ESP-WROOM-02 Wi-Fi Shield

This is a shield with ESP-WROOM-02 Wi-Fi module. It allows Wi-Fi communication on a micro controller board such as Arduino Uno R3 etc.

This product communicates with Arduino by serial. Please use the slide switch to choose hardware serial or software serial.

5 V or 3.3 V can both be connected to the micro controller board by using jumper socket to choose the preferred I/O voltage.

It's handy when you want Wi-Fi communication by micro controller boards with pins headers compatible with Arduino Uno R3, for example FRDM-K64F.

The pin header is not included. Please purchase them separately and solder them depending on your usage.


  • ESP-WROOM-02 Wi-Fi module
  • Serial communication pin switcher (choose by slide switch)
    • Arduino hardware serial: D0 (H TXD) D1 (H RXD)
    • Arduino software serial: D2 (S TXD) D4 (S RXD)
  • Micro controller board I/O Voltage changeover (choose by jumper socket JP2)
    • 5 V or 3.3 V
  • Rearrange reset button
    • SJ1: Short (default) ESP-WROOM-02 reset valid
    • SJ1: Disconnect ESP-WROOM-02 reset invalid
    • SJ2: Short (default) Arduino reset valid
    • SJ2: Disconnect Arduino reset invalid
  • Universal area
  • ESP-WROOM-02 Firmware re-writing port JP1


  • Shield × 1
  • Jumper socket × 1


ESP-WROOM-02 Wi-Fi Shield
Name ESP-WROOM-02 Wi-Fi Shield
Code SSCI-026192
SKU# 2619
Shipping EMS
Price: 25.00 USD