A tiny sound card based on the Covox Speech Thing design which includes an LM386 amplifier. I have another design that just has the resistor ladder portion only without the amplifier which can be found here.
##PCB Design software and addons used
- Kicad 4.0.2 or later
Due to copyright problems in the music used, this video can only be viewed on a PC. It is blocked on mobile devices and other platforms.
The picture is of the Rev 2 version with the bug in the limited parallel port grounding. This has been corrected in the Rev 3 gerber but not fabricated.
##Parts required Use Libreoffice to open pcb-covox-amp-bom.ods