The PRODINo WIFI-ESP WROOM-02 V1.0 connects your Arduino to the internet wirelessly. Connect it to your wireless network by following a few simple instructions to start controlling your world through the internet. Plus RS485 connection, GROVE , UEXT, some digital and analog inputs/outputs and a few relays. It is the base device to extend your project to the IoT world. You can control sensors and actuators via the Internet as a client or a server. Also you can use it lots of and vary projects. We present you our board:

ProDino WiFi V1.0 box 3D

Our board is powered by Espressif System's own ESP8266 WROOM-02 module with 2 MB Flash. It has 4 digital optical isolated inputs, 4 relays outputs, 2 digital and 1 analog input/output pins, 2GROVE connectors, 1 UEXT, a RS485 communication connector, a micro USB connector, a header by programming, a flash button and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable and power it and get started.


The PRODINo WIFI-ESP WROOM-02 V1.0 has a number of facilities for communicate with other WiFi device, a computer, another Arduino board, vary devices support RS485, Ethernet devices (connected to WiFi router), sensors or other microcontrollers. A wired connection you can made through RS485 protocol. The RS485 communication supports easy link with many and different type of devices.

The ESP8266 WROOM-02 Module is a self contained SOC (system on chip) with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 WROOM-02 is capable of either hosting an application or support Wi-Fi networking functions.

This module has a powerful enough on-board processing and storage capability that allows it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. There is an almost limitless fountain of information available for the ESP8266 WROOM-02, all of which has been provided by amazing community support. In the Tutorial section below you will find many resources to aid you in using the ESP8266 WROOM-02, even instructions on how to transforming this module into an IoT (Internet of Things) solution!

ProDino WiFi V1.0 board Base Top


ProDino WiFi V1.0 box board back


Getting started

You can find in the Tutorial section all the information you need to configure your board, use the Arduino Software (IDE), and start tinker with coding and electronics. What you can do with this board see in our Examples.


  • Wi-Fi module Espressif ESP8266 WROOM-02
  • Wi-Fi Direct (P2P), soft-AP
  • Integrated TCP/IP protocol stack 
  • Integrated TR switch, balun, LNA, power amplifier and matching network
  • Integrated PLLs, regulators, DCXO and power management units
  • Integrated low power 32-bit CPU could be used as application processor
  • Integrated low power 32-bit CPU could be used as application processor
  • 2 x GROVE connectors 1 external and 1 internal 
  • 1 x UEXT internal connector 
  • 4 Relay Outputs 
  • 4 Optical Isolated Inputs 
  • RS485 port 
  • Switching Regulator power supply
  • Arduino compatible


  • 802.11 b/g/n
  • 2MB Flash Memory 
  • Power down leakage current of <10uA 
  • +19.5 dBm output power in 802.11b mode
  • Wake up and transmit packets in < 2ms 
  • Optical isolated digital Inputs: 4 (working voltage 1.5-30 V, On arrives form 1.5V )
  • Relay outputs: 4 (maximum voltage/current 250V/5A)
  • Input Voltage: (Power supply) 6 - 30 VDC
  • Dimension: 70 mm X 92 mm X 32 mm
  • Weight: 126 g
ProDino WiFi V1.0 board 3D


All dimensions are in mm

ProDino WiFi V1.0 Dimensions

Additional connectors





Pins mapping

External J10 Grove Digital 

  • 1 - EXT_GROVE_D0 - Primary digital Input/Output It is same for J12 INT_GROVE_D1
  • 2 - EXT_GROVE_D1 - Secondary digital Input/Output
  • 3 - Vcc  - Powering Grove module 3,3 V
  • 4 - GND  - Ground

Internal J12 Grove Mixed (Analog/Digital) 

  • 1 - INT_GROVE_A0 -

    Primary analog Input/Output

    (the value is divided 2)

  • 2 - INT_GROVE_D1 - Secondary digital Input/Output It is same for J10 EXT_GROVE_D0
  • 3 - Vcc  - Powering Grove module 3,3 V
  • 4 - GND  - Ground

UEXT (internal)

  • 1 +3.3 volt
  • 2 - GND
  • 3 - TXD 
  • 4 -RXD
  • 5 - SCL
  • 6 - SDA
  • 7 - MISO
  • 8 - MOSI
  • 9 - SCK
  • 10 - SSEL

What does the board consume?


All relays off

All relays on

6 V

0.080 A

0.300 A

12 V

0.040 A

0.150 A

24 V

0.022 A

0.083 A

Optical isolated inputs when On state

1.5 V - 0.3 mA

5 V - 0.6 mA

12 V - 1.0 mA

24 V - 1.5 mA