Opensprinkler

Firmware 1.8 Video Tutorial

• For instructions, refer to the OpenSprinkler Online User Manual.
• For complete information, visit: http://www.opensprinkler.com​
• This is microcontroller-based OpenSprinkler. If you are interested in RPi-based OpenSprinkler, please check OpenSprinkler Pi.

• Input voltage: 22∼28V AC.
• Power consumption: 1∼1.5W.
• Maximum number of zones: 48.
• Maximum current supply from USB port (+5V line): 450 mA (to power external USB devices).
• Built-in ATmega644 mcu, USB programmer, microSD card slot, DS1307 RTC, backup battery, and rain sensor terminal.
• Controls 8 zones (stations). For more zones (up to 48), buy OpenSprinkler Zone Expansion Board.
• Package includes one assembled and tested OpenSprinkler, with product case and terminal blocks.
• Does NOT include sprinkler transformer or valves, which are available at Amazon.com or local home improvement stores.
• Does NOT have built-in WiFi but can work with and power a portable WiFi adapter (see links below) for wireless connection.
• Spare analog / digital pins, serial, and I2C for interfacing with external sensors and actuators.
• Check related Accessories and Sensors.
• Software code and hardware design files available for download at Rayshobby GitHub.

• DHT11 or DHT22 temperature sensor
• USB female A to male B converter
• RF 433MHz transmitter / receiver pair, and RF 315MHz transmitter / receiver pair
• PL2303 USB-to-Serial cable

• OpenSprinkler Homepage
• Orbit 24V sprinkler transformer
• Sprinkler valves
• TP-Link nano-size WiFi router
• User Forum
• User Wiki