I did the blink test without delays to get informations about the speed that a loop can have. I got 117,32 kHz pulse on the oscilloscope with the usual 16MHz frequency of the arduino uno. My question is: is there a IO switching delay by the arduino uno (328) or is this a lost of the writedigital commands? The second question would be: is there another well known software like the AVR Studio that can upload the firmware with the arduino bootloader?
Best regards, SirNoName