The D1 is a WiFi capable ESP8266 based development board in the form of the Arduino UNO board format. This board is compatible with the Arduino IDE and with NodeMCU. The D1 also features an on-board switching power supply which allows you to power the board from a power supply up to 24V, 11 GPIO pins (can be used as input/output/PWM/I²C, except D0), and 1 analog input. The PWM resolution is 10bit (1MHz frequency). The integrated 5V switching power supply (1A) is followed by an 3.3V LDO to supply power for the Wifi module and the 3.3V output (power supply for sensors and shields). Please pay attention when you connect other active periphery to the I/O pins, because this is a 3.3V logic level device and higher levels on any pin will destroy it. The max. input voltage for the analog pin is 3.2V.



Features
Based on ESP-8266EX
Support OTA wireless upload
I/O logic level 3.3V
Onboard 5V 1A Switching Power Supply (highest input voltage 24V)
Compatible with Arduino (Arduino IDE program)
Compatible with NodeMCU


Specifications
Microcontroller: ESP-8266EX
Operating Voltage: 3.3V
Input / Output
11 x Digital I/O pins
1 x Analog I/O pin
I/O logic level: 3.3V
ADC pin (A0) input voltage: 0 – 3.3V
Clock Speed: 80MHz
Flash: 4M bytes
Connectivity: 802.11 b/g/n with PCB antenna.
Supports station / softAP / SoftAP + station modes, WPA/WPA2 security.
Power Supply: 6-24VDC via DC jack, 5V via micro USB port
Diameter: 68.6mm x 53.4mm
Weight: 25g


Package Content
1 x WeMos D1