@Serg2055 as the name says, openhardware.io is for open hardware. You are allowed to sell PCB units, partially or fully soldered boards, but selling source is not an acceptable option. Please include readable schematic and source of your boards or at least gerbers or bom. For all your boards posted on openhardware.io. Thank you !

@suhaila96 Hello I have not seen your question since I reviewed this topics, today. What do you mean about "setup your circuit"? How did you connected you watermark sensor and to what?

@schif Hello, Thanx for you comment. Yes you can use it but use a ceramic capacitor

hello! can you advice how flash this fw in arduino ide with avr isp? not work with atmega without crystal yet