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hardening Arduino IO for industrial use

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snarkysparky:
I need to use an Arduino mega 2560 for a piece of lab equipment.  But CPU IO is not hardened enough for running IO
around a machine I believe.  So I need an interface board to buffer the IO. 
I don't want to build it myself, so does anyone know a source to buy this.  Why is it not a commonly available thing.
All it needs to be is some ULN2003 buffers on input and output with relays.

And no i can't change to another platform.  So sorry for the XY question.

paf:

You can buy one rugged Arduino Mega from here:
https://www.rugged-circuits.com/10-ways-to-destroy-an-arduino/

tsman:
There are several of them around. Search for "Arduino PLC shield" e.g. https://www.industrialshields.com/shop/category/ethernet-plc-1

Won't be cheap though.

[edit]Linked to the wrong one. The Ethernet models have a ATmega2560 inside. The 20 I/O ones have a ATmega32u4 inside.[/edit]

Kalin:

--- Quote from: tsman on January 18, 2019, 03:30:38 pm ---There are several of them around. Search for "Arduino PLC shield" e.g. https://www.industrialshields.com/shop/category/20-i-os-plc-2

Won't be cheap though.

--- End quote ---
As someone who uses PLC's in industrial regularly. Those are an order of magnitude cheaper than a real PLC.

Sent from my SM-G965W using Tapatalk

coromonadalix:
I use some plc too, but i've seen some very well made arduino shields, with opto coupled inputs outputs, current llimited / input protection diodes

The given link :  https://www.industrialshields.com/shop/category/20-i-os-plc-2
Is a very good implementations, and multiple communication protocols

This one too: https://www.controllino.biz/

The paf memeber link is very good : https://www.rugged-circuits.com/products/      it will give you the basics
The plc shield seems very well tought and tested, you can stack two of them

Finally  the opened source project : http://www.openplcproject.com/
                                  Getting started : http://www.openplcproject.com/getting-started-arduino

An engineer at my job told me this link, he's adding up this system to a filament mahine we use 24/24h  ???


Other open source infos and coding ? :  https://www.open-electronics.org/arduino-as-a-programmable-logic-controller-plc/

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