OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Unable to load UI This topic has 16 replies, 5 voices, and was last updated 9 years, 6 months ago by Ray . Viewing 17 posts - 1 through 17 (of 17 total)According to information from Victoria Gardner, Weather Underground the gateway for obtaining keys on the new API for PWS non-commercial users is planned to open on February 15, 2019. All current WU API keys that are linked to a PWS will stay open through Friday, March 1, 2019. Links to documentation and details about data can be …One thing you can check is the wire resistance. Use an online calculator to compute the wire resistance, such as this one: keep in mind that you need to input the round-trip distance. Typical sprinkler valves draw about 200 to 300mA holding current, and if the voltage drops below 18V AC they are unlikely to stay on. Announcing OpenSprinkler Firmware 2.2.0(1) December 30, 2022 Announcing OpenGarage Firmware 1.2.0 October 7, 2022 Learning Electronics — I/O expander options October 10, 2021 Apr 9, 2024 · OSPy. Vlastnosti zařízení. ovládání zařízení přes webové rozhraní (telefon, tablet, webový prohlížeč) přes LAN nebo WiFi připojení. zabezpečení přístupu k rozhraní pomocí jména a hesla (možnost šifrovaného spojení přes https certifikát) možnost snadného zálohování (přenesení všech nastavení na jiný ... Forums for OpenThings. OpenSprinkler Unified Firmware. Announcements, questions, and suggestions about the OpenSprinkler Unified firmware. 831. 5,946. 1 day, 6 hours ago. Nicola. OpenSprinkler Mobile and Web App. Questions, comments, suggestions about OpenSprinkler mobile and web app. Forums for OpenThings. OpenSprinkler Unified Firmware. Announcements, questions, and suggestions about the OpenSprinkler Unified firmware. 831. 5,946. 1 day, 6 hours ago. Nicola. OpenSprinkler Mobile and Web App. Questions, comments, suggestions about OpenSprinkler mobile and web app. A quick note that our Black Friday / Cyber Monday sales are on now: all OpenSprinkler products are shown in discounted prices right now, and the deal only lasts till Monday Nov 28. This is the only time of the year that we offer discounted pricing, so if you are interested in buying OpenSprinkler, grasp this chance and don’t let it slip away ...OpenSprinkler owners can use this solution to send their PWS weather observations onto a local Weather Service server. For more information on the "WeeWX Solution" click here. 4 ) Solutions for specific PWS (provided by OpenSprinkler Forum members) Davis Vantage: a solution for this PWS has been kindly provided by @rmloeb hereMay 16, 2020 · OpenSprinkler › Forums › Hardware Questions › Recommended flow meter This topic has 5 replies, 4 voices, and was last updated 3 years, 3 months ago by Ray . Viewing 6 posts - 1 through 6 (of 6 total) Nov 29, 2013 · OpenSprinkler Pi. Watch on. If you hate watering the garden but enjoy messing around with computers, OpenSprinkler Pi is a no-brainer. It’s the cheapest and most configurable system of its type I’ve come across, it’s open source (and this means that Ray’s not the only person working on it – tools from the community like Rich Zimmerman ... OpenSprinkler would have to be mapped to an external IP with Duckdns or something similar. The external address and port would then be mapped to the skill along with the MD5 password. Because of the required mapping, this would never be a skill approvable by Amazon for publication.According to information from Victoria Gardner, Weather Underground the gateway for obtaining keys on the new API for PWS non-commercial users is planned to open on February 15, 2019. All current WU API keys that are linked to a PWS will stay open through Friday, March 1, 2019. Links to documentation and details about data can be …OpenSprinkler Station is for gaining advanced controls and status information over a single station (zone) of a device, e.g. to turn it on or off, or the time remaining. OpenSprinkler Device is for device-specific controls that usually apply to multiple stations or main unit sensors, e.g. if rain was detected.Jan 6, 2021 · Hello, I have created a HW/SW variant from OpenSprinkler based on the ESP32-WROOM module and including a Lora SX1262 module (long range). This variant allows a device to be configured as master (remote) or slave (station). Any action in the remote will be transmitted to the station over the MirrorLink lora protocol.May 21, 2017 at 3:48 pm #46359. Ray. Keymaster. Insert the two wires of the flow sensor to OpenSprinkler’s sensor port. Then in the OpenSprinkler web interface, go to Edit Options -> Weather and Sensors, and configure the