2 layers

Boards in 1 GitHub repository, designed in KiCad, that use the ST232BDR by STMicroelectronics (-40℃~+85℃ 10mA 2 2 220Kbps 4.5V~5.5V Transceiver Yes SO-16 RS232 ICs ROHS). See how each wires it, with its parts, size, README and files; the ST232BDR’s symbol, footprint and pinout are on its own page.
