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Attention! The product has been discontinued. Check other products incategory. |
Description
Board with the wifi ESP-12E module with connectors in the form of goldpin pins. Led out are 9 GPIO 1 analogue input and RX, TX, RESET, CH_PD pins, power supply and ground. Also on board are LEDs, photoresistor and the voltage regulator of 3.3 V. In addition, the chip has a holder that allows for the power supply using three AA batteries.
The system has a holder for 3 AA batteries- not included, sold separately.
Features of the Yellow Board with ESP-12E
- It has 19 goldpin pins, 2.54 mm pitch:
- 9 x GPIO - digital outputs/inputs
- 1 x ADC input - digital-to-analog converter
- UART (TX, RX) - for communicating, for example, with Arduino
- CH_PD pin
- VCC - supply voltage of 3.3 V
- GND - ground of the system
- The default transfer rate of UART communication: 115200 bps
- The jumper to connect the GPIO0 pin with the ground
- Built-in LEDs, including one LED RGB
- Mounted sensor of light, photoresistor connected to the analog input
- Connected to the holder for 3 AA batteries for powering the system
- It is equipped with built-in PCB antenna
- Dimensions: 51 x 42 mm
Connection
The module has led out connectors of the ESP-12E module onthe goldpin strap, pitch of 2.54 mm.
| Pin | Description |
|---|---|
| TxD | The transmitter of the serial UART interface. |
| RxD | The receiver of the serial UART interface. |
| GPIO x | GPIO pin (digital output/ input) with a serial number. |
| Jumper | Combines GPIO0 with the ground. To update, you need to indicate the low status (i.e. leave the jumper). |
| GPIO 15 |
GPIO No. 15 with a special function: In normal operation and programming, it should indicate the low status (connect to GND). |
| ADC | Analog / digital converter input - combined with built-in light sensor - photoresistor. |
| REST | The system reset. |
| CH_PD | Power down - indicating the low status causes a transition into sleep mode.
To update, you need to indicate a high status (3.3 V). |
| VCC | The power supply - 3.3 V. |
| GND | The ground of the system. |
Software update
To communicate with the Arduino or using the AT commands, we recommend the software update using the XTCOM_UTIL software. To do this:
- Downloadthe software from our website
- On the module connect the pins:
- GPIO0 with ground - using the jumper
- GPIO15 with ground
- REST with VCC
- CH_PD with VCC
- To connect the ESP module through the USB-UART converter
- In the program select Tools -> Config Device
- Choose the correct COM port, open it, and connect with the ESP chip
- Leaving open a window of Device Config, select the API TEST> Flash Image Download
- Choose firmware: ESP8266 v0.9.5.0 AT Firmware.bin and upload by clicking Download
The procedure was presented in the video:
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The product is compatible with Arduino Instruction of connecting the module with Arduino basing on the module ESP-01, you can find on the blog Majsterkowo and in guide prepared by us.
The board tolerates a voltage of 3.3 V. Therefore, you must choose Arduino operating with the voltage of 3.3 V or use a converter. |
Specification
- Supply voltage: 3.3 V
- Current consumption at rest: approx. 10 µA
- Chip: ESP8266
- Standard: wi-fi 802.11 b/g/n
- It operates in the 2.4 GHz frequency
- It supports WPA / WPA2
- It can work in AP mode (Access Point), STA mode (standalone) and AP+STA mode
- It supports AT commands
- Communication: UART (Rx, Tx)
- The default UART speed: 115200 bps
- Lua software support
- Dimensions of board: 51 x 42 mm
