Sonoff - Zigbee Rain Sensor

[antonh.dutoit]

It would be brilliant for Sonoff to release a zigbee rains sensor to be used along with the zigbee SWV Sonoff Water Valve, currently using an altered zigbee rain sensor SNZB-05P - on the Ewelink app , it would be great to add a weather forecast into a set Trigger - so if rain is predicted etc.

[ward]

@SONOFF-Staff

[antonh.dutoit]

So I used a standard SNZB-05P connected with its cable directly to a Rain Drop Module - connected to Ewelink - and automated it to disable my scenes controlling my SWV and it works 100% - the rain drop module stands at an angle - @SONOFF-Staff @eWeLink

[ward]

Lovely work! I would add some hot glue on the screws for water resistance.

[zdy_78]

Can you send a wiring diagram or a photo of this project?

[antonh.dutoit]

Its very simple , SNZB-05P Water Leak Sensor connected with a WLDC200 Water Leak Sensor Cable - cut the end of the cable off - solder to the Rain Drop Module - preferable one with pins so that you can solder the cable inside the housing and keep the water leak sensor cable form getting wet - put in a water tight housing - angle it so that drops run of the front of the module and setup in Ewelink

[antonh.dutoit]

The screws and spacers of the rain drop module are sealed with glue and the screws of the box does not penetrate the housing + the lid has a rubber seal

[zdy_78]

Thanks.
Does the Rain Drop Module require additional power?

[antonh.dutoit]

not required

[zdy_78]

Maybe it is possible to solder the wires from the RainDrop module directly to the SNZB-05P without the WLDC200?

[antonh.dutoit]

it should be possible , I just went with the cable - it was the least invasive way of doing some tests - I believe the connectors on the SNZB-05P are gold plated to make sure it does not rust - so take that into consideration

[morgan]

@antonh.dutoit

Its very simple , SNZB-05P Water Leak Sensor connected with a WLDC200 Water Leak Sensor Cable - cut the end of the cable off - solder to the Rain Drop Module - preferable one with pins so that you can solder the cable inside the housing and keep the water leak sensor cable form getting wet - put in a water tight housing - angle it so that drops run of the front of the module and setup in Ewelink

The idea is most definitely ok. Although personally I would rather not destroy the cable permanently, but make a USB end, but that’s a detail.

However, generally using 05P is rather a slightly more expensive option compared to the regular DW2.

I use both DW2RF and DW2WIFI, where I desoldered the contact and soldered the cable terminated for my needs with a water level sensor. But the principle of operation is the same, provided that the water/humidity sensor is a reed relay type with an open/closed state.

Of course, it doesn’t look so nice in ewelink when it writes “door” next to the sensor and no zigbee.

DIY Single-level single-function water sensor

A simple floating magnet and contactor($3.14) module connected via a two-wire 0.5mm cable to Sonoff DW2-RF (open version only). [w2] In DW2-RF, the contactor is desoldered… soldered wires, each wire in a separate thermoplastic sleeve with glue, the whole in an additional thermoplastic sleeve with glue. In DW2-RF, a hole is cut for the cable. [w1] The whole thing works on the principle that when the water level drops below a certain point, the sensor is opened and the DW2-RF sends a signal…

[spoustaml]

Modul

Hello, you can try this module

[antonh.dutoit]

Also a good idea , went purely for the SNZB-05P Leak Sensor - because of the water animation in the eWelink app + how it looks inside eWelink Web - only down side is the action comes through as leaking/Leak detected etc. - but its ok -

(upload://7PDcYwYkvUL8JCGDuEROr8E4gcF.jpeg)

[morgan]

@antonh.dutoit

Also a good idea , went purely for the SNZB-05P Leak Sensor - because of the water animation in the eWelink app + how it looks inside eWelink Web - only down side is the action comes through as leaking/Leak detected etc. - but its ok -

Sometimes looks are very important hi hi
You can always tell yourself that the sky is leaking.

I also have 05P + WLDC200 but I use it with its original purpose as a sensor in the bathroom.

[tiagodagama]

It would be so cool if Sonoff developed a rain sensor.

[jonniugr]

I used this sensor in a pair with a zgb door opening sensor to detect overheating of a solid fuel boiler. The boiler has a safety group, an air valve. When the temperature is too high, and therefore the pressure in the heating system is increased, then water splashes out through the air valve. I placed this sensor in such a way that water splashes would hit it.