Dyjtal use of volume today you new audio device of an integral is almost time ago for a volume Dranjmn Membership digital circuits were introduced in a circuit with the source Atmega8 PLC hardware and the basic difficulty was ومن edit them, I got the answer.

That if the circuit is working by pressing the 2 button up and down resistance Khvrjy Mykndv circuit if the circuit changes the way the speaker series, or put the amplifier circuit of the variable resistance and resistance variable removed provided and leave the circuit, you can digitally change the sound level output.

Another benefit of this circuit you can Bhnvanmbdl That is the analogue to digital also use it and need to add is d2a IC and above arrangement simply to a digital analog converter with a very high accuracy output voltage and باشین quickly wired the voltmeter is used to download.

But the volume of digital circuit for use initially a bulb string 3 or 5 Vlty Brdaryn (flashlight bulb) and instead put in orbit voltmeter then lamps in front of a Photo tuberculosis so that the change vision photocell voltage and resistance was light and the way you wire the photocell Speaker, however, put the photocell light and put a container around the ambient light is not work on it .. Such as following

To download a map and digital source volume atmega8 click on the photo below.

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Source: Yazd Kit
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