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Description
Arduino compatible module based onESP8266 WiFichip. It has the ability to connect to the wireless network and 11 digital inputs/outputs, 10 PWM channels, 1 analog input and popular communication interfaces. This version works with 3.3V and has a microUSB connector for programming.
ESP8266 controllerprovides WiFi connectivity, thanks to the built-in controller the system can be programmed through Arduino IDE environment usingmicroUSB cable(sold separately). The board also works with NodeMCU.
Downloads .
Physical distribution of the leads is in accordance withthe Arduino Uno plate- below is a description of the individual pins.
|
Pin Arduino |
Pin ESP-8266 |
Function |
|---|---|---|
| TX | TXD | UART interface data line - transmitter. |
| RX | RXD | UART interface data line - receiver. |
| A0 | A0 | Analog input, maximum voltage 3.3 V |
| D0 | GPIO16 | Digital I/O line. |
| D1 | GPIO5 |
Digital I/O line. I2C - SCL bus clock line. |
| D2 | GPIO4 |
Digital I/O line. I2C bus data line - SDA. |
| D3 | GPIO0 | Digital I/O line with 10 kΩ pull-up resistor for VCC. |
| D4 | GPIO2 |
Digital I/O line with 10 kΩ pull-up resistor for VCC. Built-in LED included. |
| D5 | GPIO14 |
Digital I/O line. SPI - SCK bus clock line. |
| D6 | GPIO12 |
Digital I/O line. SPI - MISO bus data line. |
| D7 | GPIO13 |
Digital I/O line. SPI - MOSI bus data line. |
| D8 | GPIO15 |
Digital I/O line with pull-up resistor up to GND 10 kΩ SPI - SS bus line. |
| GND | GND | Mass |
| 5V | - | Output voltage from the 5 V regulator. |
| 3V3 | 3,3V | Output voltage from the controller 3.3 V. |
| RST | RST | Module reset. |
| VIN | - | Power supply voltage from the DC connector. |
First start-up
- Download and install Arduino IDE version 1.6.7+ fromwww.arduino.cc.
- Run Arduino IDE, chooseFile ->Preferences
- In the place Additional URLs for the tile manager, enter:
http://arduino.esp8266.com/stable/package_esp8266com_index.json - SelectTools ->Tile ->Tile Manager
- Install ESP8266 Community (probably at the bottom of the list)
- From Menu:Tools ->Plateselect WeMos R1 (retired)
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The description of programming the board using Arduino IDE environment can be found onmanufacturer's website. Sample programs are available inGitHub service. |
Specification .
- Supply voltage: 9 V to 24 V
- The voltage of the leads: 3,3 V
- ESP8266 Controller
- Flash memory: 4 MB
- Ports I/O: 11
- PWM outputs: 10
- Number of analog inputs: 1 (A/C converter channel)
- Serial interfaces: UART, SPI, I2C, 1-Wire
- External interruptions
- WiFi network controller
- Connector: microUSB socket(microUSB cablesold separately)
- USB controller - UART: CH340
- Compatible with theArduino IDECentral
- Compatible withNodeMCU
- Power connector: DC 5.5 x 2.1 mm
- Dimensions of the board: 69 x 54 x 15 mm
Useful links |
