Fan - Setting RotationSpeed

[CameronSmith93]

Device type

Stirling FS1-40DCWIFI Pedestal Fan

Device information

{   u'header': {   u'code': u'SUCCESS', u'payloadVersion': 1},
    u'payload': {   u'devices': [   {   u'data': {   u'online': True,
                                                     u'speed': u'3',
                                                     u'speed_level': 15,
                                                     u'state': u'false'},
                                        u'dev_type': u'fan',
                                        u'ha_type': u'fan',
                                        u'icon': u'https://images.tuyaeu.com/smart/icon/bay1589359175993MeEh/159540337782efe7f8e63.jpg',
                                        u'id': u'<redacted>',
                                        u'name': u'FS1-40DCWIFI'}],
                    u'scenes': []}}

Issue

Toggling on/off the fan via HomeKit works correctly. However, when setting any rotation speed, the fan shows a speed of '00' on the physical display and stops rotating.

Setting the rotation speed via the TuyaSmart app works correctly.

Let me know what else I can provide to assist in diagnosing the issue.

[milo526]

Hey! Thank you for opening an issue.

In your logs you should be able to find some log lines that look something like the following

[device_name] Characteristic.RotationSpeed [SET] xxxx xxxx

Could you please provide me with your log after you set the rotation speed, then I can see what values are being transmitted and see what goes wrong there.

[CameronSmith93]

Thanks for looking into this! Here are some values I've triggered just now:

[11/6/2020, 10:25:13] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.RotationSpeed - [SET] 24 4
[11/6/2020, 10:25:13] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.Active - [SET] 1 1
[11/6/2020, 10:25:15] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.RotationSpeed - [SET] 30 5
[11/6/2020, 10:25:15] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.Active - [SET] 1 1
[11/6/2020, 10:25:17] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.Active - [SET] 1 1
[11/6/2020, 10:25:17] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.RotationSpeed - [SET] 36 6
[11/6/2020, 10:25:20] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.Active - [SET] 1 1
[11/6/2020, 10:25:20] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.RotationSpeed - [SET] 24 4
[11/6/2020, 10:25:21] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.Active - [SET] 1 1
[11/6/2020, 10:25:21] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.RotationSpeed - [SET] 18 3
[11/6/2020, 10:25:28] [TuyaWebPlatform] [FS1-40DCWIFI] Characteristic.Active - [SET] 0 0

Edit: Just for clarification, it's a 15-speed fan.

[milo526]

I have no clue what the problem is here. It seems like the plugin is sending very reasonable values, I've tried it with my fan and that one works fine.

[CameronSmith93]

Yes, very strange indeed.

Is there anything that I can provide you with to assist with a diagnosis? Packet or request/response capture of working traffic from the Tuya app?

[milo526]

I cannot reproduce this issue and at the moment do not have the time to debug this with you sadly.

I would love for somebody to be able to submit a PR for this.

[patrickl96]

I've got a very similar problem. I've also submitted an issue for this.

[BobbyLindsey]

I have a similar issue with my fan. For my fan, it looks like maybe the speeds are not set by percentage, but simply enumerated. My fan has three speeds. When I set it to the medium speed in the Smart Life app, I see this in the HomeBridge logs:

[05/03/2021, 00:03:28] [TuyaWebPlatform] [Ceiling Fan] Characteristic.Active - [GET] true
[05/03/2021, 00:03:28] [TuyaWebPlatform] [Ceiling Fan] Characteristic.RotationSpeed - [GET] 2

[BobbyLindsey]

Also, on startup, it seems to indicate the number of speeds; three in my case:

[05/03/2021, 00:11:16] [TuyaWebPlatform] [Ceiling Fan] deviceConfig: {
  data: { online: true, state: 'false', speed_level: 3, speed: '2' },
  name: 'Ceiling Fan',
  icon: 'https://images.tuyaus.com/smart/icon/ay1566306500214Y6P2j/15856618854f216b2db9c.png',
  id: 'removed',
  dev_type: 'fan',
  ha_type: 'fan'
}

[milo526]

I guess there is a rounding error somewhere. I'm strongly contemplating moving away from percentage based device control and instead move back to level based control thus only allowing you to select steps 0 (off), 1, 2, ... up til the max your device supports.

[CameronSmith93]

I'm inclined to agree with the suggestion of it being a rounding error - incrementing the speed on my 15-speed fan increases the percentage display by 6%, for a max speed displayed of 90% rather than 100%.

Looking forward to level based control if/when you have the time to make the change!

[pcm1ke]

Any word on if/when this change to fan levels, rather than percentages may occur?

Thank you

[milo526]

No updates at the moment.