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rs485 turn on a relay

DrPickles

By DrPickles,
in AutoIt General Help and Support

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DrPickles

DrPickles 2

Posted
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After googling a large portion of my day away, I found I am stuck

I have purchased a rs485 usb dongle “USB to RS485 Converter Adapter ch340” to be exact

With a r421a08 Relay board. I can turn relays on and off using a python test script.

(https://github.com/Erriez/R421A08-rs485-8ch-relay-board)

 I would like to be able to send commands using autoit.

I have tried to use putty and send commands, but I have no idea how to do so.

 If some one can give an example on how to turn on and off a relay, I would be much obliged.

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careca

careca 278

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It may be possible to convert the code, but i know nothing of python.

I guess you'd have to go through python and find the equivalent in autoit.

Step by step, communicate with the correct port

Edited by careca
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Danyfirex

Danyfirex 786

Posted
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Hello. You just need to find a COM library around the forum. Then send the correct Command to the COM port.

 

Saludos

:hyper: Danysys.com :ninja:

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DrPickles

DrPickles 2

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I imagine that I could turn on the relay with putty if that were the case.

anyone have any ideas as how to do this manually? if I can do it though putty I can do it though autoit.

 

I wonder if the issue is with the relay board and how it expects to be treated more then the serial usb dongle.

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AdamUL

AdamUL 101

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If you want to use PuTTY with the command line, try using Plink.  There are different Plink UDFs around the forum.  Here's the one I used to connect to a Mac computer, but you should be able to use the Plink functions for what you need.  

 

Adam

 

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iamtheky

iamtheky 930

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i think @AdamUL is right.  Here is my flavor of Plink command organization (with bonus pipe to log)

 

  

,-. .--. ________ .-. .-. ,---. ,-. .-. .-. .-.
|(| / /\ \ |\ /| |__ __||| | | || .-' | |/ / \ \_/ )/
(_) / /__\ \ |(\ / | )| | | `-' | | `-. | | / __ \ (_)
| | | __ | (_)\/ | (_) | | .-. | | .-' | | \ |__| ) (
| | | | |)| | \ / | | | | | |)| | `--. | |) \ | |
`-' |_| (_) | |\/| | `-' /( (_)/( __.' |((_)-' /(_|
'-' '-' (__) (__) (_) (__)

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DrPickles

DrPickles 2

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I guess the issue is, I have no idea what to send to this com port plink prompt.

I have tried things like "com4 1 on 3" which translates to send to com 4 channel 1 turn relay 3 on.

Is this an issue with me not sending hex? is Com supposed to be capitalized? do I need to send the relay in binary?

 

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