How to calibrate (& miscalibrate) a digital pocket scale
Вставка
- Опубліковано 25 жов 2020
- Today, let's see how a digital pocket scale is calibrated using a calibration weight. My 500g max / 0.01g resolution scale requires a 500g calibration weight for its calibration. The calibration process is entered by a long press and then a short press of the UNITS button, it briefly displays CAL and then blinking 500.00g, then the calibration weight is put on the scale, then it displays PASS and it's calibrated.
What's inside this scale & how does it work:
• What's inside a digita...
Support me on Patreon and get early videos:
/ diodegonewild - Наука та технологія
thanks, now I know how to scam my clients when I'm selling dope
nice
Unless they tested your scales with a calibrated weight. But I honestly can not imagine anyone carrying an accurate weight around with them.
www.usmint.gov/learn/coin-and-medal-programs/coin-specifications
dollar coin 8.1 g
half dollar 11.340 g
quarter dollar 5.670 g
dime 2.268 g
nickel 5.000 g
cent 2.500 g
ec.europa.eu/info/business-economy-euro/euro-area/euro-coins-and-notes/euro-coins/common-sides-euro-coins_en
2 euro coin 8.50 g
1 euro coin 7.50g
50 cent 7.80g
20 cent 5.74g
10 cent 4.10g
5 cent 3.92g
2 cent 3.06g
1 cent 2.30g
What would be really cool would be to have your own firmware that reports all weights back correctly, except for ones near the weight of your dope, which it adds 20% extra to the displayed mass!
People have in the past modified the control boards in petrol pumps to do something similar. It would return the correct value for government weights and measurement amounts, and then once past the amount typically taken during a yearly legal calibration test, it would slowly ramp down the volume of fuel delivered through the hose by 20% while keeping the price charged incrementing at the same rate.
99.9% of the LIKES are from newbie dope dealers. xD
@@itsevilbert Coin wear seems to be an issue. I checked several 0.50€ and 1€ coins i had and they had a variation of up to 0.05g - if my scale is to be believed, they were all between exact and slightly underweight.
I bought one of these scales on Amazon and after that all my suggestions were for drug paraphernalia.
Amazon even sent me a bag of free crack with the scale cuz pure coke was on backorder. xD
Do want to try a new one? Buddy
do you need a new small scale? can send you for free.
Omg his voice. I can’t.
He can’t really change his voice. Poor show gurl.
This Cams person is a wet diaper. I’m with you Lisa, I’m dying
It's better than morgan freeman
🤣😅🤣
Borat brother 😂
Oh man, after hours of looking for a simple explanation of how to calibrate my digital pocket scale, I fell into this cute video, and I must say it is super interesting and super funny. Your way of going down into simple but important details + your accent makes me want to watch all your videos never mind what they are about. Thanks, DiodeGoneWild you are a genius!
Thanks man! I had no idea it could be calibrated. I was measuring things off by about 0.5%, and tried doing the math for estimated weights. Not something you wanna be doing when measuring powder for reloading. Everything looks good now though!
Thank you ! THIS WAS VERY EASY TO FOLLOW ! I appreciate your content
Thanks, you left a badass writeup (one line in particular) in English about how to use it. Really wished that I understood your words, sounds interesting for a storytelling. 🤣🤣
I'm here for the accent, not for the digital pocket scale
YOU DO REALIZE THAT PEOPLE WITH FORIN ACCENTS ARE TO BE FEARED AND HATED BECAUSE THEY ARE DIFFERENT FROM US?
@@esecallum Never trust someone with an accent!
@@34.FB.34 yes always fear and hate them. these foriners are hear to steel our jobs and rape our womun
Good to know, I have access to proper externally approved calibration weights at work, gonna use this chance
Thank you I learned how to calibrate my 3 pocket weighing scales
Hi nice video . You should make a video about where you show how to connect multiple MOTS . Your schematics which you include on your website are good but it takes a while to understand . Have a nice day
I don't know to connect mot as well would nice sure.
