Raspberry Pi Pico Projects

Interfacing Rotary Encoder With Raspberry Pi Pico Tutorial

Introduction

In this tutorial, we will show you how to use a Rotary Encoder with Raspberry Pi Pico. A Rotary Encoder is a device that can be used to measure the rotational movement of an object. They are often used in electronic devices such as computer mice and control knobs. In this project, we will use a Rotary Encoder with raspberry Pi Pico to control the position of a servo motor.

A rotary encoder is a device you can use to measure the rotational movement of an object. They are often used in industrial applications where precise control is required, such as CNC machines. Check this interesting project using Rotary encoder Control PC Volume, and Brightness Using Raspberry Pi Pico & Rotary Encoder 

Required Material

What is a Rotary Encoder?

Rotary Encoder with Raspberry pi pico

A rotary encoder is a type of mechanical sensor that is used to count the rotational movement of an object. It is generally used in applications where accurate position or speed control is required, such as in automotive, robotics, and aerospace applications.

As the shaft or wheel rotates, the sensor produces pulses of electrical power that are equal to the angular position of the shaft or wheel. One benefit of using a rotary encoder over different types of sensors is that it can be used to measure both the position and the speed of the shaft or wheel. Also, rotary encoders are relatively affordable and easy to interface with microcontrollers.

How does a Rotary Encoder work

How does a Rotary Encoder work

A Rotary Encoder is a device that measures the rotational movement of an object. It consists of a sensor, usually a visual or magnetic sensor, that generates electrical pulses when the object rotates. The number of pulses per revolution can be used to calculate the speed of the object, and the direction of rotation can be determined by the order of the pulses.

The sensor converts the rotational movement into a digital or analogue signal that can be processed by a control system.  Check also How Rotary Encoder Works 

Construction & Working

It has five pins – Clock, Data, Switch, Vcc, GND

Working:

 

As we rotate our encoder, the two outputs will change depending on the position of the encoder. Which will generate two trains of pulses.

If you look closely those two signals will be 90 degrees out of the phase. If the encoder rotates clockwise then CLOCK will lead and if the encoder rotates counter-clockwise then DATA will lead.

And assuming a look at state change for clockwise two signals will have opposite values and for counter-clockwise exact values.

Rotary Encoder Pinout

rotary encoder module pinout e1654481926441
source – lastminuteengineers

Interfacing a Rotary Encoder with Raspberry pi pico

To interface a rotary encoder with the Pico, we will need to use two of the Pico’s GPIO pins. We will connect one of the GPIO pins to the encoder’s “A” output and the other GPIO pin to the encoder’s “B” output. The

The rotary encoder we will use is the KY-040 encoder. This encoder has a disk with 24 slots and a built-in push button.

Interfacing Rotary Encoder With Raspberry Pi Pico Tutorial Circuit Diagram
Circuit Diagram

Micropython Script – Rotary Encoder with Raspberry pi pico

The code for this project is written in MicroPython, which is a version of the Python programming language. Check also Getting Started With Raspberry Pi Pico With Thonny IDE

Conclusion

Raspberry pi pico rotary encoder

In conclusion, the rotary encoder with Raspberry Pi Pico is a great way to get started with physical computing. It is easy to use and has a lot of features.

Read Similar Articles:

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Ad
Back to top button

Adblock Detected

Please consider supporting us by disabling your ad blocker