ESPr® Developer w/ female headers - ESP8266 development board

Former product name: ESP-WROOM-02 Development Board

This product was renamed from ESP-WROOM-02 Development Board to ESPr Developer as of June 9th 2016.

It is a development board with ESP-WROOM-02 and USB Serial converter IC (FT231XS). It also has a 3.3 V output regulator, reset switch and an action mode switcher which enables you to use your ESP-WROOM-02 Wi-Fi right away.

ESP-WROOM-02 Development Board with pre-soldered headers. By using male/male jumper wires, you can easily connect this board to a breadboard without having to solder it.

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.


Also defects might occur when using VIN pin with Rev.2 on the back.This has been improved from Rev.3.All the products have switched to Rev.3 as of July 29th 2016.


  • ESP-WROOM-02
    • IEEE 802.11b/g/n (2.4 GHz)
    • 32-bit low power micro-controller (MCU)
    • 10 bit A/D Converter
    • TCP/IP
    • FCC、CE、Design certified
    • Deep sleep mode: Under 10 uA, Off mode: Under 5 uA
    • Startup to packet transmission: Under 2 ms
    • Power consumption(standby): Under 1 mW(DTIM3)
    • Output: +20 dBm(when using 802.11b)
    • -40 ℃〜125 ℃
  • USB : MicroUSB
  • FT231XS on board
    • TX,RX signs on LED for correspondence check are reversed.RX will switch when a transmission has been made from ESP-WROOM-02.Alterations are planned from next lot.(July 12th 2016)
  • RESET button、MODE Switch Button
  • Operation Voltage: 3.3 V
  • Power pin
    • VIN: 3.7-6 V
    • VOUT: Changed name to VOUT pin from 5 V pin.(January 8th 2016)
    • Operating voltage: 5 V (fed from USB),Power of VIN will output from VOUT (fed from VIN)
    • 3.3 V Pin: For output purpose only


  • Board X 1



ESPr® Developer w/ female headers - ESP8266 development board
Name ESPr® Developer w/ female headers - ESP8266 development board
Code SSCI-026529
SKU# 2652
Shipping EMS
Price: 20.77 USD