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I am in the middle of an automation project and suddenly after completing one stage of my assembly, I now need to scale it. So my computer which until now was sending data to only one arduino UNO can send to multiple arduino uno's, also I am seeking an advice, I am using up all the digital pins on my arduino Uno and this makes me think if I should upgrade to arduino mega or leave it the way it is. The communication protocol I am using is UART which is done through USB from my computer to the board, so can I just use a USB hub to handle this issue?

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    If you’re sure that you won’t expand your project and need more pins, why upgrade? If you have lots of free analog pins you can use them as digital pins too. Commented Apr 3, 2021 at 11:06
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    Yes, if course you can use a USB hub to connect multiple Arduinos to your PC at once. If you need to upgrade to a mega depends on if you need more pins
    – chrisl
    Commented Apr 3, 2021 at 11:07
  • Thank you so much I definitely not need more pins on one communication as the more the messy it gets thats why I tried sticking to Uno to the least, I would rather get multiple unos so troubleshooting doesn't become a challenge. Commented Apr 3, 2021 at 11:18

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