Hey everyone! First time caller, long time listener…
I’ve dipped my toe into the OpenSprinkler world recently and scooped up a used unit to get familiar with it. It is version 1.3u of the hardware, thus I assume that I bought a DIY kit put together by the seller.
Version 1.3u is indeed a DIY version that the user had to solder it up. It was from several years ago and has long been discontinued. I am not sure if the current OpenSprinkler app would still work with it, but all OpenSprinkler controllers have built-in user interface and you can directly access them in a web browser without using the app.