OSPI+

OpenSprinkler Pi (OSPi, AC powered)

5 out of 5 based on 2 customer ratings
(8 customer reviews)

$78.00

OpenSprinkler Pi is an extension board for Raspberry Pi (RPi) 1 Model A+ / B+ or RPi 2. It allows RPi to directly access and control sprinkler valves.
This version WILL NOT fit RPi 1 Model A or B.

NOTE:
– Raspberry Pi is NOT included, LCD is NOT included.
– 24VAC transformer is an optional add-on and NOT included by default.
– Enclosure is not tailored for the Raspberry Pi.

International customers: check our Global Distributors page to find out if you can purchase our products locally.

SKU: OSPi+ Category:

Product Description

OpenSprinkler Pi (OSPi) is an extension board for Raspberry Pi (RPi) 1 Model A+ / B+ or RPi 2. It allows RPi to directly access and control sprinkler valves.
This version WILL NOT work with RPi 1 Model A or B.

  • Download OSPi v1.4 User Manual
  • This product requires prior experience with RPi, since you will need to install OSPi software on your own. If you are look for a sprinkler controller that works out of the box, please check out the fully assembled OpenSprinkler.
  • Comparisons of OSPi with other OpenSprinkler products.

Overview:

The idea of OSPi was first realized after many users were setting up RPi to work with OpenSprinkler. There are good reasons to do so, for example, to enable logging, to customize the default Javascript files, and to allow more advanced features learning-based control. OSPi is designed as an extension board that makes use of RPi’s GPIO pins to directly control sprinkler valves, without an additional layer of microcontorller and Ethernet controller. In other words, it is a circuit board that allows an RPi to directly interface with sprinkler valves.

Features:

  • Single power supply design — the same 24V AC sprinkler transformer powers both sprinkler valves and RPi.
  • Built-in real-time clock (RTC), A/D D/A converter (4 input and 1 output channels), rain/flow sensor terminal, zone expansion board connector, and transient voltage protectors.
  • Expandable — one OSPi supports 8 zones; expandable to 56 with OpenSprinkler zone expansion boards.
  • Control from anywhere — use any modern browser, or use our free apps for iOS, OSX, Android, Kindle Fire, Windows 8, Chrome, and Firefox.
  • Automatic weather-based water time adjustments — use online weather data to auto-adjust water times based on temperature, humidity and rainfall.
  • Open-source and customizable.

Package Includes:

  • One assembled and tested OpenSprinkler Pi board.
  • Plastic enclosure and screw terminal blocks.

Package DOES NOT Include:

  • Raspberry Pi
  • microSD card
  • 24VAC Transformer (optional add-on)
  • If you have an existing sprinkler controller, you can reuse the transformer.

You may be choosing between OSPi and OpenSprinkler, and curious about their differences. Here is a detailed comparison. OSPi is based on Raspberry Pi (RPi). In order to use it, you must have an existing RPi and install the necessary software. There are three proof-of-concept demo programs as shown in the video above. In addition, the Unified firmware available on standard OpenSprinklers also works for OSPi.

Note that we do not sell RPi directly — you need to purchase it separately (due to its popularity, it’s often out of stock). So OSPi is currently targeted towards users who have an RPi, and have prior experience with it.

OpenSprinkler, on the other hand, is based on an AVR microcontroller. It is pre-flashed with a full-featured firmware and works out of the box. It does not require any additional board or software setup. It has a built-in LCD display and push-buttons. We also provide a DIY version of OpenSprinkler, allowing you to build the controller from scratch. Another advantage of microcontroller is that it comes with analog pins. So if you are thinking of interfacing with external sensors, you may find it easier to use the microcontroller-based OpenSprinkler. In contrast, Raspberry Pi does not have built-in analog pins (although it’s possible to get ADC extension board to extend its capability).

If you are interested in modifying the programs yourself, OSPi would give a lot more flexibility. Since OSPi is based on RPi, you can use any of your favorite programming language, be it Python, PHP, Ruby, C++, Java, etc.; OpenSprinkler, on the other hand, is based on Arduino, or you can directly use avr-gcc to compile the program.

