Anybody ever tried an Arduino Nano?
I am facing this little strange behaviour that would really like to understand!
http://forum.arduino.cc/index.php?topic=336694.new#new
It sounds like this got flashed with something similar to the trinket bootloader which, when it starts up, spends 5-10s “listening” for a firmware update and if one doesn’t start then it drops back into normal running. (I don’t know if this is actually something the nano’s bootloader wants to do normally)
Yes, it must be the bootloader. Different arduino’s different wait-time.
You could flash a “no-wait” bootloader into the arduino. that would solve this “by design” behaviour.
It’s not the way my Nano’s work. Where did you get your board?
@Mike_Thornbury it s possible to program a new bootloader easily enough. I’ve definitely put the wrong bootloader on before.
thanks guy for participating!
My nano is a clone.
Could somebody guide me in the process of modifying the bootloader? I´ve never done such thing.
Thanks!
Try the optiboot Bootloader.
https://code.google.com/p/optiboot/
With this bootloader, it wil skip the wait for a sketch upload and immediately execute the internal sketch.
Only when the reset button is pressed iet will go into “wait” bootloader mode. With power cycle it will return to no-wait.
It should work on all atmel 328, so also cheap chinese clones of arduino nano pro.
if your arduino has a an avr pinout (http://obd2.tui21.com/img/minibox/arduino-nano-v3.0-avr-atmega328-p-20au-board20134361.jpg) then you could flash the bootloader with a cheap (chinese 
) avr usb adapter.
http://www.ebay.nl/itm/351452782591?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
If your Arduino clone has no ICSP connector or pinout, read the link from the reply above or look at this link:
great guys. thank you so much!