Very cool thanks 🎉🌟
Thank you very much!! 😀👍
Really good ideas
Do want to try a new pocket scale? Buddy
This method uses a low quality scale to determine the weight of it's calibration weight which in turn makes the calibration done afterwards useless. You don't even know what weight you are calibrating for, your 500 grams might actually be 600, because these scales have been known to show 120g when used with an actual 100g calibration weight.
So interesting... Thank You
Do want to try a new one? Buddy
Interesting! Nice overview of the calibration mode, and yes, I viewed the other video on these scales also :).
Do want to try a new one? Buddy
If you watch this video high you're gonna get a good laugh 😅
I'm high AF and it's just annoying
Do want to try a new one? Buddy
It's not bad but its still in accurate
Free palestine!
Here in India our local grocery shop used this recalibration technique to cheat people. But then once the government officials came, and tested the scale. They found an 1kg test weight shows 800g or so. The police arrested him.
Shouldn't have been so greedy - people are soon going to notice you fiddling them by 20%... 5% and you'd probably get away with for longer.
@@joinedupjon nobody noticed. The guy knew that everyone is idiot here. Even I never cross-verified.
@@PrajjalakChattopadhyay OK... when I went to the USA the beer there comes in US pints which are 83% the size of a UK pint and tbh it's very noticeable that you got less than expected if you're used to UK pints. I guess fraudulent shopkeepers have to slowly increase the mis-calibration over months cos people would notice if you suddenly started giving them 80%
Thanks man
your voice should be funny in an animated show or even sitcom :))
Dude is sesame Street still runs on air you would be the perfect count one hahaha too hahaha three the letter of the day lol
Hope you have a wonderful day man thanks for the tutorial
you shouldve added a bit of tape to the 500 gram weight to make it perfectly 500 grams
Or some matchsticks.
The problem is that we don't even know if the "500g weight" was actually 500g. He used the existing calibration on a cheap low quality scale to determine the 500g weight, so in the end it is no reference at all
Do want to try a new one? Buddy
Trust you to put a massive weight on it lol :-D
I have a similar scale, i used it to weigh tiny ball bearings for equal weight, i did not have a micrometer to measure there diameter and that's all i had to get roughtly the same size bearings.
Some one had taken apart a gimball mount for a record player arm and lost some of the balls.
The eBay masspieces are not useful if you do not have a verified mass for them. They are almost never accurate to more than 0.05%, and can vary a little depending on how they were referenced during manufacture. Had them verified by a metrology lab, which cost 10 times the price of the masspieces, but now I know the exact mass, down to 3 digits after the decimal point.
Checked before sending, and had to adjust the one up by 0.5g to get it to exactly 100g, which was easy, as they have a small pocket in the top under the screwed on handle, for this mass. Little pieces of solder added to those there already to get it correct. Yes I did see the reference kilogram there in the vault.
1:22 he is the chosen one 😂😂 nice video.
3:00 - It doesn't «amplify every small error», it's sensing your very breath! XD XD XD
he's in a large city, so there's prob. also vibration from traffic...
@@AKAtheA he actually mentions the very same guess shortly after that first assumption.
thankyou, i love the accent btw.
Thanks for the videoooooooooooo
Oaaa bro, sos el mejor
Díky za návod , horší je mít 500g přesné kalibrační závaží.
Very informative - i wonder - all the scales with different weights they sell are probably the same calibrated differently :-)
The load cells are different. If they get overloaded a significant amount they will deform permanently and the scale would no longer give meaningful measurements.
More black magic devices please!
Try pressing other buttons between the long and short *UNITS* press. Maybe you can set other weights to calibrate to, or maybe even the range of the scale. I have also seen a 2-point connector labeled *CAL* on some scales, probably enabling calibration when shorted with a jumper. Or does it receive serial data through the connector?
Mine says in the manual that you need the wight corresponding to the max range of the unit.
@@pizzablender Makes sense. Do you have the same model as DiodeGoneWild?
Push the tare button while flashing to change weight calibration.
Does it die during weighing like some of these cheap weights? and does it weigh from 0.01g or it only starts at 0.5,0.7g and so on?
I buyed it 2.2$ and it's good. i compared this scale with another coffee scale.
Nice video
Please make video of Synchronous Generator AVR reverse engineering schematic, I have already commented on your last videos
Did you try calibrating at 50g? If so did you get a useable extra digit resolution? I doubt it somehow but that would be cool.
