All the modern DAC, ADC and Digital Volume chips need to be configurated and managed using a microcontroller connected using I2C or SPI. Here I would like to give you the elements to create this control module without software or hardware problems and with no expensive components.

Jan 4, 2014 · Volume control (w/ mute) Switcher board; LCD screen; IR receiver; Microcontroller with input from smooth encoder; Basically the nearest match to my project is the VC-03. I have been considering different options, such as building this from scrap or using a audio processor on the market, with I2S bus interface. It raises one essential question ...

The spectrum frequency analysis is performed by a highly optimised 16-bit Fast Fourier Transformation (FFT) routine coded entirely in C. The output from the FFT is displayed using a 128×64 graphical LCD to allow a real-time view of an audio signal.

Mar 30, 2011 · A simple high-quality 6-channel volume control circuit. It is assembled on a TDA7448 microcircuit manufactured by STMicroelectronics. This chip has a digital I2C interface.

Aug 27, 2023 · How to interface an LCD screen with a microcontroller. Depends on the LCD you’re using and which microcontroller you are using. However, regardless of lcd, the interfacing is somewhat same. I recently had the experience of interfacing OLED with Zedboard and here are the steps I followed:

Jun 18, 2020 · So in this project, I am going to show you how to build your Digital Volume Controller with the IC PT2258 and interface it with an Arduino to control the volume of an amplifier circuit. You can also check various Audio related circuits …

Jun 26, 2011 · The PIC18F2550 microcontroller receives user inputs from tact switches and set the wiper positions accordingly, which in fact control the output volume. A LCD is used to display the individual channel volume level.

Jun 29, 2005 · The LM3915 is intended to drive LED Bargraphs -- but you can translate the output (with a little "software in silicon") into numeric values for display on an LCD. without a microcontroller, however, getting the data onto the LCD display is a lot of work.

One option would be using two push-buttons and using those as volume up and volume down buttons. Another option is using a potentiometer for analog control of the audio level. Yet another option is using a rotary encoder as a volume control.

Dec 24, 2022 · This project is about a stereo audio amplifier using two LM386 ICs with digital volume control for both left and right speakers. So, how would you control the volume digitally? You are right, by replacing the traditional electro-mechanical form of potentiometers with digital potentiometer chips.