[SOLVED] After switching power, Arduino will not connect to Blynk without reset button

Hi, I need your help.
I have an arduino with ethernet shiel to control 8 digital outputs with relay module. If I connect via USB or 5Vdc adapter, when I remove the voltage supply and re-set the voltage supply, I have to press the reset button on the board so that I can connect with blink.
Is there any way to make it automatic?
I appreciate your help.

1 Like

i have the same problem.

What does Serial Monitor show?

Precisely why Arduino are you using?

Do you have an Arduino Due?
I’ve got one and I had to do a small change at the board to avoid this issue.