Sign In

Trouble In Implementing A DAC Using PWM/Timer Method To Be Used In A VOIP Project

Amira Hussein Ahmed Egypt

Hardware: ATMega128 Wired On A Breadboard Software: C Project Using Atmel Studio 7

my project is Voice over IP prototype I want to implement a DAC that takes the digital sound and get it back as analog and I found that the best way is to create it using PWM/timer method using C langauage because I want something cheap and I won't buy a DAC chip. The problem is I couldn't find a C code that implements DAC using PWM/timer method that works on ATMega128 because I am totally a beginner and I still can' write a code myself. please help me



R Avinash Gupta
2016-05-25 04:26:04
Have you made any hardware? If yes, then please post a picture.
R Avinash Gupta
2016-05-26 01:49:06
We are waiting for your reply ....

Have you ever written program to generate PWM signal from Atmega128?

I am not complete audio output but just simple voltage to dim leds etc?
R Avinash Gupta
2016-05-26 11:13:02
Well, then I recommend you to go for following tutorial and make a basic pwm led dimmer working first before moving on to audio.

Its easy, i have also played audio for avr mcus.

R Avinash Gupta
2016-05-26 11:16:22
If you can show us the picture of you development board, i can also provide s sample program

Post a reply to Amira Hussein Ahmed

Think you can help Amira Hussein Ahmed ? Then post your thoughts that might help Amira Hussein Ahmed. You will earn a lot of reputation in the technical community.

If your program is in multiple files, then ZIP the entire folder and attach below

Images and Screenshots

These helps other better understand your suggestion.