How to Configure BK7231N/CB3S Tuya Sprycle WiFi Water Timer Bought from AliExpress

Name: How to Configure BK7231N/CB3S Tuya Sprycle WiFi Water Timer Bought from AliExpress
Uploaded: 2024-03-07T07:45:48+01:00
Description: Purchased from AliExpress:

Question

Purchased from AliExpress:

p.kaczmarek2 · Accepted Answer

You can very easily configure device to open and close the relay after given time. Check out our autoexec samples:
https://github.com/openshwprojects/OpenBK7231T_App/blob/main/docs/autoexecExamples.md
For example, the following code may be altered to suit your needs:


// This aliased command will turn off relay on CH1 after 10 seconds
// addRepeatingEvent	[IntervalSeconds][RepeatsOr-1][CommandToRun]
alias turn_off_after_time addRepeatingEvent 10 1 setChannel 1 0
// this will run the turn off command every time that CH1 becomes 1
addChangeHandler Channel1 == 1 turn_off_after_time

You can also check the clock events:


// setup NTP driver
startDriver ntp
// set your time zone
ntp_timeZoneOfs 10:00

// create command aliases for later usage
alias day_lights backlog led_temperature 200; led_dimmer 100; echo lights_day
alias night_lights backlog led_temperature 500; led_dimmer 50; echo lights_night

// at given hour, change lights state
addClockEvent 06:01 0xff 1 day_lights 
addClockEvent 20:01 0xff 1 night_lights 

// wait for NTP sync
waitFor NTPState 1
// after NTP is synced, just after reboot, adjust light states correctly
if $hour>=06&&$hour<21 then day_lights
if $hour>=21||$hour<06  then night_lights

How to create autoexec.bat:

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.

p.kaczmarek2 · Answer

There is no Tuya JSON data in the attached binary file. It seems that you need to investigate the PCB to find out the GPIO roles. Have you tried using GPIO doctor?

andrewmarkcongdon · Answer

Yes, I need to investigate further, thanks.Unlike a couple of other outdoor things I was looking at today, this one wasn't potted, so I can make some progress later.

p.kaczmarek2 · Answer

This may require some script to turn off relay after 2 or 3 seconds but it's easily doable with OBK

andrewmarkcongdon · Answer

P9 ButtonP14 Motor Open ValveP24 LEDP26 Motor Close ValveYes 2 - 3 seconds for the motor to complete its cycle sounds about right.

p.kaczmarek2 · Answer

Can you attach it as full JSON template from the OBK Web App?

p.kaczmarek2 · Answer

Thank you! Code: JSONLog in, to see the code Do you need any futher help with configuring the device?

andrewmarkcongdon · Answer

For now manually turning on/off the device is working.I'm hoping to get to an automated script? Next step is the 2-3 second toggle. So OBK is where I should be looking next?The goal is to add a Zigbee moisture sensor in the future.

andrewmarkcongdon · Answer

I changed the pin definitions slightly:

  "pins": {
    "9": "Btn;3",
    "14": "Rel;0",
    "24": "LED;2",
    "26": "Rel;1"
  },

So I could toggle the LED state to reflect the valve state.
Similarly the button could be scripted to toggle valve state.

// Channel 0 - Water Off
// Channel 1 - Water On
// Channel 2 - LED

alias turn_off_led backlog setChannel 2 0
alias turn_on_led backlog setChannel 2 1

// This will automatically turn off relays after about 2 seconds
// NOTE: addRepeatingEvent [RepeatTime] [RepeatCount]
alias stop_flow backlog turn_off_led; addRepeatingEvent 2 1 setChannel 0 0
alias start_flow backlog turn_on_led; addRepeatingEvent 2 1 setChannel 1 0

addChangeHandler Channel0 != 0 stop_flow
addChangeHandler Channel1 != 0 start_flow

I can change the state of channel 1 and 0 using mqtt so remote script control works too.
I also added PowerSave in startup.

p.kaczmarek2 · Answer

Good job on scripting that. I may add that script to our autoexec.bat examples. Is this a final version, or is there anything more I can help you with?

andrewmarkcongdon · Answer

Couldn't find a suitable OpenBeken compatible moisture sensor so went with this

and a ZBDongle-E. Works OK, posts results to MQTT allowing simple closed loop scripting, but the battery life looks like only a week.

piotrszulc1 · Answer

FYI there's a new version of this device - based on cbu (was cb3s), firmware reported by Tuya App is 1.0.0.
The firmware is patched so cannot be cloudcut.
The device looks almost identical on the outside, except that the led is now red (was blue). Can be opened and flashed over serial as the previous version.
The pinout has changed though, now it is as follows:

P17 - button, inverted
P26 - red LED
P7/P6: on/off relays, to be used with bridge driver

How to Configure BK7231N/CB3S Tuya Sprycle WiFi Water Timer Bought from AliExpress

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