Trying to control a smart fan using tinytuya

[generalzu1]

Please lmk if this is the right place to ask.

I am trying to control a smart fan (this one) using a raspberry pi. I am able to control the operating mode (on or off) of the fan. using

import tinytuya
from tinytuya import Contrib
import time

fan  = Contrib.ClimateDevice('dev_ID','IP_address','local_key',version = 3.3)
fan.turn_on()
time.sleep(3)
fan.turn_off()

This seems to work just fine. However, when we try to set the fan speed using fan.set_fan_speed('middle') but that doesn;t work for some reason.

I tried to use fan.get_fan_speed() but the data returns None. It should return 'low' because that's the first setting.

To localise the problem, I used fan.status_json()

It returns :

return status[self.DPS_FAN]
KeyError: '5'

The data that gets returned from the fan is:
{'dps' : {'1': True , '2', 'Cool', '3': 1}}

The function status_json() is included below:

    def status_json(self):
        """Wrapper around status() that replace DPS indices with human readable labels."""
        status = self.status()["dps"]
        return {
            "Power On": status[self.DPS_POWER],
            "Set temperature": status[self.DPS_SET_TEMP],
            "Current temperature": status[self.DPS_CUR_TEMP],
            "Fan speed": status[self.DPS_FAN],
            "Temperature unit": status[self.DPS_TEMP_UNIT],
            "Sleep preset On": status[self.DPS_SLEEP_PRESET],
            "Swing On": status[self.DPS_SWING],
            "Operating mode": status[self.DPS_STATE],
            "Timer left": status[self.DPS_TIMER],
        }

Does anyone know why it only returns the first three but not the rest?

[uzlonewolf]

I believe ClimateDevice is designed for an air conditioner, not a fan, so the DPs it expects are going to be different. I'd just use OutletDevice instead and pass in the values manually. If you open devices.json in a text editor, what does it have in the mapping section for this device?

[generalzu1]

The OutletDevice doesn't have any functions to control the fan speed tho. The only other place I found anything about fan is the ThermostatDevice but I don't think it's the right place.

Could you tell me how to open devices.json in a text editor?

[jasonacox]

Could you tell me how to open devices.json in a text editor?

What do you use to write your code? You should be able to use that to read the devices.json file that was created when you ran the Tuya Wizard. You could also do this and search for your smart fan details:

import json

# Open the JSON file
with open('devices.json', 'r') as f:
    # Load the JSON data
    data = json.load(f)

# Print the JSON data in a formatted way
print(json.dumps(data, indent=4))

Tuya devices use DPS values to control their behavior. DeviceOutlet can be used to read or write to them to change behavior.

[generalzu1]

I didn't have to run the wizard the first time I treid it. I just got the local key and device ID from the website through the API Explorer.

So it turns out that the free-trial I was on just expired. I can't get the wizard to work. It's going to take some time to configure that before I can get the wizard runningDo you have any alternatives to bypass that?

I already have the local key and the device ID from the fan.

[uzlonewolf]

It's going to require some trial and error, but you should be able to do it without running the wizard.

Create a monitor script using https://github.com/jasonacox/tinytuya/blob/master/examples/monitor.py and, with it running, change the speed and mode in the phone app. You should see updates in the monitor script when you do that. Once you have the values for the different speeds/modes you can put together a script to control it. Something along the lines of:

import tinytuya
import time

FAN_DP = 3       # CHANGE TO WHAT THE MONITOR SCRIPT SHOWS

FAN_SPEED_LOW = 1    # CHANGE TO WHAT THE MONITOR SCRIPT SHOWS
FAN_SPEED_MEDIUM = 2 # CHANGE TO WHAT THE MONITOR SCRIPT SHOWS
FAN_SPEED_HIGH = 3   # CHANGE TO WHAT THE MONITOR SCRIPT SHOWS


fan  = tinytuya.OutletDevice('dev_ID','IP_address','local_key',version = 3.3)
fan.turn_on()
time.sleep(3)
fan.set_value( FAN_DP, FAN_SPEED_MEDIUM )
time.sleep(3)
fan.turn_off()

[generalzu1]

Thanks for that. That makes a lot more sense. I will work on it and send an update soon.

[generalzu1]

So we were able to open a new acount, and we found this in the devices.json file:

{
        "name": "Window Fan (310)",
        "id": "ebde66bcd9c442fce1tgtk",
        "key": ">1/g3x|q0qJnrnLz",
        "mac": "d8:1f:12:19:f4:62",
        "uuid": "f3cff003a5cdd941",
        "sn": "10006121000C20",
        "category": "fs",
        "product_name": "Window Fan (310)",
        "product_id": "tqs2qloiq4hqiuso",
        "biz_type": 18,
        "model": "Comfort Zone Dual Window Fan",
        "sub": false,
        "icon": "https://images.tuyaus.com/smart/icon/bay1596489933724sjOD/35f62f21ab0910a27d31debe834a993e.png",
        "mapping": {
            "1": {
                "code": "switch",
                "type": "Boolean",
                "values": {}
            },
            "2": {
                "code": "mode",
                "type": "Enum",
                "values": {
                    "range": [
                        "Cool",
                        "Exhaust",
                        "Circulate"
                    ]
                }
            },
            "3": {
                "code": "fan_speed",
                "type": "Integer",
                "values": {
                    "unit": "",
                    "min": 1,
                    "max": 3,
                    "scale": 0,
                    "step": 1
                }
            }
        }
    }

I can see the code fan_speed, but I can't make sense of it. Could you guys explain if that means the fan_speed is being received correctly?

[generalzu1]

The monitor.py worked for us. Thanks a bunch!

[generalzu1]

I guiess we were just using the wrong python script the whole time.