OPENSPRINKLER SCHEMATICS UPDATE
OPENSPRINKLER SCHEMATICS MANUAL

Package includes partially assembled PCB, through-hole components, and product enclosure.

For more zones (up to 48), buy OpenSprinkler Zone Expansion Board.

Built-in ATmega644 mcu, LCD, USB programmer, DS1307 RTC with battery, microSD slot, mini-relay, and rain sensor terminal.

Maximum current supply from USB port (+5V line): 450 mA (to power external USB devices).

Maximum output current per zone / station: 800mA continuous 8A impulse / inrush.

Maximum number of zones / stations: 48.

Injection molded enclosure with wall-mount back panel.

OPENSPRINKLER SCHEMATICS UPDATE

Firmware update is programmed through USB.

Built-in USB programmer, push buttons, 16x2 LCD display, RTC timer, backup battery, screw terminals, and Ethernet connector.Program settings and schedule data are stored in EEPROM and preserved during power loss. Single power supply design using standard 24VAC sprinkler transformer.The source code is completely open and free.

OPENSPRINKLER SCHEMATICS MANUAL

A rich set of software features, including interval-based programming, graphical preview of program settings, manual override, http port change, DHCP or static ip, custom station names, station delay, per-station control of master valve, master on/off delay, water level, and support for external rain sensor.

Extension boards are available to extend the control up to a total of 48 stations.

Each controller board controls 8 stations, and each station can be individually programmed.

Allows either wired Ethernet connection, or WiFi connection by using an external WiFi adapter (not included). You can program and monitor sprinkler stations via a standard HTTP web interface or our cross-platform and free mobile app. For fully assembled product, please refer to this link here.

Note: this is a semi-assembled DIY kit v2.2u that requires some soldering and assembly steps. These limitations are the main motivations for this open-source project. You may be planning to buy or have already purchased a commercial sprinkler timer / controller, but chances are that these systems provide a limited set of fixed functionality, and have no web scheduling and monitoring capability. It works with standard 24VAC sprinkler valves commonly found in household watering and irrigation systems. OpenSprinkler is an open-source, web-based sprinkler timer / controller.

Opensprinkler schematics