Hi everyone. 5 days ago I started testing my board in home automation. Worked like a charm for 2 days switching gate controller and alarm via NPN transistors… But now everything stopped. Board is alive, but voltage output is very low when I try to switch any port to HIGH (0.1V). I got confused: In the past It was able to excite a transistor base, but now barely lights a small led. I flashed firmware at least 2 times, but didn’t work. What happened? Can I use some circuit to amplify this voltage?