avrdude: stk500_program_enable(): protocol error, expect=0x14, resp=0x50avrdude: initialization failed, rc=-1 Double check connections and try again, or use -F to override this check.avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51
You need some decoupling caps on the VCC/AVCC pins.You also need to connect FTDI's input pin CTS to Gnd so it knows the chips is waiting for data.
I connect it because the Promini has the CTS pin grounded. The FTDI Basic connects the CTS header pin to the FTDI CTS pin.So, used or not, that's the way I connect it, and I never have problems with USB/Serial interfacing.
Yes, thats right, I have caps on both sides (0,1µF). On my FTDI there os GND, CTS, VCC TXD RXD and DTR. I thought DTR is the auto reset pin so I connected DTR to Pin 9 with a 0,1µF cap.This is my FTDI programmer: http://www.ebay.de/itm/230820610037?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_500wt_1414Again, thanks a lot for your help!