Four channel logic analyzer

If you’ve got a graphic LCD lying around you can build this four-channel logic analyzer with a couple handfuls of cheap components. [Ronald de Bruijn's] design uses a PIC18F4580 to sample up to four logic inputs at a maximum resolution of 2 MHz. He’s included the PCB artwork so that you can etch your own board. Having a logic analyzer around can really make your life easier, allowing you to reverse engineer communication protocols and troubleshoot your own design problems.

[Thanks Juan]

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