OpenSprinkler OpenSprinkler v3 User manual

OpenSprinkler v3 Getting Started Guide
Thank you ordering OpenSprinkler. You have received hardware v3 with built-in WiFi, and OLED display. This
document is a brief introduction to how to get started using the device. For complete information, including video
tutorials, user manual, and API document, please visit https://www.opensprinkler.com
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Notes
●OpenSprinkler is NOT waterproof. For
outdoor use, please put the controller in a
waterproof enclosure.
●OpenSprinkler v3 has several differences
with the previous generation. Check the
image on the right for locations and labels
of connectors and terminals.
●AC-powered version has a orange terminal
for 24VAC; DC-powered LATCH  versions
have a black DC power plug.
●There are two sensor terminals: Sensor 1
(SN1) and Sensor 2 (SN2). At the moment
of this writing, the firmware only supports
one sensor, through SN1. Support for the
second sensor will be available in the
future. To connect a sensor, such as rain or flow sensor, insert the two wires to SN1 and GND. These sensors are
typically dry-contact switches so there is no polarity. Powered sensors (such as 5V flow sensor) can also be used: the
pin labeled VIN outputs +5V.
●The COM (common) wire terminal has two ports internally wires together. You can use either port (COM-COM).
●OpenSprinkler v3 uses a different type of zone expander connector from previous versions. When purchasing zone
expanders in the future, please make sure to purchase Expander version 3.0 which comes with the compatible cable.
●OpenSprinkler v3 also has built-in RF transmitter connector. This is for the RF station feature (which allow OpenSprinkler
to control RF wireless power sockets). When plugged in, the transmitter should face up (check user manual for details).
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Hardware Installation
Step 1: Label wires and remove your existing sprinkler controller.
●Carefully label and remove the wires from your existing controller. Typically you will see 24VAC power wires, COM
(common) wire, one or more Zone wires. You may also find a Master Zone (or Pump Start Relay) wire, and Rain Sensor
wires (if you have a rain sensor installed).
Step 2: Attach OpenSprinkler, and re-insert wires.
●For the convenience of installing wires: all terminal blocks on OpenSprinkler can be removed and re-inserted later.
●For 24VAC-powered version, insert the power supply wires to the orange terminal block. AC has no polarity.
For DC-powered or LATCH versions, plug in the DC power supply. Insert the other wires (COM and zone wires)
correspondingly. Note that COM (common) wire should go to the COM terminal, NOT GND!!!
●To connect a sensor, such as Rain Sensor, insert the two wires to SN1 and GND. Generally there is no polarity.
●If you have a Master Zone (or Pump Start Relay) wire, insert it to any zone port – OpenSprinkler uses software defined
Master Zone (up to 2 independent Master Zones), any of the available zones can be assigned as a Master Zone.
Step 3: Link OpenSprinkler Zone Expansion Boards (optional)
●Plug one end of the zone extension cable (comes with expanders) into OpenSprinkler's Zone Expander connector. The
connector is polarized so there is only one way to plug it in. Plug the other end to the Zone Expander.
●The Zone Expander has two connectors that are equivalent, so you can plug into either. To link additional Zone
Expanders, use another extension cable to link the unused connector on the first zone expander to either connector of
the second expander. OpenSprinkler v3 supports up to 4 expanders (each expander adds 16 zones).
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 Continue to the other side


●Because all Zone Expanders are hooked onto the same (I2C) bus, you must set for each Zone Expander a unique index
(1, 2, 3, or 4). Each Zone Expander has a DIP switch (shown on the right) that allows you to set the index. The first
expander (directly connected to main controller) should have an index of 1 (OFF OFF on the DIP switch), the second
expander should be 2 (ON OFF), the next is 3 (OFF ON), and the last is 4 (ON ON).

Setting Up WiFi
●The first time you power on OpenSprinkler (or every time after a factory reset), it will start in AP mode, creating an open
WiFi network with SSID displayed on the LCD screen (OS_ followed by the last 6 bytes of the hardware address). Use
your phone or laptop to connect to this WiFi network (Note: on Android phones, you may receive a warning: WiFi has no
Internet connection. Select Yes to stay connected, before proceeding to the next step).
●Open a browser and type in IP address 192.168.4.1. Follow the instructions to complete the WiFi setup process. In
particular, you need to select (or type in) your WiFi router's SSID and your WiFi router's password. Then click on
Connect.
●Once the device connects to your WiFi successfully, it will automatically restart and boot into Client mode. To access the
controller in client mode, simply click push-button B1 -- that will display the client IP address to LCD screen.
●On your phone or computer, open a browser and type in the client IP address, you will see the OpenSprinkler web
interface. The default device password is opendoor. You can also install OpenSprinkler mobile app (see below).

Factory Reset and Device Password
●To reset WiFi only (while preserving program settings): after controller is powered on, press B3 followed by B2 until the
screen displays 'Reset to AP mode?'. Then Click B3 to confirm.
●To perform a factory reset: first unplug the main power; then plug the power back, as soon as you see the OpenSprinkler
logo, press and hold push-button B1, and continue holding B1 until the LCD displays 'Reset?' Make sure the answer is
Yes, then press and hold push-button B3 until the controller reboots itself and completed the resetting process.
●Upon factory reset, the device password is reset back to the default, which is opendoor.

OpenSprinkler Firmware and Mobile App
OpenSprinkler’s built-in web interface works with both desktop and mobile browsers. You can access OpenSprinkler using
either a standard web browser, or the free OpenSprinkler mobile app. To install the mobile app, just search opensprinkler in
your app store. We support most mobile platforms. Firmware tutorial video is available at www.opensprinkler.com.
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After the controller is powered on and establishes the WiFi connection, you can find out its client IP address on the LCD by
clicking button B1. Also, the OpenSprinkler mobile app can automatically scan your local network to discover OpenSprinkler’s
IP address. For example, your OpenSprinkler’s IP address might be 192.168.1.22. Next, either use the mobile app, or open a
browser and type in the IP address (e.g. 192.168.1.22). You should then see the login screen. Some screenshots are shown
below. OpenSprinkler supports many advanced features. Check the user manual or the firmware tutorial videos for details.
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Thank you again for choosing OpenSprinkler! For support questions, community forum, or see our
other related products, please visit: https://www.opensprinkler.com