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
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 o5V.
●
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).
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).
Continue to the other side