2 Replies Latest reply on Jul 22, 2014 9:11 AM by SpiderKenny

    4x1 Audio Switcher, with 20+20W output shield


      In my continuing quest to explore Wireless audio as part of my Master's degree, I've designed a new shield for Galileo. (It'll probably work for Arduino UNO as well, but I can't test that.).


      These are the basic features of it:

      • 4 x Stereo input sources (two on Phono, two on ⅛" audio jack)
      • DAB Radio header (switchable with input #1)
      • 1 x Stereo 20+20W Class D Amplifier output. (TPA2123)
      • Volume, Bass, Treble and Balance control. (TDA7440D)
      • SPI Header for expansion
      • I2C Header for OLED Display or further expansion
      • RS232 Hedaer for communicating with external home automation systems (such as Lighting dimmers)
      • RS485 Header for communicating with Capacitive touch control plates.
      • Full control via Ethernet, RS232, RS485 or any combination.


      Here are a couple of pics, one of the board itself, one of it sitting on top of Galileo.


      Screen Shot 2014-07-21 at 16.53.26.png

      Screen Shot 2014-07-21 at 16.53.07.png