Shelly-homekit: Roller Shutter: positioning accuracy

[heili1094]

Hy, the Software for Homekit is WOW!!!
I face one issue which is only cosmetic 😊
Possible to change the percentage which displays in HomeKit App? F.i. 37% roller shutter position is in real 15% so possible to off set manual?

Thanks
BR René

[rojer]

yeah, this one may not be as easy to tackle as simply add an offset. while working on #5 i deliberately put off positioning accuracy because of the differences. for example, it's been mentioned that some shutters have non-linear dependency between the amount of movement time and position.
so let's start gathering data. for your shutters, can you measure actual position in 10% increments? as in - set position to 10% in homekit, measure actual position, set to 20%, measure, etc up to 90%.
also, don't do it sequenctially 10-12-30-... (becasue error will accumulate), do 0-10-0-20-0-30-..., up to 90 (0 being fully closed position).

[heili1094]

Hy,

stupid question- how should i measure? With measure tape?
Thanks

Sent from 

Am 17.10.2020 um 21:27 schrieb Deomid Ryabkov [e-mail]:


yeah, this one may not be as easy to tackle as simply add an offset. while working on #5 i deliberately put off positioning accuracy because of the differences. for example, it's been mentioned that some shutters have non-linear dependency between the amount of movement time and position.
so let's start gathering data. for your shutters, can you measure actual position in 10% increments? as in - set position to 10% in homekit, measure actual position, set to 20%, measure, etc up to 90%.
also, don't do it sequenctially 10-12-30-... (becasue error will accumulate), do 0-10-0-20-0-30-..., up to 90 (0 being fully closed position).

—
You are receiving this because you authored the thread.
Reply to this email directly, view it on GitHub, or unsubscribe.

[rojer]

pretty much, yeah.

[heili1094]

https://www.icloud.com/iclouddrive/0I7PrVtKQHjyausFshEOycgpg

Hy, enclosed the link and hope it helps to find a solution

Br René

Sent from 

Am 18.10.2020 um 12:52 schrieb Deomid Ryabkov [e-mail]:


pretty much, yeah.

—
You are receiving this because you authored the thread.
Reply to this email directly, view it on GitHub, or unsubscribe.

[rojer]

thank you!
so, it looks like about 1/4 of movement from closed actually goes to open gaps between the slats.
when the curtain starts moving, from 30% on, we have the following values for number of cm per 10%:
13, 13, 14, 17, 19, 22. this non-linearity towards the end is a bit puzzling.
and the end position is not that far off from the 90% - it's around 80% by my quick calculation.

come to think of it, non-linearity is expected - there's less curtain to lift, so more of the energy goes to movement rather than counteracting gravity, so it goes faster per unit time.

[heili1094]

Hy, so and Solution for this „cosmetic“ issue?
Thanks

Am 18.10.2020 um 22:18 schrieb Deomid Ryabkov [e-mail]:


thank you!
so, it looks like about 1/4 of movement from closed actually goes to open gaps between the slats.
when the curtain starts moving, from 30% on, we have the following values for number of cm per 10%:
13, 13, 14, 17, 19, 22. this non-linearity towards the end is a bit puzzling.
and the end position is not that far off from the 90% - it's around 80% by my quick calculation.

—
You are receiving this because you authored the thread.
Reply to this email directly, view it on GitHub, or unsubscribe.

[rojer]

i'll need some more data from users to decide what to do.

[heili1094]

Ok Thanks

Am 19.10.2020 um 09:46 schrieb Deomid Ryabkov [e-mail]:


i'll need some more data from users to decide what to do.

—
You are receiving this because you authored the thread.
Reply to this email directly, view it on GitHub, or unsubscribe.

[juansf99]

Hello,
For a few weeks I have installed the firmware on a door blind. The operation of the blind is completely correct.
The installed firmware version is 2.3.0
The measurements have been made following the pattern: 0%-10%-0-20-0-30-0-40 ...

% | cm
10% | 4.5
20% | 18
30% | 32
40% | 50
50% | 69
60% | 89
70% | 111
80% | 135
90% | 162
100% | 194

As discussed above, a non-linearity is observed in the path of the blind. At the beginning it goes up a little and at the end of the route it goes up very fast.
I hope that this data can be of help to be able to add some parameter in the web interface and correct this behavior.

