4 layers536.5 × 385.7 mm

Boards in 3 GitHub repositories, designed in KiCad, that use the LM4880M by Texas Instruments (-40℃~+85℃ 2-Channel 2.7V~5.5V 325mWx2@8Ω Class AB SOIC-8 Audio Amplifiers ROHS). See how each wires it, with its parts, size, README and files; the LM4880M’s symbol, footprint and pinout are on its own page.


nanamitm/YM2151-Shield-ver2
YM2151 Shield hardware project for KiCad 10


lgugelmann/HD6301_thing
I recently received a few samples of a Hitachi HD6301V1 in a DIP-40 package. It's a 1MHz 8bit CPU derived from the Motorola 6801 with a few extra instructions.