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Topic: Uploading to Uno r3 with serial (Read 680 times) previous topic - next topic


My arduino uno seems to have a dead usb to serial chip. I was wondering if I could use the RX/TX pins to program it using a serial port on my computer? Any advice would be greatly appreciated.


You would need an RS232-to-TTL Serial conversion chip to do the level shifting.
You can get an FTDI USB-to-TTL Serial cable for about $20.
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Or you could use one of these cheap USB/Serial converters:



Thanks, I found schematics for the rs232 to TTL conversion, and I have all the parts lying around, so I think I will just make one.

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