![]() ![]() Software code and hardware design files available for download at Rayshobby GitHub.Spare analog / digital pins, serial, and I2C for interfacing with external sensors and actuators.Does NOT have built-in WiFi but can work with and power a portable WiFi adapter (see links below) for wireless connection.Does NOT include 24V AC sprinkler transformer or valves, which are available at or local home improvement stores. ![]() Package includes one assembled and tested OpenSprinkler, with product case and terminal blocks.For more zones (up to 48), buy OpenSprinkler Zone Expansion Board. Built-in ATmega644 mcu, LCD, USB programmer, microSD slot, DS1307 RTC with battery, 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 AC), 8A impulse / inrush.Maximum number of zones / stations: 48.Clear-cover project enclosure with wall-mount back panel.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. 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 32 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. For DIY kit, please check this link here. It works out of box and does not require any soldering. Note: this is the fully assembled kit that uses surface mount components. 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 / irrigation controller. ![]()
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