Arduino pro mini issues

Question

OK, I have been using Arduino Uno, Mega and micro for a while now.

All have USB on the board.

I had ordered some Pro Mini boards a while ago and am just now finally getting to fool around with them.

I got a FTDI232 board to program them with but I am having no luck.

I have followed along with many tutorials online that use these boards with this adapter.

I always get:

avrdude: stk500_getsync(): not in sync: resp=0x00

I have tried a couple different Pro Minis thinking maybe one I had was bad.

I also did do the test with putting a jumper over RX and TX and seeing if I get mirroring in Serial monitor and I do.

I have checked the settings in the com port on my system settings and it seems to be set as the tutorial say.

Anyone have any thoughts what could be my issue?

mcb1 · Accepted Answer

Andrew I think you'll find the answer is here. http://forum.arduino.cc/index.php?topic=217246.0 It also tells how to resolve it. Mark

jw0752 · Answer

Hi Andrew - I checked my notes and here are a couple ideas. First of all, many of the Mini Pros come loaded with "blink" If you hook up power and the LED blinks you will know that the factory was able to load a program and the unit is working. Here is a link to the connections between the Mini Pro and the FTDI board. Check out the comment section for insights.

https://www.sparkfun.com/products/9716

When I hooked mine up I put a 0.1 uF cap in the line from DTR to the Reset on the Pro Mini. This worked for me on my setup.

Once again good luck.

John