PI-SPI-DIN-8DI Raspberry Digital Input I/O Module

This is the DIN rail mountable version of the Pi-SPI-8DI Isolated Digital Input I/O Module.

The PI-SPI-DIN-8DI has 8 inputs that can either DC or AC (Max 24 V) and are optically isolated.

The design is based on the Microchip MCP23S08 IO Expander. Each MCP23S08 has 4 addresses using the same SPI Chip Select line, meaning 4 modules (32 Inputs) can be used simultaneously.

Each I/O Module in the PI-SPI-DIN series has two 16 Pin GPIO ports that carry power, SPI, I2C and 5 Chip Selects from the main PI-SPI-DIN-RTC-RS485 Module. Also, each module has it's own 5VDC switching power supply and 3.3VDC LDO regulator.

Block Diagram:

Specifications:

• Two 16 Pin GPIO Ports (Power, SPI, I2C and 5 Chip Selects)
• 5 VDC 0.5A Switching Power Supply (9 to 24 VDC Input)
• 3.3VDC LDO regulator
• Terminal Blocks are rising clamp cage screw type (no leaf springs)
• Blue LED indicators for power
• MCP23S08 I/O Expander with 4 Address Selects
• Green LED ON Indicators for each Input
• All inputs are optically isolated and can accept either VDC or VAC inputs, Max 24V
• PCB Dimensions: 2.7" Wide x 3.42" Long

Mounting Styles:

Each PI-SPI-DIN I/O Module has four mounting styles available:

-PCB

-CLIP PCB on DIN rail mounting clips

-ENC Horizontal DIN Enclosure

Dimensions: 3.51" Long x 2.975" Wide x 1.11" High

-V Vertical DIN Enclsoure c/w Removable Terminal Block

PI-SPI-DIN-8DI Accessories :

All PI-SPI-DIN I/O Modules come complete with interconnect ribbon cables and all necessary hardware based on enclosure style.

Typical Application with pcb DIN clip mounting:

Node-RED

The PI-SPI-DIN Series of I/O Modules have Node-RED support. Please visit

Node-RED and the PI-SPI-DIN Series

for instructions.

PI-SPI-DIN GPIO Connector Pinout

Downloads

PI-SPI-DIN-8DI Schematic

PI-SPI-DIN-8DI PCB Layout

For Python Sample Code, please visit:

PI-SPI-DIN-8DI Python Code Samples

Basic Python "Read" Digital Inputs Program:

from time import sleep
from widgetlords.pi_spi_din import *

init()
inputs = Mod8DI(ChipEnable.CE2)

while True:
    print(inputs.read())
    sleep(0.5)

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