breadboard adapter for blk-md-spk-b

simple breadboard adapter for cheap BLK-MD-SPK-B module from ebay based on OVC3860 with 3.5mm jack adapter, here is it in action:

 schematics/board are on my github

few pictures:

kicad library for BLK-MD-SPK-B is also on github

copy of pdf with OVC3860 AT commans used in video (AT#MD AT#ME....)