7+ フォトインタラプタ使い方 Ideas

Introduction

If you're into electronics, you've probably heard of a photo interrupter. This small device is used to detect the presence or absence of an object by shining a beam of light between an emitter and a receiver. In this guide, we'll explain how to use a photo interrupter and provide some tips on how to get the most out of it.

What You'll Need

Before we get started, here's a list of what you'll need:

A photo interrupter
A microcontroller (such as an Arduino)
A breadboard
A few jumper wires

Step 1: Connect the Photo Interrupter

The first step is to connect the photo interrupter to your microcontroller. The photo interrupter will have three pins: VCC, GND, and OUT. Connect VCC to 5V on your microcontroller, GND to GND, and OUT to a digital input pin (such as pin 2).

Step 2: Write the Code

Next, you'll need to write some code to read the state of the photo interrupter. Here's some sample code:

 int photoInterrupterPin = 2; int state = 0; void setup() { pinMode(photoInterrupterPin, INPUT); Serial.begin(9600); } void loop() { state = digitalRead(photoInterrupterPin); Serial.println(state); delay(100); }

This code simply reads the state of the photo interrupter and prints it to the serial monitor. If the interrupter is interrupted (i.e. an object is in front of it), the state will be HIGH. Otherwise, it will be LOW.

Step 3: Test It Out

Now it's time to test your setup. Place an object in front of the photo interrupter and see what happens. You should see the state change to HIGH. Remove the object and the state should go back to LOW.

Tips for Using a Photo Interrupter

Here are some tips for using a photo interrupter:

Make sure the emitter and receiver are properly aligned. If they're not, the interrupter won't work.
Use a small object to interrupt the beam. This will give you more accurate results.
Experiment with different distances between the interrupter and the object. You may find that the range is shorter or longer than you expected.

Conclusion

A photo interrupter is a simple but useful device that can be used in a variety of projects. By following these steps and tips, you'll be able to use a photo interrupter in no time!