Tagged: External Sensor
June 25, 2018 at 12:22 am #3915rcc344Participant
If I had to use a wired rain sensor, I would isolate the long wires probably using an opto-isolator or a relay. A relay is easier, but less technical way. The rain sensor would activate the relay which in turn would control the sensor terminal with very short direct wires.Spread the love!June 25, 2018 at 12:13 pm #3924Randall FoslerParticipant
It may be easier for me to just spend $15 – $20 on a new Orbit wired sensor. I would hope theirs are compatible.Spread the love!June 26, 2018 at 1:38 am #3943
I thought about buying the Orbit sensor too – but after seeing the reviews compared to the Hunter Miniclick (which I had for 14 seasons and never had a problem) I decided to stay with what worked. Clearly Orbit has to do something about this timer. In any case I’m taking RCC344 suggestion’s and testing with the capacitor. My father-in-law was a former TV repairman (tubes) and has a bunch of capacitors. He gave me two of them. I just have to wait for rain and test the timer. Once it goes on/off, I’ll add the capacitor and see if that does the trick. I’ll let everyone know. Unfortunately there isn’t rain in the forecast until Thursday and it may not even be enough.Spread the love!June 26, 2018 at 10:44 pm #3991Tturner73Participant
I just added the rain sensor could I get the firmware update. 44:67:55:02:2f:99Spread the love!June 28, 2018 at 6:47 pm #4076
So it was just raining all day in NY and got a chance to test the capacitor. So before I added the capacitor, my new, wired Hunter MiniClick was registering on the BHyve, but I was getting the on/off issue many of us have been getting – so good – perfect time to test the capacitor! I added the capacitor one lead to one of the sensor terminals and the other lead to the other sensor terminal. The good news is that the BHyve no longer went on/off, however the bad news is that the timer ignored the rain sensor and started watering my lawn. I suspect that’s because the capacitor is acting like a bridge between the two sensor terminals and behaves as if it wasn’t raining.
Any thoughts?Spread the love!July 13, 2018 at 12:31 am #4634rcc344Participant
Sorry for the delay in responding….to be clear I have a rather long reply
The sensor terminals on the bHyve look for a continuity (short) across the terminals to indicate that watering should continue. When the short is removed (an open circuit) the bHyve will stop watering. This is the operation of just about any rain sensor. Many times the rain sensor is placed in series with the Common valve wire where an open would restrict the valve from working.
The issue I see on the sensor terminals of my bHyve is that when the rain sensor has no rain and shows a short the bHyve works correctly and allows watering. When there is water in the rain sensor the wires show an open circuit and seem to act as an antenna to induct noise into the bHyve circuit. This caused in my bHyve the on-off oscillation of watering.
My solution was to add a 0.1 uf ceramic disk capacitor across the sensor terminals at the bHyve. The terminals of the bHyve sensor show a small DC voltage. A capacitor is a device that acts as a short circuit with AC voltage (noise) and an open circuit with DC voltage. Placing the capacitor across the sensor terminals which are DC terminals will not show as a short and should not trigger a water situation.
Since you indicate that placing a capacitor across the sensor terminals caused the bHyve to water indicated a problem with the capacitor. The capacitor may be defective and shorted out; or the capacitor may be an incorrect value an is polarized such as an electrolytic. A too large capacitor will show a DC short while charging, while a polarized capacitor connected backward will show a short. The best way to test is to remove all connections from the sensor terminals except for the capacitor. The bHyve should NOT allow watering as the capacitor alone will not short the terminals.Spread the love!July 13, 2018 at 6:02 pm #4647
Thanks RCC344! Great advice and will try what you suggest. Appreciate your help!Spread the love!July 14, 2018 at 9:05 pm #4677SchoonerParticipant
The addition of a 0.1uF capacitor worked for me, but the wire distance between my Rainbird wireless receiver module and the bHyve is only 14″. Not sure how well this cap will work with wired sensors with longer wire. I used a Kemet capacitor, part number C320C104K1R5. Specs are available at Kemet.com (search the part number).Spread the love!July 15, 2018 at 12:04 am #4683mooch91Participant
I just installed the HRC 400, the 16-zone version of the B-hyve controller. I tried connecting my existing Hunter Mini-clik sensor to the two sensor spots on the terminal strip. I tried testing it (soaked it) and don’t think it’s working.
I get no indication that it’s “active”, and I believe I experienced the on-off response described in this thread (I had to “force” a new time for a program).
Is it safe to assume that Orbit/Hydro-rain do not have this figured out yet, and I should just disable the sensor at the moment? I don’t want the on-off hammering to occur next time a program is set to run.
Thanks.Spread the love!July 30, 2018 at 9:43 pm #5368TimBParticipant
So did anyone at Orbit EVER reply to anyone either in the forum or via other means about this issue with rain sensors? It appears that even an Orbit branded wired sensor would have this same problem would it not, with noise causing issues within Bhyve? Wonder why Orbit is being so silent on this….?Spread the love!July 31, 2018 at 10:15 pm #5475
No fix on the rain sensor yetSpread the love!July 31, 2018 at 10:52 pm #5478Josh WheelerKeymaster
There’s some talk over on this thread about this too:
In short, we’re working on it. There’s still a lot to improve on but it’s on the radar and some improvements should be coming soon.
Thanks!Spread the love!June 24, 2019 at 1:02 pm #77692
Any fix yet old Post but same problem still existsSpread the love!June 24, 2019 at 1:03 pm #77693
Same problem I am having stilll….Any fix yet old Post but same problem still existsSpread the love!July 9, 2019 at 5:26 pm #77770
- You must be logged in to reply to this topic.