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mob-io-matrix-switch-4x4

4x4 Switch Matrix Module Board

4x4 input switch matrix module board. This MOB can operate at both 3V3 and 5V.

mob-built

Schematic

mob-schematic

PCB Layout

mob-pcb

Bill of Materials

  • paperboard 5x7cm

  • 2 x 4-pin (Molex-KK) data (rows, /cols) connectors

  • 4 x led current limiter resistors 10Kohm

  • 16 x green 3mm led