Thank you for fast replay. Problem is solved. I have to unsolder small capacistor (DTR Reset Capacistor). Arduino Nano clone v3 now don't reset on connect and respond to commands without delay. Filter wheel now works great.

FWD5Q81IAINHLRP.LARGE.jpg?auto=webp&frame=1&width=1024&height=1024&fit=bounds

Read More...