Been a user of of OpenSprinkler pi for a few years. Bought the pi unit from Ray a few years ago but wanted to see if I can make another one for a small zone.
I bought a Raspberry pi (1) model B and a 4 port relay. Not sure if I need any other hardware other than my valve.
I found the site https://github.com/OpenSprinkler/OpenSprinkler-Firmware but wasn't sure if the correct files and version are there. I'm know a little about coding and have used linux years back.
Would you please help me complete this project? Questions I have at this point is, what lightweight OS do I need for the pi? what services? is a 2GB SD card sufficient? what code do I need to download and compile? How about the smartphone app?
Would appreciate some guidance in completing this project. Would be a great experience for me and my son to take part in.