![]() ![]() The 5 seconds can be a variable, maybe 10 seconds but can be defined from the web interface. Zone one needs to turn on 5 seconds late and turn off 5 seconds early. Zones 2-10 need to use the booster on zone 1. Zones 2-10 are lawn, zones 11-14 are micro irrigation, and zones 15-16 are low voltage lighting. The other issue with this, when a valve is going to turn off, I would like the master/booster to turn off 5 seconds before this happens so the valve can close with less pressure to avoid water hammering. The second issue is that I would like to have a 5 second delay for the master to turn on, this will allow my valves to open with out the extra pressure that causes water hammering. ![]() The problem is that when I use the micro irrigation, I can not use the booster or master switch. My set up is that if I am switching a lawn sprinkler I will need to turn on my booster pump, I see that I can have this set as master and will turn on when each valve is switched. These will control lawn sprinklers and micro irrigation sprinklers. I have re-landscaped my property and am in the need for approximately 12-16 zones. I am considering buying your sprinkler product. Unless noted otherwise, content on this site is published under the Creative Commons Attribution-ShareAlike 3.0 License. The OpenSprinkler logo is courtesy of Nathan Johnson.The hardware design referenced this article: Building Intelligent, Web-based Control Systems, published by Milligan and Coffin in 1998.The USBtiny ISP programmer is courtesy of this blog post by Tequals0.The ATmega328 bootloader uses Optiboot.The scheduling webpage design is based on Tuxgraphics PoolTimer software.The structure of the website and build instructions are inspired by Ladyada’s website.The Ethernet code is based on JeeLabs EtherCard library.The code is written using open-source Arduino software, and uses its LiquidCrystal, EEPROM, and Time libraries.Please refer to the included README for how to use this program. It’s currently not in the form of an Arduino library. This demo program includes a manual operation mode and web scheduling mode. Previous release on Oct 24, 2011: OpenSprinkler Demo Program Please follow the Firmware Upgrade instructions for uploading a new program to the OpenSprinkler. Parts List can be found in the following spreadsheet: ![]() Hardware and Software updates are now all released on GitHub: Content on this site is published under the Creative Commons Attribution-ShareAlike 3.0 license.
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