sensor to be ‘Flow Sensor’. May 21, 2017 at 5:31 pm #46374.The marking may differ somehow depending on the manufacturer, but in general the marking is not the full part number because there is not enough space to put the entire part number. Many rectifier diodes are interchangeable. For example, D1 on OSPi is a standard rectifier with a minimum of 100V reverse voltage stand.If you have already installed opensprinkler firmware onto the Pi then you can select a station (click the associated cog). In the settings popup, click the Advanced tab and select “GPIO” as the station type. You can now select the gpio pin that you want to toggle when this station needs to water. Make sure you then wire up that gpio pin to ...The first thing to check is at the homepage, swipe left to right (or click the upper-left corner icon) to open the left-side menu, then ‘System Diagnostics’. Look at two time stamps: the Last Weather Call and Last Successful Weather Call. If the Last Successful Weather Call time stamp lags behind the first one, or is simply not available ...So in case you are looking for a 24V AC relay to work with OpenSprinkler in order to switch high-voltage devices, this is an inexpensive (. 2. Schrack RT314524: This is a very small 24V AC relay that you can buy from Mouser or Digikey. It has a contact rating of 16A @ 250VAC, which is also plenty for common applications.Announcing OpenSprinkler Firmware 2.2.0(1) December 30, 2022 Announcing OpenGarage Firmware 1.2.0 October 7, 2022 Learning Electronics — I/O expander options October 10, 2021OpenSprinkler Pi is an extension board for the Raspberry Pi. It makes use of the Raspi's GPIO pins to directly interface with sprinkler valves. It features a...Participant. If by “run 2 valves at the same time”, you mean run 2 stations/zones at the same time, then yes, you can. The stations that you want to run in parallel must have the sequential attribute set to off. You do not need a separate program, but you may have other considerations when you create programs that have a mix of …Both weather sources, Weather Underground and WeeWX provide acceptable weather data for the OpenSprinkler Weather Service. Hosting an own weather server isn’t always needed. At least for Netatmo Personal Weather Stations cloud services like Meteoware can be used to fill the missing link between Netatmo and Weather …Announcing OpenSprinkler Firmware 2.2.0(1) December 30, 2022 Announcing OpenGarage Firmware 1.2.0 October 7, 2022 Learning Electronics — I/O expander options October 10, 2021OpenSprinkler is an open-source Internet web-based sprinkler timer / controller built upon the Arduino platform. Features of the app include: * Easy to understand device status. * Quick program modification. * Launch ad-hoc or defined programs instantly. * Manual mode for convenient testing. * Multi-device support.The time is calculated using two pieces of information: the NTP time (which is UTC+0 time) and the time zone (this is obtained from the opensprinkler weather server, which calculates your time zone using your location). If you export your configurations to a .json file, and open the file, there is a variable called “tz”, which is the time zone.Jul 1, 2013 · However, OpenSprinkler Pi does not have any software limit on the number of zones. Regarding concurrent vs sequential running modes, currently the only option is to globally switch between the two (i.e. either all stations run sequentially, or all stations are allowed to run concurrently). There is currently no support for subsets of sequential ...You can turn off extender mode by typing in the IP address of your remote controller, go to Edit Options -> Advanced, and check of Extender mode. You can also do this on the controller physically by using buttons. April 7, 2021 at 2:56 am #69684. imboeschi. Participant.Sep 22, 2019 · Hi there, got your your OpenSprinkler 2 days ago and trying to get all setup done since then. Wifi setup working perfectly. Remote access is the one I struggle with. Went through your topics about port forwarding etc. On my Netgear router, I changed the following Static Leases MAC Address Hostname IP Address Client LeaseThe Android app does work if I point it directly at the OpenSprinkler controller. I’ve used tcpdump and wireshark to compare the traffic going to the controller when I try to connect the app to the controller, and the problem appears to be that the app is adding an additional “/” to the GET /js?