Thanks,
JASF

[rojer]

@juansf99 thank you!
what i'm thinking here is maybe we'll be able to offer a number of curves for the user to choose, linear being the default and then various options. let's collect some data to know which options to offer.

i added a note tot he wiki page to send new users here if they are not satisfied with the positioning.

[ken-sa]

hi rojer,

thank you for your great work.
i have the same problem.

Her the mesaurment from my roller.

10% | almost close
20% |
30% | 6
40% | 26
50% | 46.5
60% | 71
70% | 97
80% | 122.5
90% | 158
100% | 216

tomorrow i will give you a feedback from the second one.

[domke24]

Hi Rojer,

at first: the HomeKit Firmware is amazing! Thanks for that!

I have the same problem. I use a shelly for one of my windows. The problem is that when it´s fully closed the home app thinks it is nearly 25% opened. So in the home app the roller shutter are always open and never closed.

I would be perfect if you can find a solution.

Thanks in advance!

[ken-sa]

I tried it today with the stock firmware and it worked. After that I loaded the HomeKit firmware and calibrated it again. In the attachment you can find the log, maybe it can help.
shelly_calibration.txt

And here is the result, after the calibration.

[chstoll]

I really don't know if there is an issue here. I have roller shutter modules from fibaro (z-wave) and some really old marmitek X10 and they all calibrate in a similar way (just like the shellys with rojers homekit firmware). What do you expect 50% should be? In fact, the picture above seems exactly 50%, because the motor has to run quite a bit to get from closed (with open slots) to fully closed. So, knowing that just take 60% to get the shutter to an "optical" 50%.

[ken-sa]

If I want to reach the optical 50% I have to open the shutters to 74%, but that is not the point. We want to improve the firmware that works very well and bring it to another level. This is not a criticism from my side but rather a suggestion to get better. Please do not misunderstand.

[rojer]

50% in home app should mean exactly half open, half closed. meanwhile, let's continue collecting data.

[yuvalbeck]

Shutter.pdf
Hi Rojer, I had some time I put tapes every few cm on the window and filmed it - attached the numbers.
Not 100% accurate but maybe could help.

[thatslolo]

I spotted a problem on my blinds that there on different positions when set to the same, depending from which state they started to move to the desired position. It's obviously the same problem. I'll try to document it asap.

[andyblac]

sounds to me we need 3 positions for calibration FULLY OPEN, CLOSED, and MOTOR REST.

OPEN = shade at open position
CLOSED = shade at visible closed position
MOTOR REST = let the shade motor go to fully closed posotion, so all slats compress into the fully closed position.

@rojer would this be posible ?, maybe we need a new Roller Shutter option called Roller Slats.

[thatslolo]

I don't think that can be represented in HomeKit tbh.
But it could be used to determine the actual position of the shutter when set to a specific open state in percentage.

[andyblac]

why not, 1% could be CLOSE, and 0% could be REST. so if 10% is called for you actually get 10% etc. if in REST and you call 1% the shade open to CLOSED position.

i doubt hardly anyone will acually have a real world use for 1%, and even if they did the differance between 1% and 2% would hardly anything to complain about.

[thatslolo]

And why not make it configurable as an advanced option, so you can set the lower 10% for just changing the state of slats e.g. Just an idea. :)

[andyblac]

And why not make it configurable as an advanced option, so you can set the lower 10% for just changing the state of slats e.g. Just an idea. :)

thats why i suggested in a aditional 'Roller Slats" option, "Roller Shutter" would stay as is, for normal material shades.

[pivale]

why not, 1% could be CLOSE, and 0% could be REST. so if 10% is called for you actually get 10% etc. if in REST and you call 1% the shade open to CLOSED position.

i doubt hardly anyone will acually have a real world use for 1%, and even if they did the differance between 1% and 2% would hardly anything to complain about.

I actually use a lot the "only slats" open in my shutters :)
In the summer to prevent the house from overheating but still have some light...
Or to have some light in the rooms when my kids have their afternoon naps...

I like the idea of 0-10% being for slats and the rest for normal opening.

To configure this correctly, I would suggest that before calibration, the user sets the shutters to only slats open and start from there. That could give you an educated guess of what should be the slats time (i suspect really fast).

[andyblac]

why not, 1% could be CLOSE, and 0% could be REST. so if 10% is called for you actually get 10% etc. if in REST and you call 1% the shade open to CLOSED position.
i doubt hardly anyone will acually have a real world use for 1%, and even if they did the differance between 1% and 2% would hardly anything to complain about.

