Omega2 requires solid 3.3V stable voltage output at 300mA. And one more critical spec... power supply needs to be able to handle in-rush current during WiFi power-up without voltage drop. That fleabay $0.99 item needs a large capacitor (I recommend 220uF 6.3V) on its input side and a large capacitor on its output side (I recommend 470uF 6.3V.) The link between that unit and Omega 2 cannot be too thin gauge (I recommend 22 ga) and definitely use soldering as opposed to using DuPoint connectors. ccs_hello