Arduino Basic: How to use the Arduino I2C Scanner?

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This post will show you how to use the Arduino I2C scanner sketch to know the I2C addresses of all sensors or devices attached to your circuit.

This will discuss what is I2C and how you can connect multiple I2C devices on your Arduino-powered microcontroller.

WriteUp:

Contents of the Video:
0:00 - Demo
1:03 - DonskyTech Plug
1:17 - Intro
1:43 - What is I2C?
2:31 - What is I2C Address?
3:26 - How to connect multiple I2C devices to your Arduino?
4:12 - What is the Arduino I2C Scanner?
5:19 - How to run the Arduino I2C Scanner?
5:44 - Wiring/Schematic
6:15 - Code
7:03 - Outro

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#arduino
#i2c_scanner
#esp32
  1. DonskyTech
  2. arduino
  3. i2c_scanner
  4. esp32
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Nice job explaining this. I know you wired up all three i2c sensors for the demo but the Scanner does not tell you which sensor is which address so better to hook them up one at a time. Thanks again a good review of the subject.

keithlohmeyer