Jefferson Paredes
Published © MIT

Add WiFi to Arduino UNO

Connect your microcontroller to the internet by adding ESP8266 WiFi module!

BeginnerProtip1 hour359,309
Add WiFi to Arduino UNO

Things used in this project

Hardware components

Arduino UNO & Genuino UNO
Arduino UNO & Genuino UNO
×1
ESP8266 ESP-01
Espressif ESP8266 ESP-01
×1
Jumper wires (generic)
Jumper wires (generic)
×1
Resistor 10k ohm
Resistor 10k ohm
×1
Resistor 1k ohm
Resistor 1k ohm
×2

Software apps and online services

Arduino IDE
Arduino IDE

Story

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Schematics

ESP and Arduino Circuit Diagram

connect both ESP's VCC/3.3V/Power Pin and Enable Pin (red wires) to 10K resistor then to Uno's +3.3V power pin.
connect ESP's Ground/GND Pin (Black Wire) to Uno's Ground/GND Pin.
connect ESP's TX (green wire) to Uno's Pin 3
cconnect ESP's RX (blue wire) to 1K resistor then to Uno's Pin 2.
cconnect ESP's RX (blue wire) to 1K resistor then to Uno's GND Pin.

ESP Pinout

Code

ESP8266 Sample Communication with Arduino UNO

Credits

Jefferson Paredes

Jefferson Paredes

1 project • 73 followers
Programming is my love and engineering is my third party :)

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