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ESP8266 WEMOS ESP-WROOM-02 module with 18650 battery holder, microUSB, CP2102, Arduino
5
Description
ESP8266 WEMOS ESP-WROOM-02 module with 18650 holder microUSB CP2102 for Arduino to ESP8266
ESP8266 WEMOS WROOM-02 module with an 18650 battery holder provides wireless connectivity and long battery run time of up to 17h. The board is intended for advanced IoT and wireless projects, operating at a 3.3V logic level.
The device is fitted with LED indicators for battery status: green means the battery is charged, and red indicates charging in progress. The module allows charging the cell while using the board at the same time.
The board includes a battery power switch and a microUSB port. Thanks to the built-in USB CP2102 converter, the module offers broad compatibility and is easy to program from the Arduino IDE.
The board is rich in interfaces, offering GPIO, I2C, I2S, PWM, SDIO, SPI, UART. It supports many tasks and sensors thanks to 10 digital I/O pins and one analog input.
Key technical specifications
- Supply voltage: 3.3V
- Chip: ESP8266 WROOM-02
- USB converter: CP2102 (NOT CH340!)
- Connector: microUSB
- Battery holder: 18650
- Power switch: onboard
- Interfaces: GPIO, I2C, I2S, PWM, SDIO, SPI, UART
- Digital I/O pins: 10
- Analog input: 1
- Dimensions: 90 mm x 26 mm
Example applications
- Portable battery-powered weather stations sending data over WiFi
- Wireless nodes in smart home systems (e.g. temperature and humidity sensors)
- Mobile data loggers with direct upload to a server
- Remotely controlled vehicles and educational robots for Arduino
- Monitoring and alarm systems that notify the user over the network
Benefits
- Integrated power: built-in 18650 holder removes the need for external power modules
- Continuous operation: ability to charge the cell while the board is running
- High reliability: a stable CP2102 converter ensures trouble-free communication with a computer
- Easy programming: full compatibility and programming directly from the Arduino IDE
- Versatility: many pins and interfaces allow connecting a wide variety of sensors
Shipping costs
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