K-Rain Wi-Fi Irrigation Controller configration for local tuya

Configuration
1

Hello everyone,

I’m sharing my experience with K-Rain Indoor Wi-Fi Irrigation Controller (KRX6) 6 station (tuya) which is available at bunnings how I got it working with local tuya after the recent update.

https://www.bunnings.com.au/k-rain-wi-fi-irrigation-controller_p0409790
https://www.bunnings.com.au/k-rain-indoor-wi-fi-irrigation-controller_p0409791

This should apply to 8 channels as well, and its should be similar to Holman wx8

I assume if you are here then you know how to get your device local key, the device will be detected by local tuya and the DP IDs are the following:

Name in the APP | DP code | Type

Switch: 1 → Switch
NOT USED: 10 → weather delay
NOT USED: 11 → cont name

Zone 1: 101 → boolean (binary switch) only 6 in-app (probably 8 if you have the 8 channels)
Zone 2: 102
…
Zone 16: 116

Start A: 117 → these are the schedules/programs, they are called starts
Start B: 118
Start C: 119
Start D: 120 → not in the app (mine shows 3 only)
Allow enabled to start water: 121 → boolean (this is used to turn off all starts above)
Start A Enabled: 122 → boolean (the start indicator)
…
Start D Enabled: 125

Watering delay: 126 → integer (probably the number of days which you can set as a delay in the app)
Starts: 127 → row
Zones: 128 → row
DateTime: 129 → row

Battery status: 130 → boolean (report only)
Power status: 131 → boolean (report only)
Watering: 132 → boolean (report only)
Manual command: 133 → row
Tech info: 134 → row
Starts Initilized: 135 → boolean
Use watering delay: 136 → boolean
Sensor: 137 → boolean

I have added the zones and the indicators, ignored all the row elements
I got these values using the tuya API explorer

Its working perfectly, I have used it with the unlimited irrigation integration

image

2 Likes
2

Fantastic. Thanks. I got one of these just before Christmas, they seem unbeatable for the price, and was about to start trying to work this all out for myself. You’ve saved me a big job. Thanks for sharing.

3

My pleasure :blush:

4

Is it possible to give some more information on how this all works?

Like what is “DP ID”?

What is it you are referring to there?

5

Hey @et3rnal I don’t suppose you kept the output from API explorer? I’ve flashed one of these with ESPHome and now I can’t figure out the format of the manual command (DP 133), and I reckon that API output (e.g. "dp_id":133, "value":"xxx") would be a starting point.

6

Actually don’t stress - I figured this is all too complicated and I’m just gonna return it and go with one of these instead.

7

BTW can’t reply to this thread and leave this hanging :smiley:

Components like this have Tuya MCU units inside them. You can interact with the MCU using ESPHome as I’m doing, or by using LocalTuya or one of a few other integrations that interact via the Wifi chip’s default firmware. Everything’s done in terms of datapoints (DPs) with a numeric ID. Here’s what ESPHome reports for this device:

[22:30:57][C][tuya:041]: Tuya:
[22:30:57][C][tuya:056]:   Datapoint 131: switch (value: ON)
[22:30:57][C][tuya:056]:   Datapoint 130: switch (value: OFF)
[22:30:57][C][tuya:056]:   Datapoint 132: switch (value: OFF)
[22:30:57][C][tuya:056]:   Datapoint 136: switch (value: OFF)
[22:30:57][C][tuya:056]:   Datapoint 137: switch (value: OFF)
[22:30:57][C][tuya:056]:   Datapoint 105: switch (value: OFF)
[22:30:57][C][tuya:056]:   Datapoint 106: switch (value: OFF)
[22:30:57][C][tuya:056]:   Datapoint 117: switch (value: OFF)
[22:30:57][C][tuya:056]:   Datapoint 118: switch (value: OFF)
[22:30:57][C][tuya:054]:   Datapoint 134: raw (value: 00.00.00.00.00.00.00.00.00.00.00.74.00.00.00.00.00.00.02.17.00.00.00.00.00.00.00.00.00.00.13.01.01.00.00.29.02.00 (38))
[22:30:57][C][tuya:056]:   Datapoint 101: switch (value: OFF)
[22:30:57][C][tuya:056]:   Datapoint 102: switch (value: OFF)
[22:30:57][C][tuya:056]:   Datapoint 103: switch (value: OFF)

As I’ve kinda discovered while it’s usually self explanatory for something like aircon or an electric blanket, sometimes you’re on your own finding what these datapoints represent and how to use them.

8

Are there any Bluetooth valves that work?