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Opto Input

The IO Port Input plugin provides 8 opto-isolated input channels.

Bare ioport opto input circuit board

Description [size] Format
Circuit schematic [13.2KB] Adobe Acrobat PDF
PCB layout [97.4KB] Adobe Acrobat PDF

Interface

The plugin is designed to interface with the IO Port lettuce plugin board via one of its IO port connectors.

Inputs

Input connections are made via screw-terminals as labeled on the board.

Component list

Below is a full list of components required to build the IO Port plugin board.

ICs

ID Value Package Description
U1 4N25 DIP6 Optocoupler
U2 4N25 DIP6 Optocoupler
U3 4N25 DIP6 Optocoupler
U4 4N25 DIP6 Optocoupler
U5 4N25 DIP6 Optocoupler
U6 4N25 DIP6 Optocoupler
U7 4N25 DIP6 Optocoupler
U8 4N25 DIP6 Optocoupler

Connectors

ID Type Description
J1 2x5 100mil R/A socket IO Port socket
J2 2-way 5mm 16A terminal block Input connections
J3 2-way 5mm 16A terminal block Input connections
J4 2-way 5mm 16A terminal block Input connections
J5 2-way 5mm 16A terminal block Input connections
J6 2-way 5mm 16A terminal block Input connections
J7 2-way 5mm 16A terminal block Input connections
J8 2-way 5mm 16A terminal block Input connections
J9 2-way 5mm 16A terminal block Input connections

Resistors

ID Value Package Description
R1 330R 0805 Input limiter
R2 100K 0805 Opto base resistor
R3 10K 0805 Opto collector resistor
R4 330R 0805 Input limiter
R5 100K 0805 Opto base resistor
R6 10K 0805 Opto collector resistor
R7 330R 0805 Input limiter
R8 100K 0805 Opto base resistor
R9 10K 0805 Opto collector resistor
R10 330R 0805 Input limiter
R11 100K 0805 Opto base resistor
R12 10K 0805 Opto collector resistor
R13 330R 0805 Input limiter
R14 100K 0805 Opto base resistor
R15 10K 0805 Opto collector resistor
R16 330R 0805 Input limiter
R17 100K 0805 Opto base resistor
R18 10K 0805 Opto collector resistor
R19 330R 0805 Input limiter
R20 100K 0805 Opto base resistor
R21 10K 0805 Opto collector resistor
R22 330R 0805 Input limiter
R23 100K 0805 Opto base resistor
R24 10K 0805 Opto collector resistor

Misc

ID Value Package Description
D1 1N4148 300mil axial Input protection
D2 1N4148 300mil axial Input protection
D3 1N4148 300mil axial Input protection
D4 1N4148 300mil axial Input protection
D5 1N4148 300mil axial Input protection
D6 1N4148 300mil axial Input protection
D7 1N4148 300mil axial Input protection
D8 1N4148 300mil axial Input protection
Updated on 2010-04-25 13:39:24 +0000 | Requested on 2020-10-27 11:47:56 +0000