The other features are pretty much similar: both have a 24VAC to 5VDC conversion circuit, RTC and backup battery, Ethernet jack, zone expansion board connection, and both use the same OpenSprinkler enclosure. To enable WiFi, on OSPi you can use a WiFi USB dongle, on OpenSprinkler, you can use a portable WiFi adapter / repeater.

8 reviews for OpenSprinkler Pi (OSPi, AC powered)

  1. :

    This is an awesome kit! Everything is included. It is very well designed. I was able to get it working with Google calendar and Weather Underground. I have 8 zones and it works flawlessly. This is the best Pi project yet!

  2. :

    Our Raspberry Pi was already our DSL gateway router and alarm clock. Now it runs our sprinklers too, and it will soon feed the fish. It’s a clever, efficient design. I only wish I could find a 24V transformer as efficient as modern DC wall bricks. Since our Pi has other things to do I didn’t want to spend the memory on Ray’s Web interface. So I switch the Pi’s output pins with a simple shell script scheduled by the cron daemon. (Cron is to unix as Windows Task Scheduler is to MS-Windows. Very old and simple.) My shell script is on Ray’s wiki: http://rayshobby.net/mediawiki/index.php?title=OpenSprinkler_Pi/Shell

  3. :

    This was a great project and really fun way to get into Raspberry Pi’s. Was able to setup and configure the RPi before I received the opensprinkler unit. Then once it arrived I was ready to install the RPi and secure everything in the opensprinkler case. I modified the Hunter exterior case from my previous controller and the OSRPi and 24v transformer fit in with minimal modification. I live in Phoenix, AZ and I was worried about the heat in the sealed enclosure but it has been running solid since I installed it and the RPi peaks at around 80c during the hottest part of the day. I’m running v1.0.6 of the sprinklers_pi UI by Richard Zimmerman which has been running perfectly. It would be great if the opensprinkler or RPi had a 2-pin fan header so I wouldn’t have to hack something together to get some air moving. If you don’t live in Phoenix you shouldn’t have any heat issues. My next project is a halloween/christmas RPi light controller. Ray, make us a project!! Thanks.

  4. :

    Great kit with clear instructions and quality components. All worked perfectly. Only adjustment I made was to use wicd-curses for wifi as the default setup did not reconnect for me on router resets. Next plan is to improve garden sensors so that schedule can auto adjust more efficiently. Highly recommended.

  5. :

    I usually don’t take time to write reviews. I was so impressed by the product I felt the need to. The system was so fast and easy to setup. The ordering process was easy and came quick like amazon. If you are on the fence like I was just order it and save yourself the hassle of the other systems out there. The only thing I wished was an easy way to hook up an LCD. Not that it really needs one and would be mainly for show only.

  6. :

    At first I was very skeptical about buying an open source project. But the more I read the more I liked it. I read all the instruction and information. I got everything ready, I made the image on my SD card, I got a power supply. I received my OpenSprinkler Pi from UPS today, I came home and plugged it in, powered everything up and it’s all working just like it says. I’m very happy with it and I’ll recommend it to anyone that I can stop and talk to about it. My skill level is a little advanced, I’ve used GNU/Linux many years and the is my third Pi. But I believe the instruction are very clear and no steps were missing. I can not be more pleased with this purchase and the product. Good job all around. (although getting past the captcha to post this review was a pain in the butt)

  7. 5 out of 5

    (verified owner):

    I have been programming Raspberry pi for a variety of home automation and SDR projects for some time now but this one caught my eye, since i wanted to upgrade my old sprinkler controls with an advanced, WiFi/Cloud/App based module and had a spare Raspberry Pi B+ lying around. I was able to get it up an running within few minutes but it took me few hours to pull the old unit out of the wall and wire this awesome open source gizmo. Its been running for over a month now w/o any issues. I might figure out a way to add the LCD module and may be write few python scripts to send additional email/sms notifications.

  8. 5 out of 5

    (verified owner):

    This thing was awesome and worked out of the box! I got the Raspberry Pi at Fry’s and set up OpenSprinkler software on it. Once this hardware came in (and the expansion board), I plugged it all up and it all worked! Great product and fun to control my sprinklers from my phone. Saved money and has a much nicer interface than the old Hunter manual controller.

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Additional Information

Weight 0.6 lbs
Dimensions 6 x 4.5 x 1.5 in