network communication.
• GPIO: General-purpose I/O pins with built-in pull-up/pull-down resistors.

Additional Features:

• Built-in LED: Onboard LED for basic status indication and debugging.
• Compatibility: Integrates with various shields and modules designed for the Arduino platform.
• Development Environment: Fully supported by the Arduino IDE, which simplifies programming.

How to Use:

1. Power Connection:
   • Connect Power: Plug the board into a 5V power source using a micro USB cable or connect a regulated 5V supply to the V5 pin.
2. Programming:
   • Install Arduino IDE: Download and set up the Arduino IDE on your computer. Add support for ESP8266 boards via the Board Manager.
   • Select Board: Choose “WEMOS D1 Mini Pro” from the list of ESP8266 boards in the Arduino IDE.
   • Write Code: Develop your code using the Arduino programming language.
   • Upload Code: Connect the board to your computer via USB and upload your code using the Arduino IDE.
3. Connecting Peripherals:
   • Digital I/O: Connect sensors, relays, and other devices to the digital I/O pins (D0 to D8).
   • Analog Input: Attach analog sensors to the A0 pin to read analog signals.
   • Serial Communication: Use the TX and RX pins for serial communication with other modules like GPS or displays.
4. Wi-Fi Setup:
   • Configure Wi-Fi: Write code to connect the board to a Wi-Fi network by specifying the SSID and password.
   • Network Tasks: Utilize libraries like ESP8266WiFi to handle network tasks such as connecting to servers or sending data.
5. Testing and Debugging:
   • Serial Monitor: Open the Serial Monitor in the Arduino IDE to view debug information and outputs.
   • Verify Connectivity: Ensure the board connects to the Wi-Fi network and communicate with peripherals.
6. Integration:
   • Embed in Projects: Use the WEMOS D1 Mini Pro in various applications, including smart home devices, IoT projects, and custom electronics.

The WEMOS D1 Mini Pro is a versatile, compact development board with ample flash memory and built-in Wi-Fi, making it ideal for a wide range of IoT applications and electronic projects.