There is option to connect rain sensor ?

1. rain sensor is already supported.
2. land sensor: i’ve never seen a land sensor, but it’s certainly possible to add support for it. first you need to figure out if the land sensor is a digital (i.e. on or off) or analog sensor (i.e. continuous level of voltage output). if digital, it works just like a rain sensor, and you can use any of the spare GPIO pins to interface with the sensor. if analog, you can use one of the analog (ADC) pins on OSPi to talk to the sensor. The hardware connection should be pretty easy once you decide which pin you want to use. then you also need to modify the source code to add support. if it’s a digital sensor, you can pretty much copy what’s already there for the rain sensor.

Search ‘rain sensor’ on Amazon and you will see plenty of options. The one I am using is this:
http://www.amazon.com/Orbit-57069-Sprinkler-System-Freeze/dp/B000A7SPPU

Land sensor and flow sensor are not supported in the firmware. You will need to modify the source code to add support. For flow sensor, search the forum and you will find a few threads where people have discussed how to add it.

@ChaoscripT wrote:

Another 2 questions please:
1. To connect the RPi, I need also to connect MicroUSB or the 24V transporter is enough ?
2. Can I use Heatsticks with the OpenSprinkler Board? (or it will not fit?)

Regards.

1. The 24V transformer is all you need. The OSPi board provides power to the Pi via the GPIO pins.
2. Heatsinks should fit the Raspberry Pi sits on top of the OSPi.

Like from other place in world (for example)?

Yup, you can set up port forwarding on your router.

You should check the latest user manual:
http://rayshobby.net/docs/ospi14_manual.pdf
page 6, ‘Rain Sensor’ section. Rain sensor port has been added since OSPi 1.3. The video is outdated and I should re-make it at some point.

In the picture below, the rain sensor input can be seen. It is the green two wire connector on the right of the device. On the far left are two connectors for the common return wire and the 8 way connector in the center is the 8 zone output block. On the left side of the case you will see the orange power input connector and out of view on the rught side is an 8 pin expansion connector.

The rain sensor may be either normally open or normally closed and this setting is changeable via the software.

On the latest version v1.4 the opening panel in the center of the case is blocked off but is still visible. It severs no purpose on the OSPi.

You could be right for version 1.2. I only have version 1.4 and I used a pic from Ray’s site of an OSPi 1.4 device to show the only case where I knew the rain sensor input to be. For v1,4 I am certain as that is where I connected my rain sensor and, it is working. I believe version 1.4 to be the currently sold version so whoever buys an OSPi board today should get what is in my picture.

@ray,

Yes you did say it. earlier in this thread, I think. That was why I showed a picture of a v1.4 device. Since you shipped me a v1.4 it is the only version I have ever seen.

Aha ok I understand, then I need invenst in a new ospi board..:(

Hi
I also have OpenSprinkler v 1.2 and want to add a rain sensor. I imagine I can can add a 10k pullup resistor and a 10k current limiting resistor connected to a free IO on the gpio should work if I then advise OSprinkler which pin to use. Is this correct and if so where are OSprinkler port listing?

Thanks Mick

Hi all,
Please help this guy:( Remember the adage “Never trust a programmer with a soldering iron”.
As instructed I made rain sensor link with 12k pull up resistor and 5.5k current limiting resistor and connected it to 5v and GPIO14. I connected a NC rain sensor from Amazon. When I set weather sensor to “Rain” and “Normally closed” Open Sprinkler oscillates between “Rain detected” and “System idle” in approximately 10 second intervals.
For the rain sensor open circuit is 3.5V and connected is 0 volts at the sensor terminals.

I am using Open Sprinkler V1.2.1.8 (2), App 1.8.6, Hardware version OSPI
Raspberry Pi Revision 0002 – Model B Rev 1, Linux, raspbian V9 stretch

Can you tell me what I’ve done wrong please?
Do I need to upgrade OSPI?

tia Mick from Darwin in the NT which is a desert with a wet season.