I’m thinking about hacking an OpenSprinkler Pi to provide power for a POE powered Wifi station (Ubiquiti NanoStation).
I need 15V, so I’d either add a full wave bridge on the 24VAC and add a 15V buck switching regulator. It’s possible, I don’t need the regulator, if the PicoStation has an integrated switching regulator. I wouldn’t be surprised if it does, since it’s designed to operate on the end of a potentially long ethernet cable….
I could alse just use the rectified voltage from the OpenSprinkler Pi board, with or without another switching regulator.
But, I was surprised to see only 1/2 wave rectification on the OpenSprinker pi board. Seems like the extra diode for full wave rectification would reduce the required filter cap size significantly.
Also, the rectifying diode is 3000 volts. Is this for surge protection? Won’t the TVS protect adequately?
I don’t see the parts likst for V1.42+. The latest I see in the downloads section is for V1.2.
Are the rectification parts the same in V1.42+?