I really hope you can help me out. I used my arduino uno to play around but lately tried to use it to controll some leds. So I did build some stuff with another power source and transistors. I sadly did not get it right on the first try so I had to change several things.
When I wanted to change the sketch on the arduino afterwards to try it out it suddenly did not respond anymore. Now its only an unknown device (unknown hardware ID and everything, cant even find it in the hardware manager, only in printer & co menu) which I cant uploade any sketches too. It used to work perfectly before that and the LEDs (green "On" and orange "L") are still on (not blinking though).
I did read that the "L" Led should be blinking after you pressed the reset button. It doesnt
Is that true? How long do you have to press it?
I really hope you can help me and sorry for my bad english
PS I did search for this problem but nothing did help (until now)
PPS Using Win 7 x64 here