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Using my Arduino as a Serial TTL - USB convertor

Posted: Fri Oct 31, 2014 10:27 am
by shanevi
Probably already known by all but I thought it was quite a neat dirty hack.... :)

I didn't have a spare Serial to USB convertor on hand for a recent project. So decided to try my arduino mega (Should be able to do with others also)

connect wire from Reset to Ground. This will hold all Atmel pins in high-imp tristate

Use TX/RX and +5v/+3.3V/Gnd to project using serial IO
USB into computer

Connect up using whatever means you use. PuTTY etc...

ttl.jpg
Arduino as Serial-USB interface to PIC32 project
ttl.jpg (67.75 KiB) Viewed 5923 times

Re: Using my Arduino as a Serial TTL - USB convertor

Posted: Fri Oct 31, 2014 9:22 pm
by parkview
Nice one. No, I didn't know that.

Re: Using my Arduino as a Serial TTL - USB convertor

Posted: Sat Nov 01, 2014 1:05 pm
by shanevi
I think ou can do same with Uno etc...
in that case should be able to either remove the DIP IC, or do the same.. Tie reset to Ground.

Tight budget always allows one to think further outside the box ;)