Hi. I just received my particle photon and the relay shield 3 days ago. Particle Photon work like a charm. Now, I put the Particle in on the socket of the relay shield an power it up with a 12V, 2.67A power supply. I load one of the relay example from build.particle.io and flash my Particle and then nothing happen. By nothing I mean I can’t ear any relay clicking at all. I measure the voltage with my multimeter at pin D3, D4, D5 and D6 and can clearly see voltage switching between 0V and 3.3V, but the relay are not activated. This should be a sample task. I already did that kind on project with an Arduino Yun.
Just want some other advices, maybe I overlooked something!