… request when going through the proxy. ...Its simple, after speaking with DAB , the pump regulates pressure in the line as the solenoids are opened by open sprinkler controller than pushes water to the desired zone. Once the zone solenoid turns off the water pressure in the line signals the pump to turn off. There is a delay of 10 sec which is standard from the manufacture and can be ...OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Announcing OpenSprinkler Unified Firmware 2.1.9 (4) What's New Firmware 2.1.9 (4) is now available. The primary change in this firmware is the initial support for MQTT (thanks to the generous contributions by jbaudoux, PeteBa, and vsoltan). To use MQTT, this firmware requires …Once we have the code, we can use OpenSprinkler to simulate the code, thus be able to control remote devices. Heads-up: the following steps require a small amount of soldering. The estimate time for modification is 15 to 20 minutes. Step 1: Decode Remote Power Sockets. Take out the RFToy, plug in a 433MHz receiver (making sure the VCC and …Jun 12, 2020 · The weather algorithm is just an algorithm, it’s not human intelligence, it can’t read your mind. That’s why you are given parameters which you can tweak to fit your own specific need. You can’t expect it to work perfectly with the default settings. I think your expectation is too high.I will be updating the driver installation instructions for OpenSprinkler 2.1 and SquareWear right away, as they both use USBasp bootloader. Users have often complained that it’s frustrating to install USBasp driver for Windows 7 64-bit … · The opensprinkler then always comes up with an IP adderess of 198.162.0.100, however this does not appear in the list of connected devices on my modem, and if i put that IP into my computer or phone, it will not connect. Any ideas if this is a modem issue or setting with the Netgear modem, or something else? Thanks.There are a bunch of kinds…. -two wire reverse polarity to open or close. -three wire, common and + to one ot open, + to the other to close. -two wire spring return – + to open, 0 to close. (more expensive but failsafe) 24vac dpdt relay driven by open sprinkler output, with a dc supply to drive the valves could be wired to any of these types.Sep 22, 2019 · Hi there, got your your OpenSprinkler 2 days ago and trying to get all setup done since then. Wifi setup working perfectly. Remote access is the one I struggle with. Went through your topics about port forwarding etc. On my Netgear router, I changed the following Static Leases MAC Address Hostname IP Address Client LeaseAug 1, 2022 · It uses the most common type of fuse (5mmx20mm). Given the symptoms of both your OSPi and OpenSprinkler, you should definitely perform a solenoid resistance testing. You may have a shorted solenoid or shorted wiring somewhere. October 16, 2023 at 10:19 pm #77265. You must be logged in to reply to this topic. OpenSprinkler › Forums › OpenSprinkler Mobile and Web App › App displays Celsius, can't change it. I just noticed that my app is displaying metric measurements instead of imperial. I can't find any way to change it. My phone settings are imperial, and the controller and my phone are …Dec 30, 2015 · First, to reduce cost the Zero does not have the 2×20 pin headers pre-soldered, and it doesn’t have a standard size USB connector. This means in order to use it with OpenSprinkler Pi, you need to hand solder the pin headers; and in order to connect it to a USB WiFi dongle, you need a microUSB to USB adapter, which is commonly known as …I am seeing this in the homeassistant log constantly not sure what is up. My open-sprinkler device is connected via Ethernet cable, I never have connectivity issues while hitting OS web gui. 2022-08-26 06:21:22.143 INFO (MainThread) [cus...OpenSprinkler supports all common 24V AC solenoid valves, eg from Hunter, Rainbird or Gardena. Therefore you can easily upgrade your existing irrigation system …OpenSprinkler hat eine Leistungsaufnahme von ungefähr 2,2W = ca 0,1A. Ein Rain-Bild Magnetventil hat einen maximalen Strom von 0,3A. D.h bei 4 Magnetventilen GLEICHZEITIG haben Sie 4x 0,3A + 0,1A = 1,3 A Einschaltstrom, das nächstgrößere Netzteil mit 1,5A sollte genommen werden.Nov 29, 2012 · Participant. The combination of Raspberry Pi and OpenSprinkler seems to be working quite well. I posted the steps I used to get the pi and OpenSprinkler working together on my blog. At this point the Pi serves the JaveScript files and icons for the UI and handles logging of irrigation events. Rain gauge is currently not supported: at least not supported if you want to use it to stop watering when a certain amount of rain is received. Technically rain gauge works like a flow sensor — the reed switch internally turns on and off repeatedly to indicate the rate