D1-Mini ESP8266 ESP-12F Wifi Module

ESP8266 ESP-12F Wifi development board is a breadboard compatible and Arduino IDE supported development board. It also has an on board CH340 USB-TTL convert reset button.It offers 4MB flash memory, 11GPIOs, 1 ADC pin in a minimal and small setup. So, if you need something that consumes less power for a more economical project, this is a good option. All of the Digital I/O support PWM and interrupts except D0.  In addition they can be configured to have pull-up or pull-down resistors.

Specifications

- Microcontroller: ESP 8266 32-bit
- Serial to USB Converter: CH340
- USb Connector: Micro USB
- Operating voltage: 3.3 V
- Input Voltage: 3.3V / 5V
- DC Current per pin: 12mA(Max)
- Flash Memory: 4MB
- Clock Speed: 80MHz
- Digital I/O: 11
- Analogue I/O: 1 (10 bit ADC, Max Input 3.2V)
- Communications:  Serial, SPI., I2C interrupt/PWM and 1-Wire via software libraries
- WIFI: Built in 802.11 b/g/n
- Has built-in LED connected to pin 4
- Compatble with Arduino IDE and NodeMCU
- Dimension: 34 x 26mm