ESP-WROOM-02 WiFi module is loaded on Arduino compatible board. There are redundant pins on this board, because GPIO pins of ESP-WROOM-02 are lesser than Arduino. Only one A0 analog input pin. Although it is compatible to Arduino please be aware that it might not operate properly depending on choice of shield. Please refer to How to develop with Arduino IDE for more details. Operating voltage of input/output pin is 3.3 V.

ESPr® Developer w/ female headers - ESP8266 development board

ESP-WROOM-02 is a 32-bit low power micro-controller (MCU) Wi-Fi Module that integrates TCP/IP network stacks, and includes 10-bit ADC with HSPI, SDIO, UART, PWM, I2C, and I2S interfaces.The highlight of this board is an FT231X USB-to-Serial converter. That’s what translates data between your computer and ESP-WROOM-02.

This is a board with ESP-WROOM-02 Wi-Fi module, IR LED and IR remote control receiver module. You will be able to control your air conditioner etc. using Wi-Fi.

This is an universal shield, the size of ESPr Developer (ESP-WROOM-02 Development board) It is very handy when you want to add a small circuit.

This product is a radio controlled door sensor with ESP-WROOM-02 Wi-Fi module and lead switch. You can get Open/ Close information by Wi-Fi. Please use Lithium-ion battery for power.

A sensor board equipped with 9 axis sensor LSM9DS1 from ST for ESPr Developer. LSM9DS1 is a 9 axis MEMS sensor equipped with 3 axis Accelerator, 3 Gyrosensor and 3 Magnetometer.

This is a shield to apply GROVE system device for ESPr Developer. It is a Switch Science original board, based on circuit designed by Mr. Shigeru Kobayashi from IAMAS.

ESPr Developer Environment sensor shield