at which rain is accumulated. You can use rain gauge in the sense that you ...Mar 29, 2020 · Firmware tutorial video is available at www.opensprinkler.com . After the controller is powered on and establishes the WiFi connection, you can find out its client IP address on the LCD by clicking button B1. Also, the OpenSprinkler mobile app can automatically scan your local network to discover OpenSprinkler’s IP address.Sep 22, 2019 · Hi there, got your your OpenSprinkler 2 days ago and trying to get all setup done since then. Wifi setup working perfectly. Remote access is the one I struggle with. Went through your topics about port forwarding etc. On my Netgear router, I changed the following Static Leases MAC Address Hostname IP Address Client LeaseUse SSVNC on the client and TightVNC on the pi to access the pi’s desktop through the SSH tunnel. Run the interval program via Chromium web browser on the pi’s desktop. It took a little setup but it works smoothly. Maybe someday the ospi code will be secured. April 3, 2014 at 4:59 am #26340.The Android app does work if I point it directly at the OpenSprinkler controller. I’ve used tcpdump and wireshark to compare the traffic going to the controller when I try to connect the app to the controller, and the problem appears to be that the app is adding an additional “/” to the GET /js?… request when going through the proxy. ...One thing you can check is the wire resistance. Use an online calculator to compute the wire resistance, such as this one: keep in mind that you need to input the round-trip distance. Typical sprinkler valves draw about 200 to 300mA holding current, and if the voltage drops below 18V AC they are unlikely to stay on.Basic features of the OpenSprinkler include: - AVR Atmega328 MCU running at 8MHz, compatible with the open-source Arduino software. - Microchip ENC28J60 Ethernet …Regarding concurrent vs sequential running modes, currently the only option is to globally switch between the two (i.e. either all stations run sequentially, or all stations are allowed to run concurrently). There is currently no support for subsets of sequential groups. July 5, 2013 at 7:43 pm #24613. djMax.Hi, There is option to connect 2 sensors for OSPi: 1. Rain Sensor (Then when it rainy day, and the water is open, it will close automate) 2. Land Sensor (That in computer I see when the land is dry). Regards. June 17, 2014 at 3:06 pm #27223.September 29, 2022 at 11:14 am #74013. DWillys. Participant. I have a couple of the opensprinkler devices on my network. They’re set up to get their tcpip data via DHCP. In the interface I can’t find anywhere I can set the hostname so I can identify which device is which. I tried setting the hostname in the DHCP reservation (Option 12) but ...Once we have the code, we can use OpenSprinkler to simulate the code, thus be able to control remote devices. Heads-up: the following steps require a small amount of soldering. The estimate time for modification is 15 to 20 minutes. Step 1: Decode Remote Power Sockets. Take out the RFToy, plug in a 433MHz receiver (making sure the VCC and …September 29, 2022 at 11:14 am #74013. DWillys. Participant. I have a couple of the opensprinkler devices on my network. They’re set up to get their tcpip data via DHCP. In the interface I can’t find anywhere I can set the hostname so I can identify which device is which. I tried setting the hostname in the DHCP reservation (Option 12) but ...Because very few users take advantage of the relay, and it’s kind of expensive, we’ve made the decision to remove the relay from all OpenSprinkler hardware (including OS, OSPi, and OSBo). Also, due to a recent supply chain problem of ATmega644, it turns out that buying ATmega644 ends up costing more than ATmega1284, that’s why …This boosting time turns out to be around 80 to 100ms. Second, OSBee by default uses 100ms pulse in both directions (i.e. both opening and closing the valve). This is very easy to change to 250ms and 62ms respectively to match the Gardena controller. The last issue deserves more thinking, that is, opening the valve requires 9V, but closing the ...Basic features of the OpenSprinkler include: - AVR Atmega328 MCU running at 8MHz, compatible with the open-source Arduino software. - Microchip ENC28J60 Ethernet controller enables web-based scheduling, through either wired Ethernet connection, or WiFi connection if used with a WiFi repeater. - Allows up to 8 water stations/zones, individually ... So in case you are looking for a 24V AC relay to work with OpenSprinkler in order to switch high-voltage devices, this is an inexpensive (. 