a note at the beginning. My English is “not the yellow from the egg” not good, so I use a translator.I hope it works anyway.
Well, I have the Velleman K8055N module which works as far as. Now I am looking for a long time for tutorials e.g. for a turn signal.
But now comes my problem. When I connect an external power source, like on the picture, the IC4 gets very hot and started to smoke.
Solder joints are checked and no abnormalities are found. What could still be the problem?
Thanks for your help