The D1 R2 is a mini wifi board based on ESP-8266EX.
11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)
1 analog input(3.3V max input)
A Micro USB connection
A power jack, 9-24V power input.
Compatible with
Compatible with nodemcu
Getting Started
NodeMcu
Technical specs:
| Microcontroller
| ESP-8266EX
|
| Operating Voltage
| 3.3V
|
| Digital I/O Pins
| 11
|
| Analog Input Pins
| 1
|
| Clock Speed
| 80MHz/160MHz
|
| FLash
| 4M bytes
|
| Length
| 68.6mm
|
| Width
| 53.4mm
|
| Weight
| 25g
|
| Pin
| Function
| ESP-8266 Pin
|
| TX
| TXD
| TXD
|
| RX
| RXD
| RXD
|
| A0
| Analog input, max 3.3V input
| A0
|
| D0
| IO
| GPIO16
|
| D1
| IO, SCL
| GPIO5
|
| D2
| IO, SDA
| GPIO4
|
| D3
| IO,Pull-up
| GPIO0
|
| D4
| IO,pull-up, BUILTIN_LED
| GPIO2
|
| D5
| IO, SCK
| GPIO14
|
| D6
| IO, MISO
| GPIO12
|
| D7
| IO, MOSI
| GPIO13
|
| D8
| IO,pull-down, SS
| GPIO15
|
| G
| Gound
| GND
|
| 5V
| 5V
| -
|
| 3V3
| 3.3V
| 3.3V
|
| RST
| Reset
| RST
|
*All IO have interrupt/pwm/I2C/one-wire supported(except D0)
Programming:
The D1 R2 has a micro USB for auto programming.
Also you can programming it using OTA
Warnings:
All IO is work at 3.3V.
Package included:
1 x D1 R2 WiFi ESP8266 Development Board
