Pro Trinket can function as both a USB HID keyboard and mouse at the same time with the introduced Arduino library. This project demonstrates using a rotary encoder as a multimedia volume control and mute switch for your computer.
Using the Rotary Encoder in ArduinoReading the rotationYou can read the rotation by checking the status of the CLK pin. Whenever it goes LOW, read the value of the DT pin to determine the direction: HIGH means clockwise rotation, LOW means counterclockwise rotation. Code example:...
Finally, assemble the case. Place the knob onto the rotary encoder. Your device is now ready to use! Software Firmware Versions Volume Knob This firmware enables the USB Knob to control the volume of your computer. By turning the knob, you can increase or decrease the volume, while pressing...
I needed a rotary encoder — I pulled a cheap one out of one of those “49 boards for Arduino” kits you see around. Not the finest encoder in the land, I’m sure, but it should do the job. Unfortunately, Mbed OS doesn’t have a driver for an encoder and the first few third-...
A Big Rotary Encoder If you would like to use an encoder in your project, thisBig Rotary Encoder from Zachteklooks quite interesting. The assembly comes in a 600 or even 2000 pulses per revolution versions, and outputs position signals over I2C or UART via an onboard Arduino Pro Mini, mea...
"Auto Encoder" - returns an absolute value when the position changes, e.g. like an old-fashioned volume control It also includes "hooks" which allow the user to do things like this, monitoring the state of the pins in (near) real-time. This graphic display example is taken from a devi...