That's what I'm wondering too, is the ADC precise enough to get milligram accuracy?
That was my idea too :D
five 2 euro coins (8.50g each) and one 1 euro coin (7.50g each) should be 50.0 g
@@itsevilbert Coins vary more than you think. Using a calibrated precision scale I weighed a load of British coins...Well I should have started by saying British coins vary a fair bit. It was only about one in ten that were within a digit or two at 100th/g of specified weight even among mint examples. I can't remember the deviation values. Euros are probably better...But coins are not weights to rely on unless you select them.
@@martinda7446 As long as they are untarnished, new coins fresh from the bank they are pretty close to 2 digits for Euro coins and 3 for US coins. But with tarnish, oil, finger prints and accumulated gunk, all bets are off as to how accurate they are.
I have the same (looking) scale. after entering calibration weight you can press tare and it changes to 200, 100, 50. So I guess it can be calibrated with other weights. Could you try that. I don't have 500g weight so don't want to risk my scale
You can buy a 200g calibration weight forc€2,20 and try.
If you cannot calibrate it directly you can calibrate it with a bottle with half a liter of water and check it with the 200g weight.
Adjust the water in the bottle and repeat until the scale reeds 200g with the 200g weight.
@@Conservator. Or if you are in the US 200 new 1 cent coins weigh exactly 500.0 g. Or 100 new nickels weigh exactly 500.0 g
I wonder if that's not so much for using different weights but further calibration, assuming these sensors aren't perfectly linear.
@@itsevilbert If someone does not have a calibration weight and is in a rush, in Europe.. you can make 100g with: 6x (1 cent) + 2x (2 cent) + 2x (5 cent) + 1x (10 cent) + 1x (20 cent) + 8x (50 cent)
Do want to try a new one? Buddy
hello please I made a false mannip I calibrated the scale to see what it was and since then I can no longer put anything on it impossible to weigh
I wonder .... if you used a 50g precision weight for the calibration process instead of 500g, how close could you get this scale to milligram accuracy? I'm assuming that the load cell response is linear, which it might or might not be. And obviously you'd need to come up with a modified way of reading the display because the decimal points might be wrong.
I would test the scale verses a set of calibrated and certified calibration weights. That way I would know precisely what numbers I should get. But It will cost you.
A full set of weights is (100 g to 1 mg) 100g, 50 g, 20 g (x2), 10 g, 5 g, 2 g (x2), 1 g, 500 mg (0.500 g), 200 mg (x2), 100 mg, 50 mg, 20 mg (x2), 10 mg, 5 mg, 2 mg (x2), & 1 mg. An ASTM Class 7 set will cost you ~ $100.00 with no certificate, ~$300.00 US with a NIST Traceable Certificate or about $600.00 for a set with a NVLAP Certificate. For an ASTM Class 1 set in the same weights (much tighter tolerances) the prices are about $1,000.00, $1,500.00, and $2,000.00 respectively.
If you have access to a lab with a set of calibrated weights and a semi-micro (100.0000 g or 200.0000 g to 0.00001 g) or analytical balance (100.0000 g or 200.0000 g to 0.0001 g) you can use NIST SOP 7 (available online) to calibrate your weights yourself and generate your own certificate of calibration.
Alternatively you can buy a set of used weights (Class 1 or S) and have them adjusted and calibrated to ASTM Class 1. Troemner or Rice lake will do this for about $600.00. A single 50 g weight cost me ~$40.00 + S&H to have calibrated (50.000036 g +/- 0.000040 g).
Yes, I do this for a living, so I have this stuff at hand.
You want to do three test to check the balance.
Linearity - You check the reading against each weight in the set over the full range of the balance.
Corner Load - You check the reading of a weight at5 each corner of the weighing pan to see if the balance reads off center weights correctly.
Repeatability - You weigh the same weight 10 or 20 times to see what the variability of the balance is.
I would use the 10 g weight for Corner Load and Repeatability tests. Plan on spending a slow Saturday afternoon doing all this.
Great information for analytical scales. Simply ridiculous for the scale on the video.
