Purecrea WeMos D1 mini PRO 16Mbit ESP8266

This small ESP8266 WeMos D1 mini PRO microcontroller with 16 Mbit flash memory is very powerful and features a Wi-Fi module. The module is compatible with the Arduino IDE and can be programmed immediately. With the ESP8266, you can easily connect your projects to the internet. The board is often used for Internet of Things (IoT) applications. For example, you can easily connect your data logger to the internet and log the data to a cloud. The WeMos D1 mini PRO has a micro-USB port for programming and power supply. Since the ESP8266 is a pure 3.3V controller, all inputs and outputs must only be operated at 3.3V. If you still want to connect or control something with 5V, you will need to use a logic level converter. The WeMos D1 mini PRO has an antenna connector so you can improve reception with an external antenna.

If you want to use an external antenna, you need to solder the zero-ohm bridge from the on-board antenna to the external one.

Technical details:
Microcontroller: ESP8266EX
Connection: Micro-USB
USB-UART converter: CP2104
Operating voltage: 5V USB
Digital I/O pins: 10
Analog input: 1 (10 Bit max. 3.2V)
CPU: 80MHz
RAM: 96kB
Flash: 16 Mbit
Wi-Fi (Client, Access Point Mode)
Integrated Wi-Fi antenna
Antenna connector for external antenna available (U.FL Pigtail connector)
Size: 35 x 26 x 4 mm
Weight: 7.2 g

Included in delivery:
1x WeMos D1 mini PRO 16 Mbit ESP8266
2x Male pin headers
2x Female pin headers with long pins
2x Female pin headers with short pins.