- EOL
|
Attention! The product has been discontinued. Check other products in category. |
Description
Wi-fi module based on the ESP8266 chip. It works in wi-fi 802.11 b/g/n standard at 2.4 GHz. It has led out connectors of the system (they work with the voltage of 3.3 V), LEDs, switch and built-in USB-UART converter based on FTDI chip, which allows for direct programming of the module using the Arduino environment via the microUSB connector -microUSB cablecan be purchased separately.
|
The device has a built-in USB-UART converter which provides a direct connection of the board to the computer via microUSB cable and programming using the Arduino IDE - a detailed description is inthe user's guide.
Pins operate at a voltage of 3.3 V so to connect 5 V modules, required is the externalvoltage converter. |
Features of the module SparkFun Dev Thing
- Built-in USB-UART converter based on the FTDI chip that allows programming directly via microUSB slot
- It has 20 pins that work with a voltage of 3.3 V
- GPIO pins - digital outputs/inputs
- UART (TX, RX) interface - for communicating, for example with Arduino
- Input of the regulator: 5 V - connnected with the power supply of the microUSB connector
- The I2C bus (the SDA and SCL lines)
- Mounting: THT:
- Pins pitch: 2.54 mm (compatible with breadboards),goldpin connectorssold separately
- Equipped with built-in PCB antenna
- It has connector for u.FL for connecting to external antenna
- Built-in 2 LEDs
- 1 x connected to pin 5
- 1 x indicating the power
- The ability to solder an additional power connector: miniJST pitch of 2 mm
- Built-in switch allows you to turn off the power supply at any time
- It has four mounting holes with the 3 mm diameter
Connection
The module has 20 pins led out on both sides of the board. The set does not contain goldpin strap pitch of 2.54 mm, it should be purchased separately and self-soldered.
| Pin | Function | Description |
|---|---|---|
| UART and I2C section |
||
| GND | Ground | The ground of the system. |
| 3V3 | 3.3 V | Voltage 3.3 V. |
|
2 |
SDA GPIO2 |
The data line of the I2C bus or GPIO2 pin of the ESP8226 system. |
| 14 |
SCL SCLK GPIO14 |
The clock line of I2C bus and SPI bus or GPIO14 pin of the ESP8226 system. |
| RST | Reset | The reset of the system is activated twith the low status. By default, the pin is pulled up to the supply voltage through the 10K resistor. |
| TX |
TX0 GPIO7 |
The transmitter of the serial UART interface. |
| RX |
RX0 GPIO8 |
The receiver of the serial UART interface. |
| 5V | 5V | 5 V output voltage from the USB rail. |
| NC | NC | Not connected - you have to leave it not connected. |
| GND | Ground | The ground of the system. |
| Section of GPIO / ADC | ||
| GND | GND | The ground of the system. |
| VIN | VIN |
|
| 5 | GPIO5 | GPIO5 of the ESP8226 system connected to the LED. |
| 0 | GPIO0 | GPIO0of the ESP8226 system. |
| 4 | GPIO4 | GPIO4of the ESP8226 system. |
| 13 |
MOSI GPIO13 |
GPIO13 of the ESP8226 systemand MOSI of the SPI bus. |
| 12 |
MISO GPIO12 |
GPIO12 of the ESP8226 systemand MISO of the SPI bus. |
| 16 |
XPD GPIO16 |
GPIO16of the ESP8226 system, is used to switch the system into the sleep mode. |
| ADC | A0 | A0 input of the 10-bit analog-to-digital converter - maximum allowable voltage is 1 V. |
| 15 | GPIO15 | GPIO4of the ESP8226 system. |
| A detailed description is available in the user manual. |
Specification
- Supply voltage: 3.3 V or 5 V
- Working voltage of pins: 3.3 V (connection with the system operating with a voltage of 5 V requires an external voltage converter)
- Supply current up to 300 mA
- It supports WiFi 802.11 b, g, n standard
- Built-in TCP/IP stack
- It operates in the 2.4 GHz frequency
- It can work in AP mode (Access Point)
- Transmitter power: 19,5 dBm
- Communication is via the serial UART interface
- It has a built-in USB-UART converter based on FTDI system
- It has a built-in PCB antenna
- Equipped with communication interfaces: SPI, UART, SDIO
- Mounting: through hole - pitch of 2.54 mm (goldpin connectorssold separately)
Useful links |
