Uploading sketches to a standalone arduino uno on a bread board

Other Hardware 3rd Party Boards
1

I have one of these: http://www.ebay.com.au/itm/251175182899?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

I am trying to figure out how to upload sketches to the atmega chip.

So far, if I connect the Rx and Tx of the atmega chip and the FT232 appropriately and manually hit the reset button on the atmega when the sketch finishes compiling, then I can successfully upload.

But I can't figure out how to use the CTS and/or DTR pins on the FT232 to automatically reset the atmega chip.

If I connect either of these to anything then I get an upload error message along the lines of the atmega not being in sync.

2

DTR thru 0.1uF cap to Reset pin.
10K pullup resistor on Reset pin.
DTR going low is turned into a reset pulse by the cap and resistor.

3

For the Arduino auto reset feature to work you need to add a series .1ufd capacitor between the DTR pin and your AVR chip's reset pin. Also a 10k pull-up resistor from +5vdc to the AVR reset pin is recommended.

CR beat me again :wink:

4

CrossRoads:
DTR thru 0.1uF cap to Reset pin.
10K pullup resistor on Reset pin.
DTR going low is turned into a reset pulse by the cap and resistor.

BEAUDIFUL! I am all set.
Thanks mate!

5

No problem. Can see that in my sleep these days.