Multi Point Calibration For The iSpindel - "Easy Method" - DIY Digital Home Brew Hydrometer [4K]
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- Опубліковано 28 лип 2024
- This video shows how to calibrate the iSpindel to create a polynomial formula that will ensure super accurate gravity readings in your home brew fermenter. This video shows the easy method using a sugar wash solution and additional dilutions, and in future videos I will show the "fast ferment" method which increases accuracy even further.
Once you have calibrated the iSpindel, you are ready to connect it to the services that you are wanting to use for it such as Brewfather, Ubidots, Fermentrack or BrewPi / BrewPiLess. I have videos coming out on connecting the iSpindel to these services so subscribe to check them out!
FULLY ASSEMBLED ISPINDEL KITS:
Fully Assembled + Tested iSpindel (Includes Battery)
www.ebay.com.au/itm/iSpindel-...
VIDEO TIMESTAMPS:
00:00 Introduction
01:49 - Tools and equipment you will need
02:49 - Making the iSpindel correctly fit inside tube
03:55 - Connecting to the iSpindel
04:57 - Offset calibration
05:44 - Setting the 25* float angle
07:09 - Deciding on calibration points
08:05 - Online calculators
08:31 - Setting up the online calibration tool
09:12 - First calibration at 1.000
09:44 - Creating sugar wash of highest gravity reading
11:23 - Calibration at 1.080
12:45 - Calibration at 1.070
15:22 - Calibration at 1.060
17:14 - Calibration at 1.050
18:08 - Calibration at 1.040
18:58 - Calibration at 1.030
20:23 - Calibration at 1.020
21:20 - Calibration at 1.010
22:34 - Calibration polynomial formula
SUGAR WASH CALCULATOR
chasethecraft.com/calculators
GRAVITY DILUTION CALCULATOR
www.brewersfriend.com/dilutio...
ISPINDEL ONLINE CALIBRATION TOOL
www.ispindel.de/tools/calibrat...
For other videos on building and using iSpindels, check out my other videos and subscribe to the channel!
The iSpindel is a digital hydrometer that lets you wirelessly see your home brew fermentation temperature and specific gravity. With built in WiFi, the iSpindel can connect to apps such as BrewFather to graph the progress of your ferment and be accessed anywhere in the world! The iSpindel can also be used to tie in with other hardware such as BrewPi / BrewPiLess in order to build fully automated fermentation temperature controllers. - Навчання та стиль
![How To Build Your Own iSpindel - DIY Digital Home Brew Hydrometer - Build Your Own TILT! [4K]](http://i.ytimg.com/vi/4HYzm0psaNw/mqdefault.jpg)
![How To Build Your Own iSpindel - DIY Digital Home Brew Hydrometer - Build Your Own TILT! [4K]](/img/tr.png)
![How To Link Your iSpindel With BrewFather - Track Your Home Brew Specific Gravity & Temperature [4K]](http://i.ytimg.com/vi/2ODbmZIq3NA/mqdefault.jpg)
Since creating this tutorial, the calibration tool has been updated and some people have been having issues adding in the "Degree 3" formula. It seems that this formula generated is occasionally too many characters for the iSpindels input. If you aren't getting readings working correctly after following this guide, try using the "Degree 2" formula instead.
I've calibrated 2 iSpindles using your method and the Degree 3 formula. In both cases I needed to convert the formula as outlined by another commenter (changing *tilt*tilt*tilt to *tilt^3 etc..)
The first iSpindle has required a +6 point offset in Brewfather to match the calibrated measurement, the second one which I calibrated yesterday appears to need a 2 point offset. Could this be due to the Degree 3 formula issue you're describing? How much less accurate is Degree 2?
big thanks for the detailed video!
ISpindel says after leading zeros keep only four digit and remove rest of the value for 3 point, becase there is only 100 characters you can use in your formula for example
if the original formula is 0.8910020972088459 + 0.009722287005560899 *tilt-0.000186268658368258 *tilt*tilt + 0.0000013210527877652706
*tilt*tilt*tilt you should simplfy as 0.8910+0.009722*tilt-0.0001862*tilt*tilt+0.000001321*tilt*tilt*tilt
I have 2 questios can I use tap water for calibration, and you start from the highest gravity value, can I start from the lowest gravity?
@@burctalug5651 Thankyou, you can't see that it has truncated the formula until you log back into it again, if it wasn't for your comment heaven knows how long it would have taken to figure that out, I knew from the start that formula was going to give me grief.
