Hey György,

oh man... that wasn´t worth to open a topic... I just grab a NPN and it works. Thank you very much.

Hello togehter,

i try to flash a hex file to a Atmega328 (installed Arduino Bootloader) without the use of the Arduino IDE.
First try: Use Arduino Dock --> send hex file to omega --> flash .hex file --> Flash works
Next step: Take this omega and place it on an Onion Breadboard Dock and wire a Arduino Mini based on this instruction: https://docs.onion.io/omega2-docs/arduino-dock-2.html. Try to flash again -->

What could be the problem?
ResetPin: The Onion Arduino Dock uses a transistor to pull the Atmega Reset to Ground but Omegas Pin 19 goes to 0V shortly after starting the flash. So I thougt it should work without that transistor. Additional i tried to push Reset by hand.

SPI Connection: I do not use any level shifter but run the mini on 3.3V.

Atemga328: Is there a special script running on the atmega on the Onion Arduino Dock?

Do you have a hint for me?

Thanks.
Kind regards.