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Author Topic: USB to Serial for custom Arduino  (Read 333 times)
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I want to add USB to Serial (to program chip) to my custom PCB (ATMega644p) so I don't have use FTDI adapter.  What would be least expensive solution? Preferably thru the hole and as little footprint as possible....
I looked at ATmega8U2 that's used by Uno boards, and was hoping there's something easier to implement out there... smiley
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CP2102 module with DTR connected to 0.1uF cap to the reset pin.

MIKROE483 from mouser.com is one of the least expensive non-ebay solutions for an FTDI module.

http://www.mouser.com/ProductDetail/mikroElektronika/MIKROE-483/?qs=%2fha2pyFadugsEwyLV5fFyIWdPbushEDhRSvnBE0ODG8%3d

Here's one on a card I made
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Not bad! Thank you!
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