OpenSprinkler Pi (OSPi)

OpenSprinkler Pi (OSPi)
OpenSprinkler Pi (OSPi) OpenSprinkler Pi (OSPi) OpenSprinkler Pi (OSPi) OpenSprinkler Pi (OSPi)
Product Code: ospi_v14
Availability: In Stock
Price: $75.00

5 or more $60.00
10 or more $54.00
25 or more $51.00
50 or more $48.00
100 or more $45.00

Available Options

OSPi Options:

* Power Supply Option:

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Please take a look at the OSPi v1.43+ User Manual before ordering. Note: the Plus version works for RPi 1 A+, B+ or RPi 2 and 3. It does NOT work with RPi 1 Model A or B. The previous OSPi Standard version has been discontinued and will not longer be stocked.

OSPi now comes with a set of laser cut acrylic enclosure, please check the Enclosure Assembly Video

Comparisons of OSPi with other OpenSprinkler line of products can be found here.

OpenSprinkler Pi (OSPi) is a sprinkler / irrigation extension board for Raspberry Pi (RPi). It allows RPi to directly access and control sprinkler valves. This is version 1.43+ with laser cut acrylic enclosure. The built-in components include on-board 24V AC to 5V DC switching regulator, solenoid drivers, DS1307 RTC and battery, PCF8591T 8-bit A/D D/A converter (4 input and 1 output channels), fuse, rain sensor terminal, one general-purpose relay, and per-station transient voltage suppressor (bidirectional TVS).

Before placing an order, please scroll down to check all details on this page. Thanks.

Video Tutorial

Update: OpenSprinkler new mobile app (native version) is now available on all platforms. Search 'opensprinkler' in iOS App Store, Android Play Store, or Windows Phone Store, then download and install the app. Additional details can be found in this blog post.


  • Input voltage: 22∼28V AC.
  • Maximum number of zones / stations: no software limit.
  • Maximum output current per zone / station: 800mA continuous (@24VAC), 8A impulse / inrush.
  • Maximum current supply to RPi (on +5V line): 500 mA.
  • Controls 8 zones (stations). For additional zones, buy OpenSprinkler Zone Expansion Board.
  • Package includes one assembled and tested OSPi board, separation pillars, terminal blocks, 8-pin and 5-pin cables, and enclosure. Enclosure is included in the package.
  • Does NOT include 24V AC sprinkler transformer or valves, which are available at or local home improvement stores.
  • Does NOT include Raspberry Pi.
  • This is a fully open-source product. Software code and hardware design files are available at Rayshobby GitHub.

Related Products:

  • Check the Related Products tab above.



Technical Details
Operating Voltage 22 to 28V AC
Output Current 500mA @ 5V to power RPi
Built-in Components 24V AC to 5V DC converter, RTC with battery, rain sensor terminal, 4-channel ADC, fuse, mini-relay, per-station TVS.
Maximum # of Zones No software limit
Max. Current Per Zone 800mA continuous (@24VAC), 8A impulse / inrush
Package Inclues One assembled and tested OSPi board, screws, terminal blocks, and product case. (===DOES NOT=== include 24V AC sprinkler transformer or valves, which are available at or local home improvement stores). (===DOES NOT=== include Raspberry Pi).
Dimension and Weight
Size 135mm x 85mm x 42mm (5.3" x 3.3" x 1.65")
Weight 170g (6.1oz)

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