The main wiki page is here:
http://www.tiaowiki.com/w/TIAO_Smart_Sprinkler
Follow the above link, you can find the user manual, hardware connection diagram and controller software download link.
TSSPi Controller Software Features
- Easy setup - no monitor nor keyboard required for raspberry pi, only a network cable or USB wifi adapter
- Web interface - program the watering schedule using your PC or mobile phone
- Supports complicate watering schedules
- Unlimited watering schedules
- Allow seasonal adjustments
- Weather API access - automatically adjust watering amount/time by checking online weather forecast (rain/wind etc)
- Control your sprinkler stations from anywhere in the world
- Software supports unlimited stations
- Controls 1 to 16 stations(or 1 master station + 15 stations)
- Supports rain sensor
- Open source software - which means you can add your own function to the controller!
- System ON/OFF hardware switch
- Status LEDs (power, Pi power, system on, system running)
- Tap start/stop - simply tap on the screen to start or stop the stations
- Recommended browser - Google Chrome