I found it much easier to start with a single volume of 20 degree water, then adding sugar to hit 1.010, 1.020. 1.030 and so on up. In my case 4 L water was the start and I added 103g sugar in steps all the way to 1.070. That avoided adjusting temps and frequent water handling/measuring etc. It worked out very well, nice tight curve and field trials verify that all is well. Thanks for the inspiration Wooly CB!
Hey Brian. Could I ask what kind of vessel you used to do this please? It would have to be both narrow and tall to avoid the ispindel touching bottom at such low gravity in 4 L whilst also leaving room for the sugar additions? Thanks!
@@craigsallabank7832It was a small canning pot, not something everyone has. The point is you find a vessel that works, pick a constant water volume and add sugar
As you said, it can't touch bottom or hang on the sides through the tilt range. My vessel was perfect for that
@@slowdownfox Yeah totally, that's what I will be doing. Just liked the idea of using your water/sugar ratios thus removing any additional trial and error. Thanks for the quick response!
I now know more about beer fermentation than I ever thought i would, and i'm fine with it.
Chopped ✌️
@mightybeermods
Commenting for the chopped sticker
Truly a great series of a very useful tool. Wonderful work... I’d love to see a video on how to get the best out of an ispindel with pressure fermentation. Cheers!
Fantastic Video - there is no way I would have had the patience or concentration to configure the ispindel without your guidance. Nice one
This is a really great video, I haven't tried to do it yet but your instructions are thorough and seem easy to follow. Thanks.
Hi - a great video, I've just followed it to calibrate my 1st iSpindel - it was easy to follow and repeat. I'd just like to point out one problem I did encounter. which I found in the iSpindel software. After getting all the readings, I entered them into the calibration tool to get the formulae to enter into the iSpindel config page. The 1 point and 2 point formulae worked fine but the 3 point formula would produce rubbish results. After a lot of head scratching I noticed that the formula was being truncated by the iSpindel - the all constants had become so long they could not fit. So I reduced the three constants to have only 6 significant figures and it now works fine, giving results that are fine up to 4 decimal places of SG. ( eg 1.0825) which should be accurate enough for anybody.
Absolute bloody legend. Thanks so much for taking the time to make these vids mate. Clear and easy to follow. Why would you ever buy a Tilt?
Great videos, I really appreciate you taking this effort. Cheers!
amazing video. professionally done and the delivery is very clear and interesting.
I rarely comment on videos, but mate, this is fantastic! So clearly explained. Thank you!
Boss! Proper decent video for a noob like me to follow cheers. You convinced me to get one!
Fantastic video, very well explained
Thanks, very useful. I wrote the angles and gravities down and inputted after. Found a water filter jug worked really well, high gravity you can start with 500 ml of solution then subtract some and add each time. One litre volume and it was fine at 28 degrees my final reading.
Used the sugar water to bottle my beer or in a brew.
Thanks a lot for the detailled tutorial. I finally calibrated my iSpindel! I did something different, as I ended up with 29L 3°P sugar solution... oh, well!
Cheers, great video, just what I've been waiting for. Shame I smashed my hydrometer today!
Pretty good video mate. Appreciate it.
Great Work!
Great videos. Subscribed.
Nice video, thank you
Thank you for your informative video.
I don't think that using the assembly's position in the tube is a clever means of adjusting the pure water tilt angle.
As soon as you insert the USB charging cable, the unit's calibration will be lost.
My iSpindel's unity SG tilt is 31.69 degrees with the PCB pushed to the bottom of the tube; I am quite happy with that.
There's plenty of resolution with this device and it seems pretty accurate.
The battery voltage also needs calibrating, mine was over 5% too high.
Great vid
Perfect explanation. I know pretty sure where I'd end up putting a large jug of water just next to a laptop..
I’m going to do this in my easybrew (brew monk): when you turn it on it will state the temp on the screen. Also it’s 30L so I wont have to take water out in between. And once done I can just dump it through the tap.
Again, fantastic video! Subscribed.
Great video! I like that style.
How do you get (and keep) your (tap) water to exact 20 degree Celcius?
Great video! Could you please do a video for fast ferment method
It shows that you have put effort into this video, which is much appreciated. Thanks!
thanks for this very clear video!
just went through the whole process with your supporting video. *thumbs up*
Once you calibrated, when does i require a re-callibration? When I charge the ispindel it always moves a bit in the tube; is my callibration off in that case and is re-calibration needed? (hope not)
Just imagine the "witches" back in the day if they had this equipment haha.