2. Schrack RT314524: This is a very small 24V AC relay that you can buy from Mouser or Digikey. It has a contact rating of 16A @ 250VAC, which is also plenty for common applications. The opensprinkler then always comes up with an IP adderess of 198.162.0.100, however this does not appear in the list of connected devices on my modem, and if i put that IP into my computer or phone, it will not connect. Any ideas if this is a modem issue or setting with the Netgear modem, or something else? Thanks. Forums for OpenThings. OpenSprinkler Unified Firmware. Announcements, questions, and suggestions about the OpenSprinkler Unified firmware. 831. 5,946. 1 day, 6 hours ago. Nicola. OpenSprinkler Mobile and Web App. Questions, comments, suggestions about OpenSprinkler mobile and web app. I am running a new OpenSprinkler (AC) and everything is working great except I cannot change the time zone. That dropdown option is disabled. I have tried enabling NTP and disabling but I still cannot change the timezone. I have set the location as west coast, but it forces timezone -5 which is east coast.Jan 6, 2021 · Hello, I have created a HW/SW variant from OpenSprinkler based on the ESP32-WROOM module and including a Lora SX1262 module (long range). This variant allows a device to be configured as master (remote) or slave (station). Any action in the remote will be transmitted to the station over the MirrorLink lora protocol.Having bought my OpenSprinkler I first tried to connect it via WiFi by buying the successor of the recommended WiFi Router, a TP-LINK TL-WR802N. As the controller is located under the surface about 20m away from our house it didn't get a connection. So I thought about PowerLine and bought an AVM FRITZ!Powerline 510E SetSo in case you are looking for a 24V AC relay to work with OpenSprinkler in order to switch high-voltage devices, this is an inexpensive (. 2. Schrack RT314524: This is a very small 24V AC relay that you can buy from Mouser or Digikey. It has a contact rating of 16A @ 250VAC, which is also plenty for common applications.Aug 1, 2022 · It uses the most common type of fuse (5mmx20mm). Given the symptoms of both your OSPi and OpenSprinkler, you should definitely perform a solenoid resistance testing. You may have a shorted solenoid or shorted wiring somewhere. October 16, 2023 at 10:19 pm #77265. OpenSprinkler is an open-source Internet web-based sprinkler timer / controller built upon the Arduino platform. Features of the app include: * Easy to understand device status. * Quick program modification. * Launch ad-hoc or defined programs instantly. * Manual mode for convenient testing. * Multi-device support.The extra GPIOs do help with enabling more sensors especially analog sensors. ESP8266 also has versions with external antenna plug (ESP-07S). We haven’t moved to use ESP32 mainly because it takes time to develop, test, and get familiar with a new microcontroller. With ESP8266 we are familiar with it, know the quirks.24VAC/500mA sprinkler transformer for OpenSprinkler AC and OpenSprinkler Pi. Please note that this plug is only for 110~120v U.S. outlets. Due to the low current rating (500mA), it is NOT suitable to run more than 2 valves at the same time (i.e. concurrent/simultaneous zones). If you need to run more zones at the same time, please find a 24VAC …Installieren Sie die App “OpenSprinkler” auf ihr Smartphone. Beim ersten start baut OpenSprinkler ein eigenes WLAN mit dem Namen “OS_xxxxxxx” auf. Verbinden Sie ihr Smartphone oder ihren PC mit diesem WLAN. Öffnen Sie ihren Webbrowser und geben Sie die Adresse 192.168.4.1 an. Folgen Sie dann den Anweisungen am Bildschirm.Jan 6, 2021 · Hello, I have created a HW/SW variant from OpenSprinkler based on the ESP32-WROOM module and including a Lora SX1262 module (long range). This variant allows a device to be configured as master (remote) or slave (station). Any action in the remote will be transmitted to the station over the MirrorLink lora protocol. Announcing OpenSprinkler Firmware 2.2.0(1) December 30, 2022 Announcing OpenGarage Firmware 1.2.0 October 7, 2022 Learning Electronics — I/O expander options October 10, 2021 Sale! ESPToy v2. $ 12.99 9.99. ESPToy is a WiFi development board for ESP8266. Version 2.0 has on-board Neopixel color LED, mini buzzer, button, light sensor, LiPo battery jack and charging chip. It has built-in CH340 USB-serial and auto-reset circuit. It’s pre-flashed with a demo software written in Arduino with ESP8266 core.Participant. I was able to interface an existing netafim flow sensor to the rain sensor input on the OS, and modify the main.cpp to display the flow rate when valves are turned on. It was