Front Panel V2 Assembly Sheet Rev 1

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Parts List

Qty	Value	RefDes		Qty	Value	RefDes
4	10K, 1/4W	R3-R7		32	LED (NOTE 3)	DS1-DS32
2	2.2K, 1/4W (NOTE 1)	R1,R2		1	HEADER, RT ANG, 2X2	J6
32	1K, 1/4W (NOTE 2)	R5,R8-R38		1	HEADER, RT ANG 1X4	J3
4	MCP23017-E/SP	U1-U4		1	HEADER, RT ANG, 1x2	J1
32	SW_Push	SW1-SW32		1	HEADER, RT ANG, 1x5	J2

Notes

Note 1 - R1 and R2 are 2.2K I2C terminators. Needed for 3.3V operation and 400 KHz operation.
Note 2 - 1K ballast LED resistors. Pick value for how bright you want LEDs at operating voltage.
Note 3 - LEDs - I like diffused Orange LEDs. I don't like clear LEDs.

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