Hi. I have 3 new iSpindel. Done the 0° calibration on all 3. All went ok. The 25° calibration though varies between 17 and 18°. I think this is due to batteries being to heavy (48.5 grams rather than 44). No room to move the board up to compensate. Will this 25° being off this much will affect the overall reading after I due the complete calibration sequence? Thanks for an excellent instructional video.
Great tutorial! This question is asked a few times in this thread and no answer: if you're adding known quantities, why measure each time? It's quite common that hydrometers/refacto's can be quite inaccurate and have a range curve. By doing this you're imposing any innacuracy of your measuring tool into the ispindel. Better keep to accurate quantities of water/sugar and use the sg given from the calculator web page. Any opinions on this, am I wrong here?
Hello, thks for the video. Do you know what is the max temperature that the iSpindel can undertake in the bucket ? wanna check a flash pasteurization temperature with it. cheers
Do you really need a hydrometer for reference if you've added a known quantity of sugar to a known quantity of water???
Hi, thanks for great video. Have a question, I am still getting SG 1.004 in Brewfather. I tried to put 3rd formula, 2nd but nothing changed. Am I doing something wrong? Everything works great. Tilt, temperature and so on. It seems like its not measuring at all
great video..
I have an issue whit the battery conversion fator.. I cannot go over 230 fator to correct the voltage displayed..it backs to default 191,8 every time. Any known solution to this problem?
Is there any other sugar was calculator that will work? The one listed is no longer on the website
In maintenance in calibrate tab it the led stays on and never blinks. Why?
Isnt the ispindel supposed to give you gravity readings as well as temp? I am using the Brewfather App and I am only getting temp readings.
Thanks. Great tutorial. Can you change the SSID of the Ispindel itself? That would be great if you are calibrating multible Ispindels in the same water.
If you give the ispindel a different name the ispindel network is given that name. Eg ispindel001 and ispindel002 I used 2 phones when I did two and kept network open for each one.
Why would you use the refractometer at all if you're calculating the exact amount of sugar in the water? Isn't that inducing inaccuracies?
- Honest question.
I want to calibrate the ispindel for sugar wash fermenting but will go from 1.200 sg to 1005 sg, do I need to take .10 steps down or can I take .50 steps down to calibrate?
My tilt is 84.92 what happen?
Brilliant video and easy to follow (especially for me, lots of numbers tie my head in knots, but this makes it clear). One question, if using a hydrometer word you float it in the pot or use a sample tube?
Thanks for this video. It has quickly convinced me that these devices are more trouble than they're worth. I'll stick with my trusty hydrometer.
Great video just calibrated mine. When are you doing your next videos? I’m unsure what to do with the formulas now I have them. I’m using Brewers friend btw.
Put all of formula 2 into the polynomial box in the ispindel. Its the last box on the configuration tab just above save, don't forget to save as well.
Note latest software 7.1.2 wipes your config if you update
@@duncanbayne3078 thanks!
Hey, might be a silly question, but "pure water" = tap water or distilled water?
If you want to be totally accurate then you should use distilled and deionized water for this. Tap water is far from pure.
I heard using cooled boiled water is better than straight from the tap.
why not do the gravity changes in reverse, ie start with plain water and add sugar then measure , add then measure etc, The measurements dont have to be exactly every 10 points
you have to do this before you use it everytime?
Ofc not unless you fiddle around with your iSpindel in a way that would throw the balance which it was previously calibrated on.
@@Jagemon would changing the battery throw the balance?
@@JohnnyReverse I would calibrate after changing the battery. But it's a rechargeable cell that you charge through the USB port, so you should not need to change it very often, at worst yearly maybe. Depends on how much you use it and how you store it. My main worry is fiddling with the USB charging cable might move the PCB in the tube and throw the balance off, but it's probably not a big issue if the fit is good.
Who thx for this video! A very small question, very stupid, but once we got the formula from the calculator, what did we do with it? I read that it was necessary to put it in a dynamic variable on the unidot site ... but I am not sure. Shouldn't it be put in the polynal formula in the ispindel configuration page?
Hi Dorian. I will have videos coming out soon showing the whole process for linking to different apps like Brewfather and Ubidots. For now, Open Source Distilling has a great video on linking to Ubidots
@@WoollyCraftBeer Ok thx!
I think in Ubidots it takes your tilt angle and does the math in Ubidots to give you Plato/SG. If you're using brewfather you have to update the fomula in Plato in the configuration page of the iSpindel and you'll see the results that the iSpindel is spitting out displayed in brewfather. docs.brewfather.app/integrations/ispindel
How does it compensate for all the co2 bubbles that sticks to the surface of it and ineviatbly will skew the values.
