wiki:Projekte/BassBox

Bass Box

A portable speaker box, that is feed via bluetooth (based on the GP503 from Jay-Tech).

Project was initiated by Gregoa.

Modifications

Speaker

...

Chassis

Adjustments made:

  • supports speaker of size ... FIXME
  • connectors moved and/or replaced
    • source switch for mux on chassis rear side
    • power connector (was mini usb, now hohlrundstecker? jack) on rear side
  • original status led moved

The 3D model file: bassbox2_r1185.scad (OpenSCAD file format)

Circuit

Original PCB

Simplified block diagram of the original circuit.

[ miniusb_conn ] -> [ ? ] -> [ charger_circuitry ] -> [ accu(1.37V, ?nA/h) ] -> [ Vreg(?nV) ]

                       +--------+
                       | switch |
                       +--------+
                            |
                            v
 +------------------+    +-----+    +-----+    +---------+
 | bluetooth_module |--->| mux |--->| amp |--->| speaker |
 +------------------+    +-----+    +-----+    +---------+
                            A
         +---------+        |
         | line_in |--------+
         +---------+

The central IC, responsible for the Bluetooth part, located on the module board is a ISSC IS1684S (second photo).

Pictures of the main PCB and the Bluetooth module that are part of the Jay-Tech GP503.

BT-Module

Customized PCB

New PCB

Contributors

  • Chassis CAD model by lazlo
Last modified 2 years ago Last modified on Dec 2, 2017, 2:44:54 AM

Attachments (6)

Download all attachments as: .zip