amazingly stable (see attached picture GPM display.jpg). the 6.36GPM varied from about 6.32 to 6.40GPM (once the line fill event occurred, which could take 1 ...Jul 25, 2018 · Weather adjustment methods rely on online weather data, those are independent of your rain sensor, which is your local sensor that does NOT depend on online weather data. If you want to only use rain sensor, please select ‘Manual’ as adjustment method, and configure your sensor as Rain sensor and use that. August 8, 2018 at 12:25 …24VAC/500mA sprinkler transformer for OpenSprinkler AC and OpenSprinkler Pi. Please note that this plug is only for 110~120v U.S. outlets. Due to the low current rating (500mA), it is NOT suitable to run more than 2 valves at the same time (i.e. concurrent/simultaneous zones). If you need to run more zones at the same time, please find a 24VAC …
At 12 volts, that’s 417 ma (each). So well within the maximum OpenSprinkler spec of 800 ma per channel. But, I think the sum is too much for the 16 mil triac gnd trace on the OpenSprinkler pcb. Alternately, I could put 2:1 transformers on the OpenSprinkler channel outputs. That way I wouldn’t have to hack the OpenSprinkler pcb.. Stripes rewards
What I would like to do is build a wireless controller that can turn a latch valve, like an Orbit 58874N, on and off. Since my gardens are spread out and don’t have power nearby I’d like to use LoRa or some other low powered communication protocol and power everything from solar. My thought was I would run OpenSprinkler on a master …Honestly if LCD and buttons are important for you, you should probably consider the fully assembled OpenSprinkler 2.3. The unified firmware works for both hardware. July 31, 2016 at 6:57 pm #43599. 951calguy. Participant. has anyone had any updates on the i2c lcd screen and how to make it work with ospi?RFToy is an Arduino-compatible gadget for interfacing with radio frequency (RF) modules. It can be used as a standalone gadget, or in conjunction with OpenSprinkler (including DC / AC / Pi) to decode and simulate RF signals on RF remote power sockets. This allows OpenSprinkler to switch not only sprinkler valves, but general devices such as lights, …OpenSprinkler Pi is an extension board for the Raspberry Pi. It makes use of the Raspi's GPIO pins to directly interface with sprinkler valves. It features a...A mobile interface for the OpenSprinkler irrigation device. Designed to allow manual control, program management (preview, add, edit, and delete), initiation of a run-once program, viewing graphical and tabulated representations of log data, viewing device status, adjusting rain delay, and changing of OpenSprinkler settings.May 21, 2017 at 3:48 pm #46359. Ray. Keymaster. Insert the two wires of the flow sensor to OpenSprinkler’s sensor port. Then in the OpenSprinkler web interface, go to Edit Options -> Weather and Sensors, and configure the sensor to be ‘Flow Sensor’. May 21, 2017 at 5:31 pm #46374. Announcing OpenSprinkler Firmware 2.2.0(1) December 30, 2022 Announcing OpenGarage Firmware 1.2.0 October 7, 2022 Learning Electronics — I/O expander options October 10, 2021 OpenSprinkler Zone Expander. $ 49.00 – $ 50.00. OpenSprinkler Zone Expander provides an easy and inexpensive way to increase the number of stations for your OpenSprinkler. Each expander adds 16 zones. Please note that there is NO expander for OpenSprinkler Latch — the DC expander will NOT work with OpenSprinkler Latch.This way, when OpenSprinkler starts to run any program, or receives weather changes, it can send a web request to IFTTT, which further triggers a text message or push notification to your phone. Conversely, to use a Maker action, you can set IFTTT to send a web request to your gadget. This way, when it receives an associated trigger, it can ...Nov 11, 2017 · Thanks! November 30, 2017 at 10:39 pm #48410. Ray. Keymaster. Not yet. Have been working on integrating Jeff Lawrence’s improved OpenGarage firmware, which does integrate MQTT for OpenGarage, and the same feature can be integrated into OpenSprinkler. I’ve put it on todo list now. April 3, 2018 at 1:35 pm #49483. Meet your New Sprinkler System. OpenSprinkler will improve your lawn, garden, or farm irrigation. Create custom programs and use our automatic weather-driven algorithms. … OpenSprinkler is an open-source web-based sprinkler controller / irrigation timer built upon open-source hardware and software. It works with standard 24V AC sprinkler valves commonly found in household watering and irrigation systems. You may be planning to buy a conventional sprinkler timer, but chances are that these systems provide a ... .