If your results are impacted significantly because of this from fermenting under pressure, you can calibrate using the "fast ferement" method. You would basically kick off a sugar wash fermentation, and take tilt and SG readings during a real fermentation so the results show exactly what you expect. But for 90% of people who are using these, the readings aren't significantly affected enough by CO2 to need to worry about that
@@WoollyCraftBeer I was thinking since the turbulence that co2 bubble in the sea causes can be enough to sink ships that it in a wort it would definitely be enough to give you a lower gravity reading than actual. I guess it's the relative value over time that is interesting though rather than the exactitude of the values themselves.
A 27 gram vertical hydrometer (that relies on vetical float level) is thrown off a lot more by CO in a "normal" (unpressurized) wine/beer fermentation than a ~75 gram digital tilt hydrometer. The bubbles will collect on the bottom and the sides. The sides will counteract some of the error. I'm not saying there won't be error due to CO2 in a tilt style digital hydrometer, I'm just trying to help you visualize how the physics are different between the two situations. The added weight of the tilt-hydrometer helps, and some of the bubbles collecting up higher also helps.
Also, you're right: The relative value over time is very interesting. When the value isn't moving very much any more, you know the fermentation is either done or it is stalled. When you see your temperature start to dip, you know it is time to do something, just to mention a couple use cases.
I purchased one after watching your videos but I have got it in, the guy I purchased it from says its already calibrated. But how do I connect to it with my laptop or phone to read what it is putting out ? I am clueless ! Thanks Barry Wray.
remove the lid of the ispidel and tap the two pins 4 times with the back of a spoon or something. Search for wifi connections on your phone or laptop and you will see ispindel appear, connect to it and it will say, "you are connected without internet and you need to visit the site". Click the box if it doesnt take you there and a settings page should appear. Click the isindel info box and it will tell you the, tilt angle, temperature, battery and gravity if its calibrated.
You will need to click the maintainance box to add your home wifi network and password.
In brewfather goto settings and add ispindel and copy the url from there and paste it into the box within the maintainance section of ispindel then click save.
It will probably take a few attempts but you will get there.
I found that using two devices, phone and laptop was easier with brewfather open on one and ispindel settings open on the other.
What app to use on the phone?
But don't you have to plug the new polynomial formula back into the ispindel configuration page?
That's what I want to know as well ! ... and which one, as the new tool gives you 3 differnet ones
@@npoBaJl you can choose either one of them (the third being most accurate) and indeed copy it to the iSpindel configuration page.
@@JoostHart Thanks for responding! It looks like different firmwares will allow you only so many characters, so mine is stuck with the first one, as the others are too long and it buggs out
@@npoBaJl you van simplify the third formula. Read through the comments here.
You can ship it to thailand?
I just want to connect the bloody thing
192.168.4.1 is not loading. Any ideas?
Sugar wash calculator doesn’t work. Website must be knackered
Not sure I got the formula bit right, it wasn't the same as it was in the video.
Does this look righ?
0.846888059387451+0.01015634607689674*tilt-0.00020190080096268398*tilt*tilt+0.0000015827172421285874*tilt*tilt*tilt
A little concerned at the false info on using the Hydrometer - who uses paper towel to clean it off? Normal people wipe it on their shirt ;-)
Does the spinden fit into a glass carboy..
Music too loud
Hello, How do I connect to my Android mobile phone handset? Thanks
So what if I have no blue light on my iSpindel and it doesnt show up on my wifi list?
Hi Mate! Thanks for the wonderful guide! One question; I did precisely as you guided but got a bit different results. Here is my specific gravity degrees.
Degree 1: 0.9560702826776606 + 0.0018362306008796424 *tilt
Degree 2: 0.9374543732914529 + 0.00270791697042833 *tilt-0.000009270867429126364 *tilt*tilt
Degree 3: 0.8314659907695731 + 0.01017605927266144 *tilt-0.0001749657457035764 *tilt*tilt + 0.0000011663056828545616 *tilt*tilt*tilt
What's up with those *tilt- markings? Is this a usable reading at all?
You missed a step. There is no point calibrating it to 20 degrees unless you tick the box in the calculator. Also to put in how many degrees you have your wort at. Your formula will be different. Although a good video simply missing that tick box makes your formulas incorrect.
if this is the easy method then what's the hard one lol
man... I don't know if you noticed this, but you talk so fast, you even lose your breath from time to time.
Are you kidding me? This is absurd. I’m sending mine back for a refund. 👎🏼
You talk too much.