Thursday, April 16, 2015

Microcontroller Project : Digital Potentiometer Arduino Shield

Eltronicschool. - Here is Microcontroller Project for Digital Potentiometer Arduino Shield. this article we will review the project for an Arduino shield compatible with Arduino Duemilanove, Diecimila and Arduino UNO R1 and R2.

Circuit Schematic

Potentiometer Controls: Analog vs Digital

Why we should use – in a real scenario – a digital potentiometer? As a matter of fact, we should use a digital potentiometer in every case we need a variable resistance controlled by another event. For example, one of the most common ways is changing the volume of an amplified sound depending on an external condition, e.g. the audio volume: with a sound sensor in a room we can adjust the music output level in order to compensate the room noise.

Another example may be a sensor following the movement of a subject to increase the sound level of the neartest speakers. By continuing the exploration of the world of audio controls we will discover almost unlimited possibilities.

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