I have this PCB where I placed my Arduino. The RX and TX pin are connected to another component via PCB traces and female headers. I have not connected the component to the PCB so these pins are "open" (I have checked the PCB traces to make sure they connect directly to just a female headers pins on…

RX-TX Pin Upload Error EVEN WHEN RX-TX Pin Are Open

sterretje October 12, 2021, 1:41pm 2

Please provide a schematic. Which Arduino?

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