Trying to add support for (Tuya) MHCOZY TYZGTH16A DS18B20 temperature sensor with relay

[WayneManion]

I bought a pretty unique Zigbee device I found on Amazon: https://www.amazon.com/dp/B0D4DV81TH

It is essentially a Zigbee chip and a DS18B20 probe thermometer. The plan is to attach the probe to my dryer vent pipe to be able to determine when the dryer is running and when it is finished. I already have a YoLink sensor unit attached to the dryer vent and this method works very well. The YoLink setup is great, but it uses batteries and this Zigbee unit is mains-powered. I prefer mains-powered sensors when possible. This would also free up the YoLink sensor for some other job.

I tried following the 'support a new Tuya device' instructions and was able to make some headway. I asked around on the Discord and was advised to try using the "modernExtends" format for device support.

So far I have:

const tz = require('zigbee-herdsman-converters/converters/toZigbee');
const exposes = require('zigbee-herdsman-converters/lib/exposes');
const reporting = require('zigbee-herdsman-converters/lib/reporting');
const modernExtend = require('zigbee-herdsman-converters/lib/modernExtend');
const e = exposes.presets;
const ea = exposes.access;
const tuya = require('zigbee-herdsman-converters/lib/tuya');

const definition = {
    fingerprint: [
    {
      modelID: 'TS000F',
            manufacturerName: '_TZ3218_7fiyo3kv',
        },
    ],
    model: 'TYZGTH16A', 
    vendor: 'MHCOZY', 
    description: 'Temperature sensor controller with DS18B20 waterproof probe', 
    onEvent: tuya.onEventSetTime, // Add this if you are getting no converter for 'commandMcuSyncTime'
     extend: [ tuya.modernExtend.tuyaMagicPacket(),
               tuya.modernExtend.tuyaOnOff(),
               tuya.modernExtend.dpTemperature({dp: 0x66, scale: 10}) ]
};

module.exports = definition;

I can see a reasonable-looking temperature value in the exposes tab of the Z2M web UI. I can also see a switch. When I press the button on the device the state of the switch in the web UI changes.

When I try to change the state of the switch or change the value of the power-on behavior setting I get an error like this:
Publish 'set' 'state' to 'Dryer vent' failed: 'Error: ZCL command 0xa4c1382c30531e81/0 genOnOff.off({}, {"timeout":10000,"disableResponse":false,"disableRecovery":false,"disableDefaultResponse":false,"direction":0,"srcEndpoint":null,"reservedBits":0,"manufacturerCode":null,"transactionSequenceNumber":null,"writeUndiv":false}) failed (Timeout - 14011 - 0 - 227 - 6 - 11 after 10000ms)'

I don't really want to buy a Tuya Zigbee hub to snoop for the other parameters. I believe the device probably has some way to control the relay based on temperature probe input, but I don't see anything like that in the Z2M logs.

[WayneManion]

I bought a Tuya Zigbee hub and ran the steps in "Find the data points" instructions.

{
    "1": "Switch 1",
    "7": "Timer 1",
    "14": "Restart Status",
    "19": "Delay-off Schedule",
    "101": "Work Mode",
    "102": "Temp Current",
    "103": "Humidity Value",
    "104": "Maxhum Set",
    "105": "Minihum Set",
    "106": "Upper Temp",
    "107": "Lower Temp",
    "108": "Temp Correction",
    "109": "Humidity Calibration",
    "110": "Fault State",
    "111": "Child Lock",
    "112": "Hum Sensitivity",
    "113": "Temp Sensitivity",
    "114": "Alarm",
    "115": "sensor_dect",
    "116": "CF",
    "119": "switch_auto_1",
    "121": "温度告警",
    "122": "湿度告警",
    "123": "告警开关"
}

Google says:
121 tranlates to "temperature alarm"
122 translates to "humidity alarm"
123 translates to "alarm switch" #

[WayneManion]

From the Tuya debug logs:

