OpenSprinkler pi (OSPi) One

**A NOTICE: OSPi does NOT work with Raspbian Debian Version 13 “Trixie”, please use Debian Version 12 “Bookworm” ** 

VERSION 2.0 with 8 analog sensor inputs, OLED display and 3 control buttons

kit:

OpenSprinkler pi (OSPi) is an expansion card for Raspberry Pi (Zero W/WH; RPi 1 Model A+ / B+; RPi 2; RPi 3; RPi 4). This allows RPi to directly access and control sprinkler valves. We cannot recommend the RPi 5 due to the high power consumption, use the USB-C power supply in addition.

This product requires previous experience with RPi as you can use the OSPi-Must install software by yourself. If you are looking for a sprinkler controller that comes ready to use, please see the fully assembled one OpenSprinkler 3.3

Overview:

OSPi is designed as an expansion board that uses RPi's GPIO pins to directly control sprinkler valves without an additional layer of microcontroller and Ethernet controller. In other words, it's a circuit board that allows an RPi to communicate directly with sprinkler valves.

Characteristics:

Single power supply design - same 24VAC sprinkler transformer powers both sprinkler valves AND RPi.
Rain/flow sensor connector, zone expansion card connector and surge protection.
Expandable – a OSPi supports 8 zones; expandable to 72 with OpenSprinkler Zone expansion boards.
Control from anywhere - use a modern browser or use our free apps for iOS, OSX, Android, Kindle Fire, Windows 8, Chrome and Firefox.
Automatically adjust watering time based on weather – Use online weather data to automatically adjust watering time based on temperature, humidity and rainfall.
Open source and customizable.

Package includes:

• A ready-made and tested one OpenSprinkler Pi board.
• Connection plug (1x Green8, 1x Green6, 1x Orange)
• Spacers and screw connectors including screws
• OLED display

Packages does NOT include – you will also need:

• A Raspberry PI (Zero W/WH; RPi 1 Model A+/B+; RPi 2; RPi 3; RPi 4)
• A housing (if you have a 3D printer, print it yourself, see github) – or choose our enclosures. Attention! Cases of versions 1.x do not fit on the 2.0!
• 24VAC power supply. If you have an existing power supply from your (old) watering computer, you can reuse it. We recommend the “standard power supply”  24VAC 1,5A 36VA power supply.
• If you want to use the Raspberry for other functions, e.g. as a media center or for data acquisition, you will also need a screen with HDMI connection, a USB keyboard and USB (wireless) mouse.

Optionally available:

• Housing for wall or DIN rail mounting (DIN rail mount required)
• Power supply 24V AC to power the solenoid valves AND the Raspberry Pi.

Note: Only suitable for people with Raspberry PI knowledge! For example, detailed knowledge is required for network integration.

On the other hand, with our product OpenSprinkler 3.0 AC or DC the WiFi or Ethernet integration very easily solved.

Remember, the Raspberry Pi has a Linux operating system and requires basic knowledge for installation and maintenance.

Also, various components of the Raspberry Pi are not designed for winter temperatures, so you should dismantle it in winter.

Power adapter: Standard power supply is a 24VAC 1,5A power supply 36VA

Max=3A (onboard fuse)

Other suitable power supplies can be found here: Plug Power Supplies and DIN rail power supplies

NEVER connect MORE THAN ONE solenoid valve to ONE OpenSprinkler exit on! OpenSprinkler can switch several outputs at the same time, so it is not necessary to combine several valves. Exception: You use a relay for switching.

System Requirements

Further information (manual, circuit diagram) here: manual and downloads

Note: Without a 24VAC power supply, the OSPi do not control a solenoid valve!

Note: Without a housing, the OSPi do not mount in our IP65 housing on a DIN rail!

Note: Currently only the OpenSprinklerShop-Software the display and the analog interfaces!

**A NOTICE: OSPi does NOT work with Raspbian Debian Version 13 “Trixie”, please use Debian Version 12 “Bookworm” **