Wemos Micro WiFi Development Board with ESP8266 and CH340G + 50 cm USB Cable

Technical specifications:

• Equipped with ESP8266;
• Flash memory: 32 MB;
• Driver serial: CH340G;
• Power plug: mini USB;
• Supply voltage: 5 V - 9 V DC;
• 9 digital pins;
• 3 3.3V outputs;
• Functions: PWM, ADC;
• Communication protocols: SPI, I 2 C.

Instructions for use:

The Wemos Micro development board is not included in the Arduino IDE development environment, so you need to add it to yourself. This is done as follows:

1. Open Arduino IDE.
2. Go to  FILE> PREFERENCES.
3. Copy the following link to "Additional Boards Manager URLs":  http://arduino.esp8266.com/stable/package_esp8266com_index.json
4. Open  TOOLS> BOARDS> BOARDS MANAGER. 
5. Download and install  ESP8266.
6. Restart the Arduino IDE.

IMPORTANT!!! If your operating system is Windows or MAC OS, you need to install the driver that is attached to the bottom of the page.

You now have to select the plaque. Wemos MIcro is compatible with  Wemos D1 R2 & MINI.  Open the TOOLS> BOARD tab    and select  WeMos D1 R2 & Mini.  

The configuration settings are as follows:

• CPU Frequency: 80 MHz;
• Flash Size: 4 M (1 M SPIFFS);
• Upload Size: 921600

To test the development board functionality, you can upload an example. To choose one, go to  FILE> EXAMPLES   and choose a general one such as  BLINK  or one for  ESP8266 , such as  ESP8266WIFI> WiFi SCAN.