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I am trying to replicate a basic Arduino Pro Micro. Later I will add some LEDs and some digital sensors to my PCB. For now my question would be, if this PCB design covers all the necessary parts to act as an Arduino?

I will use a USBasp to bootload and a FTDI232 for uploading my Arduino sketch.

I have never designed a PCB so I really don't have a clue. I have simply brought together schematics from Arduino's website and videos I have found online.

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  • On some schematics I have seen some more decoupling capacitors connected between GND and VCC. Would that be necessary or have I added enough ? Maybe someone could explain to me why I would need more than one decoupling capacitor between GND and VCC
    – LMJ
    Commented 2 days ago
  • Do any of these Q+As help? electronics.stackexchange.com/search?q=decoupling+capacitor
    – VE7JRO
    Commented 2 days ago
  • 1
    @LMJ please update your question, and delete the comment ... this site is not a chat forum
    – jsotola
    Commented 2 days ago
  • Please do not double-post if your other question is closed. Instead read the comments and act accordingly, please. Done well, your question will be reopened.
    – the busybee
    Commented 2 days ago
  • 1
    This question is similar to: ATmega328 PCB schematic. If you believe it’s different, please edit the question, make it clear how it’s different and/or how the answers on that question are not helpful for your problem.
    – the busybee
    Commented 2 days ago

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