Hi, I want to do the project Uplug. I have all materials and I connected all pin and other cable like in this schema shows http://www.udoo.org/ProjectsAndTutorial ... with-udoo/ I connected a light to test the project but the light remains off. I have too some questions. Why we use the out-2 of the relay shield and not the first? And why we have to connect the current sensor on 3.3V of the relay shield? The current sensor receives 5V, so we have to connect it on the 5V of the relayshield no? So I don't know why my project doesn't work. Can someone help me please? Thank you Marie