A cool little AVR PLC

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I recently came across an AVR (Arduino) based PLC controller kit here: https://www.universal-solder.ca/...

Price $39 Canadian 18 i/o's split between 0-10v digital/analog inputs and outputs.  

I would not call this a beginners kit, due to the simple assembly instructions of "install all of the parts" so one needs to be able to identify the parts, the pcb is densely packed.  I did identify one error in the design, the AREF pin on the Arduino module is tied to the VCC rail on the PCB, so the AVR can be damaged by a selection of internal BG reference as noted in my review of the product. 

I'm looking forward to finding a cool project for this low cost kit. 

Jim

 

 

 

FF = PI > S.E.T

 

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seems a bit of an omission to have no access to the UART ?

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awneil wrote:
seems a bit of an omission to have no access to the UART ?

They also have a big brother version that also has SPI and two RS232 ports, based on the Arduino Mega for $69 c$ if you need comm ports...

Would have been nice if those could also be RS485 as well....

 

FF = PI > S.E.T

 

Last Edited: Tue. Dec 7, 2021 - 03:47 PM
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"Dare to be naïve." - Buckminster Fuller

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gchapman wrote:
Double the I/O with Rugged Circuits' PLC shield
  Out of stock!

 

FF = PI > S.E.T