![]() You may be planning to buy or have already purchased a commercial sprinkler. It can be used to schedule and work with standard 24VAC sprinkler valves commonly found in household watering and irrigation systems. More video demos showing how to use the controller to switch other devices (light bulbs, power switches etc.) can be found on my website. I am proud to introduce OpenSprinkler: an open-source, programmable, web-enabled sprinkler valve controller. You can follow the design to make your own PCB or simply buy a kit from: Video Demoīelow is a video demo of the project. This requires that the openhab. The design of the schematic, PCB, and parts list can be found on the project description page at: h ttp:// OpenSprinkler stations are numbered 0 through 7 for the default number of stations, but for some users of the OpenSprinkler and OpenSprinkler Pi, they will have extension boards in use. Most importantly, it comes as an open-source kit, so you can feel free to build it, program it, modify it, or hack it! This project requires some soldering tools and skills, but even if you have never soldered before, it should be pretty easy to get started. The power supply design works with both AC and DC power input. The triacs on board can also be used to switch other AC devices, or replaced with MOSFET/transistors to switch DC devices. OpenSprinkler is an open-source Internet web-based sprinkler timer / controller built upon the Arduino platform. Reserved PCB slot for the RFM12B wireless transceiver, useful for wireless RF communications with sensors, battery-operated valves (coming soon), and remote-control units in the future. The controller is compatible with most 24VAC household sprinkler valves. Powered directly from the 24VAC sprinkler transformer. Allows up to 8 water stations/zones, individually controlled (can be extended to 16 by adding a shift register). Microchip ENC28J60 Ethernet controller enables web-based scheduling, through either wired Ethernet connection, or WiFi connection if used with a WiFi repeater. The idea of OSPi first came when I noticed that many users were setting up RPi to work with OpenSprinkler. It is based on the design of OpenSprinkler, but its ‘brain’ is an RPi instead of an AVR microcontroller. AVR Atmega328 MCU running at 8MHz, compatible with the open-source Arduino software. OpenSprinkler Pi (OSPi) is an open-source sprinkler / irrigation extension board for Raspberry Pi (RPi). ![]() Basic features of the OpenSprinkler include: These limitations are the main motivation of this 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 capability. ![]() ![]() I am proud to introduce OpenSprinkler: an open-source, programmable, web. A relay is simple, either it's a short or not.I am proud to introduce OpenSprinkler: an open-source, programmable, web-enabled sprinkler valve controller. Introduction: OpenSprinkler: Open-source Web-enabled Sprinkler Valve Controller. I did it this way because I got tired of calculating how much current each device could handle and then heat sinking them. Just be sure to put a reverse biased diode across the relay coil to keep back EMF from causing problems. Whether you are at your desktop, laptop, tablet or phone whether you are at home. OpenSprinkler unchains you from your sprinkler or irrigation control box, enabling you to program, run, or stop zones at any time from anywhere. Keeping your lawn and flowers beautiful doesn't have to be stressful. Install the same controller on residential and light commercial sites. Automate and Access Sprinklers from Anywhere. If you want to be sure you're not overloading the Arduino, a 2N2222 transistor can be placed to buffer the current. Rain-Bird Controller Indoor Outdoor Lawn Irrigation Sprinkler Timer ESPME3 (+ WiFi + 1 Module) 304.97 With 4 to 22 stations, the ESP-ME3 provides the station count options customers need. There are several 5V relays that can hook directly to the pins on the Arduino and don't seem to cause any problems even after years of use. I also directly control a couple of small 110VAC motors with the little relays. The coil voltage on the big relays ranges from 24VAC in most cases to 110VAC for the big contactor. I usually put the small relay in a socket of some kind so it is easy to change, but haven't had to do that yet. I have a 20A contactor controlled by a tiny relay in one instance and several 10A relays in other projects controlled this way. I use a small relay hooked to a pin on the arduino, either through a transistor or direct to the pins, then control whatever I want with the small relay. I'm old school when it comes to controlling things like this.
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