ESP32 - Hello World
This tutorial instructs you how to write the first program on ESP32. You will learn how to make ESP32 print Hello World to Serial.
Hardware Used In This Tutorial
Or you can buy the following kits:
| 1 | × | DIYables ESP32 Starter Kit (ESP32 included) | |
| 1 | × | DIYables Sensor Kit (18 sensors/displays) |
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Quick Instructions
- If this is the first time you use ESP32, see how to setup environment for ESP32 on Arduino IDE.
- Do the wiring as above image.
- Connect the ESP32 board to your PC via a micro USB cable.
- Open Arduino IDE.
- Select ESP32 board
- Select ESP32 serial port (number may be different)
- Type the following code
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
}
void loop() {
// put your main code here, to run repeatedly:
Serial.println("Hello World!");
delay(500);
}
- Compile and upload code to ESP32 board by clicking Upload button on Arduino IDE
- Open Serial Monitor on Arduino IDE
- See the result on Serial Monitor. It looks like the below::
8
Serial.println("Hello World!");
Message (Enter to send message to 'ESP32 Dev Module' on 'COM15')
New Line
9600 baud
Hello World!
Hello World!
Hello World!
Hello World!
Modifying ESP32 Code
- Replace “Hello World!” by any text, for example, “Hello esp32io.com”.
- Compile and upload code to ESP32 board by clicking Upload button on Arduino IDE
- See the result on Serial Monitor. It looks like the below:
8
Serial.println("Hello World!");
Message (Enter to send message to 'ESP32 Dev Module' on 'COM15')
New Line
9600 baud
Hello esp32io.com
Hello esp32io.com
Hello esp32io.com
Hello esp32io.com
Video Tutorial
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