OpenSprinkler Bee (OSBee) is an open-source, WiFi-enabled sprinkler controller for latching solenoids. It is suitable for garden and lawn watering, flower and plant irrigation, hydroponics, and other types of watering projects. It comes with built-in WiFi, OLED display, 3D-printed enclosure, and can switch up to 3 zones independently. It is designed for latching solenoid valves.
For larger number of zones, check out OpenSprinkler 3.0, which has the same WiFi and OLED display as OSBee, but supports expandable zones (up to 72), three power/solenoid choices, and the standard OpenSprinkler firmware and app,
- A single ESP8266 chip serves as the microcontroller and handles WiFi connectivity.
- On-board 128×64 OLED display, real-time clock with backup battery, USB-serial chip. Can switch up to 3 zones independently.
- Boost converter and a new H-bridge design that allows the same controller to switch both latching and non-latching solenoid valves, all powered from a single 5V USB port.
- Comes with 3D printed enclosure and screws.
- It has a built-in web interface that allows you to easily change settings, perform manual control, and create automatic sprinkler programs. It also provides logging and program preview features.
- It introduces Program Tasks to allow maximal flexibility in programming zones. For example, you can define arbitrary ordering of zones, have multiple zones run at the same time, and insert delays between tasks. Zone water time is programmed at precision of seconds.
- It allows remote control through the Blynk app and Blynk cloud server.
- Firmware update can be performed either wirelessly using the web interface (OTA), or through the on-board USB port with a USB cable.
- One assembled and tested OSBee WiFi circuit board
- 3D Printed Enclosure
- USB cable
- (Optional Purchase) USB power adapter
Screen Shots of the UI and App:
- Input voltage: USB (5VDC).
- Number of zones: 3
- Built-in components: ESP8266, boost converter, RTC with backup battery, USB-Serial, OLED display, solenoid drivers.
- Power consumption: 1W
Resources and Links:
Gavin Bath (verified owner) –
Exactly what I was looking for to control my 24V DC latching solenoid valves for my lawn irrigation system. I was trying to do this myself with a cap on a breadboard but this little device does a WAY nicer job of it. Just hooked it up and tested it and it works perfectly! Thanks for saving me a bunch of time and headaches!
Does all the stuff it says it would so far, though yet to get it going with Blynk as I’m not familiar with this piece which looks promising as use of app over web interface is preferred. International shipping to Australia arrived promptly and installed with minimal effort though watching video. Using in non-latch format, the soldering was simple even for a novice. Happy so far but now want to explore getting more from it, app and Alexa hopefully.
I was really waiting for a low power, battery based solution like the prototype you presented here http://rayshobby.net/preview-of-opensprinkler-bee-osbee-first-prototype/ . Latching selenoid are mostly usefull in these situation where power consumption is an issue. Any plan to develop a battery solution?
Claire (verified owner) –
Had have this in use for a good few months now, works an absolute treat. Its great to be able to control my garden watering whilst I’m away, I’m on holiday for 3 weeks in August and now don’t have to rely on neighbours to water my garden!
woody seiders (verified owner) –
Absolutely perfect. Ray is great I had some minor issues in the beginning but my system is perfect now, it’s just perfect. I can’t express that enough. Schedules, options and flexibility to make the system yours. I built my own with SmartThings Shield and some third party board. Which was fine but it left one of my sprinklers on for 8 hrs. 🙁 No problem like this here. These boards are great. Thanks guys.