I actually use a lot the "only slats" open in my shutters :)
In the summer to prevent the house from overheating but still have some light...
Or to have some light in the rooms when my kids have their afternoon naps...

I like the idea of 0-10% being for slats and the rest for normal opening.

To configure this correctly, I would suggest that before calibration, the user sets the shutters to only slats open and start from there. That could give you an educated guess of what should be the slats time (i suspect really fast).

what i was saying is do you do a REAL 1% open, (forget about open slats), i was saying that we could have 1% as "open slats", and 2% as a REAL 1%, so in home kit when you ask for 1% it just opens slats.

i can't see how you could have 10% to open slats and also have a REAL 50% open????

[pivale]

i can't see how you could have 10% to open slats and also have a REAL 50% open????

You can if you have a non linear counting of the percentage.
You could have something like:
0-all closed
10-slats fully open/shutter down to the ground
50-shutter half open
100-shutter fully open

Still, I would be happy with something like 10% for slats, even if that meant that "real half open" would be 45%... I can deal with a 5% error 😉

[andyblac]

i can't see how you could have 10% to open slats and also have a REAL 50% open????

You can if you have a non linear counting of the percentage.
You could have something like:
0-all closed
10-slats fully open/shutter down to the ground
50-shutter half open
100-shutter fully open

Still, I would be happy with something like 10% for slats, even if that meant that "real half open" would be 45%... I can deal with a 5% error 😉

thats my point i very much doubt HomeKit slider willl support none linear percentage. thats why sugested 1% as "open slats"

so in calibration you would have 3 postions 100% = open, 1% = Open Slats, 0% = Fully closed.

[pivale]

Hey,

Here is my data, I have a "small" window and a "big" window.
Although I set it to round numbers, in the end home app reported a different percentage. The values here are the ones reported by home app after stopping.

Small
at 6% the shutter is touching the ground but slats are all open
0-9% - 2cm
0-21% - 12cm
0-30% - 21cm
0-40% - 32cm,
0-50% - 44cm
0-59% - 55cm
0-69% - 69cm
0-79% - 84cm
0-89% - 101cm
0-100% - 120cm

Big
at 8% the shutter is touching the ground but slats are all open
0-9% - 1cm
0-19% - 15cm
0-29% - 31cm
0-39% - 49,5cm,
0-50% - 68cm
0-59% - 90cm
0-69% - 113,5cm
0-79% - 139,5cm
0-89% - 167cm
0-100% - 210cm

[DarkAppleLead]

Hey rojer, first of all thank you for your great project!

I have a problem with one of my shutters. It says my window is fully open, but it isn‘t 😅

[CyberMrProper]

Hi @rojer, here are my numbers:

10% - 0 cm : all time is spent opening the slats, no visual window is opened
20% - 13 cm
30% - 28 cm
40% - 46 cm
50% - 65 cm
60% - 87 cm
70% - 109 cm
80% - 135 cm
90% - 159 cm
100% - 192 cm

Thanks!

[funkosgr1410]

Hello Rojer,

Many thanks for this software which is really awesome.
With regards to calibration, I use a shelly 2.5 which controls multiple shutters (it has been installed on a shutter central switch that controls all shutters).
This means that calibration is not applicable as each window has its own position for the same time that switch is open.
As such calibration now fails and there is no alternative to set manually a timer (e.g. 26 seconds) for open close time.
This is not related to this specific software as calibration was also failing with original shelly software.
How likely could it be to develop an override option that could use open/close based on a predefined time interval?

For the record, calibrating shelly 2.5 devices that are individually installed on each shutter works perfectly and thanks again for your excellent development.

Thanks!

[greensouth]

For this issue, please take a look at the approach made by Jose, the author of HAA firmware about how to set a modifier for Window Covering:
https://github.com/RavenSystem/esp-homekit-devices/wiki/Window-Covering

HomeKit Position = motorPosition / (1 + ((100 - motorPosition) * correctionValue * 0.0002))

In there, you set a correction value and see if it visually matches with the slider position. It's just a question of trying some values until you fine-tune the visual aspect.

[Lausbuab1]

Hi Rojer,

as also mentioned above, your work is awesome! Thank you for that.

Sadly, I also have the same issue with my shutter and shelly 2.5, that the shutter is about 50% closed and the app says, it's 80 percent closed.

Is it possible to add a manual calibration? Like entering the percent if the we can control it by ourselves?