Arduino and ESP32 Serial Communication || UART Communication

In this video tutorial, I will show How to Exchange Data between Arduino and ESP32 using Serial Communication?

Serial communication is a process of data transmission sequentially through a communication channel or bus.
At least one serial pin is available in every Arduino and ESP board. The pins are named TX and RX pins. TX stands for transmitting, and RX stands for receiving.

Serial communication is also known as UART Communication. The Arduino UART Communication and ESP32 UART Communication work together through the operation voltage are not the same.
To establish serial communication between Arduino and ESP32, we can cross-connect the TX and RX pins of Arduino with ESP32.

Overview:
The video demonstrates serial communication between Arduino and ESP32, showcasing how to establish a connection and exchange data. It covers ESP32 and Arduino Uno, highlighting their compatibility for serial communication. The tutorial focuses explicitly on UART communication with ESP32, including ESP8266, and Arduino, illustrating how to transmit and receive data through the serial interface. It explores the UART communication protocol, explaining its significance in establishing reliable data transfer between devices. The video also touches upon nodemcu and Arduino UNO serial communication, showcasing their interoperability. Additionally, it provides an overview of ESP32, discussing its features and applications. The tutorial offers a comprehensive guide to implementing UART-based serial communication between Arduino and ESP32.
#esp32 #arduino

[nataliealonso]

excellent tutorial thank you very much! how would be the code to connect two ESP32? via serial communication

[ChathuYasas]

There were errors in serial data that I get many times also in my projects. So I think this is a great tutorial.

[hamermohd]

Thank you for the clear and fantastic tutorial.

[mjuliana]

Hello, thank you for the video. But I have found different information in some videos, why some videos recommend to connect RX of arduino with TX of esp32, and other recommend to connect RX of arduIno with RX of esp32?

[floringaspar]

Please help me man. I'm trying to transmit data from esp32-cam to the Arduino Pro Mini. I use a 5v to 3.3v voltage divider for Rx and TX pins. The data is transmitted for a few seconds, only after I disconnect the pin. Otherwise this communication does not work. I also tried at 5v voltage, without divider, the problem is the same.

[lazyvideos]

is it essential software serial at receiver side????any way i have default serial port like UART0 so i can use that both side transmitter and receiver side also right??? while programming my be i should remove the tx rx ....pls upadte on this???

[rayleblanc]

Can you use the esp32 to upload sketches to the arduino mega wirelessly and receive serial monitor info back wirelessly ?

[e-splash]

Does it okey to directly connect the RX and TX of Arduino Uno and ESP 32S without using a voltage divider??

[lailanadira]

hello, can the esp32 connect with stm32 through serial ? and esp32 send notifications through telegram by using stm ?

[carlosmedrano]

its secure to connect directly the TX of ESP32 to the RX of Arduino, have problem with the voltage?

[fhxdbrq]

I am using esp32 with arduino mega 2560, however when I run the code I don't get any output on the esp32 serial monitor, I connected TX1 of arduino mega 2560 to RX (GPIO3) on the esp32. If you can please help with this

[marinekid]

Hello, when I copied and pasted the code, I get an error message saying that " 'Serial2' was not declared in this scope." Any suggestions?

[mertkayahan]

Hello, I am doing a project. I want to connect Arduino mega with esp32 and send an analog signal from esp32 to the PS gamepad. So, how can I send an int or double variable instead of a string expression from esp32 to arduino?

[nasralhubishi]

Hello.
I want to make the esp32 the sender and arduino mega is the reciver, in other way i want the opposite of this video please...

[bryanangelobragais]

sir thank you for your video. can i ask about esp32 how to send data using Arduino + esp32 to android

[muhammadhazrolhafifibinabd]

Hello, does this mean i connect the android app to esp32, then the data received transfer from esp32 to arduino and arduino to esp32 and to android app?

[rodo]

I want to send FROM esp32, to arduino uno, doesn't work. Is it because rx from esp32 is 3.3 v?

[hfe]

How about voltage level in DIO? Arduino is 5v and 3.3V in Esp32

[kangkamal]

it's safe for esp? cause digital signal from arduino has 5v and working device for esp is 3.3v

[ffbjtrj]

Excuse me, I copied it, why does exit status 1 appear?
'Serial2' was not declared in this scope?