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(Motivation)
(Motivation)
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[[Benutzer:LeandraChristine|LeandraChristine]] needed a small solution for sound in a project.  
 
[[Benutzer:LeandraChristine|LeandraChristine]] needed a small solution for sound in a project.  
 
Since I was designing lots of PCB’s anyway I decided to also realize this one.
 
Since I was designing lots of PCB’s anyway I decided to also realize this one.
Another requirement was fast responsive. The [[SimpleSDAudio]]-library from [[Benutzer:Tut|Tut]] provides just that. [[Benutzer:Tut|Tut]] helped quite a lot with the circuit design in this project.
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Another requirement was fast responsiveness. The [[SimpleSDAudio]]-library from [[Benutzer:Tut|Tut]] provides just that. [[Benutzer:Tut|Tut]] helped quite a lot with the circuit design in this project.
 
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== Features ==
 
== Features ==

Version vom 5. September 2014, 20:28 Uhr

Motivation

LeandraChristine needed a small solution for sound in a project. Since I was designing lots of PCB’s anyway I decided to also realize this one. Another requirement was fast responsiveness. The SimpleSDAudio-library from Tut provides just that. Tut helped quite a lot with the circuit design in this project.

Features

The board is carrying:

  • Atmega328
  • MAX9098306 3.7W stereo Class D amplifier
  • SN74LVC2G14 dual Schmitt-Trigger with its own low noise power supply
  • microSD-Card Slot
  • 74LVC1G53DP Analog Switch, to set the gain of the Class D amplifier (3 levels)


The controller itself is running on 3.3V (because of the SD-Card). The supply voltage is 5V.

License