SKU 114990048
OpenSprinkler is an open-source, Internet-based sprinkler / irrigation timer
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OpenSprinkler is an open-source, Internet-based sprinkler / irrigation timer. This is the official version 2.0s, featuring ATmega644 mcu pre-flashed with firmware 2.0.0. This product is fully assembled (with SMT components) and tested.
Mobile Web App Tutorial



Firmware 1.8 Video Tutorial



  • 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.
Check related Accessories and Sensors
  • 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
You can find these accessories at http://shop.rayshobby.net
Software code and hardware design files available for download at Rayshobby GitHub.
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Questions and Answers
Does the "Ink"Color Bag have silver tone hardware? (Chain)? It is hard to tell in photo
on Aug 5, 2014
Reply upvote (30)
I bought the black one and the chain is gold color. Not sure of the ink bag.
on Aug 5, 2014
Reply upvote (30)
You need a WiFi Internet connection, and a smartphone or tablet for the Echo App. That's it. It is easy to set up, but it may take you a while to figure out all of the little things that the Echo App can do.
on Aug 5, 2014
Reply upvote (30)
BEWARE this is NOT STEREO and it is NOT MONO. This is only one channel. You will not hear part's of songs (recorded in stereo) that are only played through the left channel. Kinda ridiculous. Still it is a decent sounding speaker.
on Aug 5, 2014
Reply upvote (30)
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★★★★★ Great bag
Purchased this for my 23 year old daughter in the butterscotch color. Great versatile color. She loves the size -- perfect for day or going out at night. Chain can be double to shorten for nighttime and left long to wear as a crossbody during the day.
September 2, 2013 by
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