Switch 1: Off and On
Work mode: auto and Manual
Temp current: values in degrees C
Timer 1: I couldn't get any values to appear here
Humidity value: no humidity sensor, no values
Maxhum set: no humidity sensor, no values
Minihum set: no humidity sensor, no values
Upper temp: I couldn't get any values to appear here, even when I set the device to auto
Lower temp: I couldn't get any values to appear here, even when I set the device to auto
Temp correction: values in degrees C
Humidity calibration: -1% (I set this value in the app. My device has no humidity sensing capabilities)
Restart status: Power-off and Restart Memory
Fault state: I couldn't get any values to appear here
Child lock: ON or OFF
Hum sensitivity: no humdiity sensor, but I could set values in the app and see them online
Temp sensitivity: values like 0.50* C as set in the app (the app offered options 0.1-1.0)
Delay-off schedule: AQA8 when I set the delay in the app to one minute, AQB4 when set to two minutes, AQB7 when set to 2:03, AQ27 when set to 58 minutes, AA2Y when disabled
sensor_dect: 'none' when I unplugged the sensor from the main box, tpm when I plugged it back in while the main box was plugged into mains
CF: I couldn't get any values to appear here, even when I changed the reporting units from C to F in the app
Alarm: I couldn't get any values to appear here

switch_auto_1: (control mode could only be set to temperature in the app)
examples:
Temp >30C turn on, <25C turn off: 80002C0100000101FA00000000
Turn >31C turn on, <25C turn off: 8000360100000101FA00000000
Turn >30C turn on, <24C turn off: 80002C0100000101F000000000

Temp >30C turn off, <25C turn on: 80002C0100000001FA00000001
Turn >31C turn off, <25C turn on: 8000360100000101FA00000001
Turn >30C turn off, <24C turn on: 80002C0100000101F000000001

[gianlucaf81]

I'm following carefully, my TYZGTH16A (Vine program) is also arriving, I'm really curious to understand how to add an unsupported device.

[gianlucaf81]

hi, trying to add custom .js from interface I receive this error: Request 'zigbee2mqtt/bridge/request/options' failed with error: 'external_converters must be array'

• solution -

The JS file must be inside the /opt/zigbee2mqtt/data/ folder (where the zigbee2mqtt configuration.yaml file is located). The following code should be added to the configuration.yaml file

external_converters:
  - TS000F.js

[gianlucaf81]

uh... here we go

[gianlucaf81]

Hi, how did you add it?

i used this guide on yt watch?v=WV-S4jTBVMc but i use z2m in lxc version on proxmox so as i wrote above the folder where to put the js file is not the one in the video

[emylive]

Thank you very much! it's seems like you

[gianlucaf81]

Are you used WayneManion configuration at the beginning of the discussion?

[WayneManion]

Are you used WayneManion configuration at the beginning of the discussion?

I can tell that emylive is not using my partially-working config because mine does not have battery or humidity. The module plugs in to mains power. The sensor with mine is a DS18B20 and measures temperature only.

[emylive]

Here is my device https://fr.aliexpress.com/item/1005007040718331.html?spm=a2g0o.order_detail.order_detail_item.3.2e4f7d56vmMOTH&gatewayAdapt=glo2fra#nav-specification
Now it works with your configuration thanks a lot!

const exposes = require('zigbee-herdsman-converters/lib/exposes');
const reporting = require('zigbee-herdsman-converters/lib/reporting');
const modernExtend = require('zigbee-herdsman-converters/lib/modernExtend');
const e = exposes.presets;
const ea = exposes.access;
const tuya = require('zigbee-herdsman-converters/lib/tuya');

const definition = {
    fingerprint: [
    {
      modelID: 'TS000F',
            manufacturerName: '_TZ3218_ya5d6wth',
        },
    ],
    model: 'TS000F', 
    vendor: '_TZ3218_ya5d6wth', 
    description: 'Temperature sensor controller with DS18B20 waterproof probe', 
    onEvent: tuya.onEventSetTime, // Add this if you are getting no converter for 'commandMcuSyncTime'
     extend: [ tuya.modernExtend.tuyaMagicPacket(),
               tuya.modernExtend.tuyaOnOff(),
               tuya.modernExtend.dpTemperature({dp: 0x66, scale: 10}) ]
};


module.exports = definition;