I am having trouble flashing (maybe) my new ifan02 sonoff fan controller. This is my first sonoff so the entire process is new to me. I am using an Arduino to flash, and I am successful flashing it, problem is it never starts up. I have flashed it several times. After the last couple I removed the 3v supply from the Arduino and hard wired the sonoff to AC power. I see a bunch of what looks like watch dog resets? In the serial output. I am assuming it’s just boot looping but I am not sure why.
Can someone help me figure this out? Anyone else use an Arduino to get theirs flashed?
Do not connect the sonnoff to AC power when flashing. This is a very good way to kill your com port and possibly other things including you.
Actually I just read the wiki for the ifan02, seems this one is isolated so you should be ok. And in fact you probably need to as the USB adapter can not supply enough current.