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pics
README.md
blk-md-spk-b_breadboard_adapter-cache.lib
blk-md-spk-b_breadboard_adapter.cmp
blk-md-spk-b_breadboard_adapter.kicad_pcb
blk-md-spk-b_breadboard_adapter.kicad_pcb-bak
blk-md-spk-b_breadboard_adapter.net
blk-md-spk-b_breadboard_adapter.pro
blk-md-spk-b_breadboard_adapter.sch
blk-md-spk-b_breadboard_adapter_dual_side_board.kicad_pcb
blk-md-spk-b_breadboard_adapter_dual_side_board.pro
bluetooth_breadboard_adapter-cache.lib
schematics.png

README.md

simple breadboard adapter for cheap BLK-MD-SPK-B module from ebay based on OVC3860 with 3.5mm jack for headphones, microphone and buttons.

video (ver. 1.0): https://www.youtube.com/watch?v=mN-LFUUrpa8

blog (ver. 1.0): http://kovo-blog.blogspot.sk/2015/01/breadboard-adapter-for-blk-md-spk-b.html

boards are for sale(or kit, whole product...), contact me if you are interested, or buy on tindie:

I sell on Tindie

Schematics:

Photos

top view, assembled unit

bottom view, assembled unit, with BT module soldered (silk screen marking of C3/R4 was switched, fix with perm. marker)

assembly plan (fixed silk screen):