diff --git a/documentation/images/audiosphere-electronics.png b/documentation/images/audiosphere-electronics.png index d01ee28..8d0854b 100644 Binary files a/documentation/images/audiosphere-electronics.png and b/documentation/images/audiosphere-electronics.png differ diff --git a/documentation/index.html b/documentation/index.html index e409e07..ed29b76 100644 --- a/documentation/index.html +++ b/documentation/index.html @@ -139,7 +139,7 @@ h2, h3 {

- On the software side there's two major improvements: The SD card is now mounted read-only by default. This makes unplugging the AudioSphere (by accident or for reboot) unproblematic. And the Python script that operates the player now uses interrupts instead of polling for checking the input sources. This removes unnecessary overhead from the CPU and also reduces power-consumption. + On the software side there's two major improvements: The SD card is now mounted read-only by default. This makes unplugging the AudioSphere (by accident or for reboot) unproblematic. And the Python script that operates the player now uses interrupts instead of polling for checking the input sources - no more busy waiting! This removes unnecessary overhead from the CPU and also reduces power-consumption.

@@ -200,15 +200,17 @@ h2, h3 {

Preparing the JBL IIIp Speaker

+ In order to drill the holes for the screws, the JBL On Stage IIIp has to be disassembled. The procedure is described here at ifixit.com for the predecessor which works basically the same way: Remove the rubber pads, then unscrew + +

Electronics

+ After soldering the PHAT DAC onto the Raspberri Pi the used GPIO PINs (9, 10, 11, 17, 22 and 27 together with physical PIN 1 and 9) are connected with jumper cables. (The easiest way is to solder all PINs at once with a GPIO header.)

The electronics in a single diagram with the optical sensor on the left, the LED, the infrared LED for remote controlling the speaker and the four buttons. The circuit board after soldering with all resistors and the LED for illumination. Buttons, optical sensor and infrared LED are installed directly in the case.

- -

Software

System Installation

Python Script

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