I'm trying to upload sketches to an Atmega328-PU with the Arduino IDE. The microcontroller already has the boot loader installed, I can upload sketches when I use the FTDI chip from the arduino (Like said here: http://arduino.cc/en/Tutorial/ArduinoToBreadboard)
Now I have a PL2303HX chip (http://imgur.com/QTCZJYi). The pin layout from top to bottom: 3.3v, 5, GND, RXD, TXD. The top three pins above the chip are a mystery to me, but it seems like they change the serial signal power between 3.3v and something else (2.5v?).
The problem is that when I connect everything to my atmega (Power, ground, PL2303 RXD to Atmega TXD, PL2303 TXD to Atmega RXD) and try to upload sketches, the Arduino IDE gives me the programmer not responding error. When uploading I hold the reset on the atmega first, let the IDE compile and as soon as it says uploading I release reset. No luck though.
I tried switching the jumper, or removing it all together. Every post I find on the internet just seems to state it either works, or I should hold the reset button (Which I already do..) Is there anything I'm doing wrong?
If needed I can upload some pictures of the atmega circuit as well. If there's anything else your welcome to ask as well.
Thanks in advance :)