Ok, thanks. I simply connected the pins from the atmega8 to the pin header. Does the rest even matter?What's the "normal" way this is done?
Less easy way is to connect to the IO pins with a breakout cable to the FTDI Basic or ICSP programmer.
I have the ICSP header (MOSI,MISO,SCK,Reset, GND, VCC) on the board. But you can only use this to upload a bootloader?
But I do use the exact same pins to program it via arduino uno (isp)?!
What do I then need the RXD and TXD pins for (besides serial communication)?
PS @pico: I do not own a USBasp or something like that but the arduino with the ISP sketch does the exact same thing, doesn't it?
Thanks for that answer pico. It helped me a lot.I do just use ISP programming then (thats fine). The problem is it does not work. I connected power to my board and connected pin 10-13 and GND from my arduino to the board. I also set the in the arduino IDE to the right (target) board, port and programmer. Uploading still does not work. I am only getting "avrdude: stk500_getsync(): not in sync: resp=0x00" errors.
I realise it has been some time but: Thank you so much!
Any special one that you guys suggest? Should not be too costly though