20. Parallel port monitor

Status: OK

It is used for monitoring the parallel port signals.

20.1. Images

20.2. Schematic

20.3. Board

Normal, bottom mirrored, wires only:

20.4. Partlist

part	value	position
HIGH	LB10	(0.45 2.55)
HIGH1	LB10	(1.45 2.55)
R1	1k	(0.4 2.25)
R2	1k	(0.9 2.25)
R3	1k	(0.2 2.25)
R4	1k	(0.3 2.25)
R5	1k	(0.5 2.25)
R6	1k	(0.6 2.25)
R7	1k	(0.7 2.25)
R8	1k	(0.8 2.25)
R9	1k	(1 2.25)
R10	1k	(1.1 2.25)
R11	1k	(1.2 2.25)
R12	1k	(1.3 2.25)
R13	1k	(1.4 2.25)
R14	1k	(1.5 2.25)
R15	1k	(1.6 2.25)
R16	1k	(1.7 2.25)
R17	1k	(1.8 2.25)
SV1		(1 0.25)
X1		(2.175 1.525)
X3		(-0.175 1.525)

20.5. 3D view

20.5.1. Front

20.5.2. Right side

20.5.3. Left side

20.5.4. Bottom

20.6. Sources

original idea