@@PatricioRomero_xumi Yes, I know. But they could at least buy the single weights needed to calibrate the thing. That will set them back about $20.00.
Hi! It says "full" now where it used to say "pass". Any idea what thats about?
This could prove useful
Do want to try a new pocket scale? Buddy
I have the same exact scales
As this video is showing an I never have a problem recalibrating it but tonight it says error when I hit the thing to recalibrate it. I’ve changed batteries an have it on a flat surface but still tells me the same thing, anyone else with these exact scales have the same problem? If so can someone please explain to me why this is happing to me?
No i have dedicated scale for selling and one for buying.
I dont understand
I have the same calibration weight and scale options
If i choose 200g calibration option and place 50g scale on it still say pass? Why is this?
How to start the calibration if it says out2
👍
It shows FULL error when calibrating no matter what weight I put, why ?
Stoners: *entered the chat
This guys high 😂
so i have the same scale but with a max capacity of 200g. I accidently miscalibrated and now whenever I try to recalibrate (by putting on 200 ml of water for example) it says it's overloaded, so I can't recalibrate it again, what can I do? is there a factory reset?
Take the batteries out for at least 10 minutes or so and when you put them back in, it'll be ready to properly calibrate (done it myself)
This is what I needed answer to as well. Only 1set of scales and instructions didn't tell me I needed to find something that weighs 50g before I pressed calibrate. Taking battery out now for 10 mins. Didn't know u have to leave them out for 10 minutes. Thanks
I just don't understand, you're using an uncalibrated scale to weigh 500g... and then using those wrongly weighed 500g to calibrate it?
i had a feeling you were czech haha, then i saw the korunní
Please do a video on induction cooker.
"Longa presss" that means calibration yes? 😁
How do you calibrate for 12 grams to 14 grams
Naiicccss
If the scale isn't calibrated in the first place then how would it know if what you placed in it was indeed 500g or 2g?
It wouldn't, that's sort of the point of having the calibration weight. The numbers on a digital scale are more for our benefit than the sensor itself. The 500g (in software) really corresponds to a very specific resistance (with some margin of error) output from the amplifier connected to the strain gauge used as a sensor in these.
If the weight of the scale was known, could we calibrate it just by turning it face down?
Interesting idea. But what about the batteries. You would have to have a precisely known battery weight.
Do want to try a new pocket scale? Buddy
In the US, a nickel is 5g so 5USD in nickels would (should) be exactly 500g.
Do want to try a new pocket scale? Buddy
Nice thumbnail lol
and where is the SALTTTT!!!??
If you have another super accurate scale, you could just fill a container with water until it weighs 500g, then use that as your calibration weight.
Why-a do you-a sound like-a mario and-a luigggiiii-a
Sir i have hanging scale but it doesn't show me the weight whn i m going to put some weight in continue process.
If I put som weight of 5 kg in bag n hang it then put some more in it.it shows only 5 kg again
Ser pano po ba malaman kung full na ang chargs ng DIGITAL pls po
Plugs love this trick
Where are you from
👍.
Охренеть английский )))
Single point calibration? Hard to believe that’s an accurate enough way to do it!
Zero is the second point :). And load cells are probably quite linear...
Thank you. I bow to your much greater knowledge! 🙌🙌🙌🙌🙌🙌
@@jerome_morrow Most balances (even $20,000.00 Semi-micro or micro balances) use a single point calibration. To fully characterize the balance you then have to carry out a full calibration check (Linearity, Corner Load, and Repeatability Tests).
Mine looks the same, but the calibration is at 200g
MINUMUUM
it sounds like ur making fun of us
Kos Kash in che lahjei hast
Hor
Soviet weights)))
This is ridiculous
No se nada de ingles, pero pienso que seria que Apu le explica a
Homer Simpson..
Como funciona la basculita..
Creo que vive en República Checa, desde sus primeros videos tiene un tono particular de voz.
Su inglés es el más facil de comprender, habla bien fluido
@@andricode si creo que en otros vídeos dice ...su pais es Checoslovaquia y que usan coronas y no Euros...
Gracias y saludos..
Why do you speak like thaaaaaat?
White dude🤣
First!
Your voice is so uncomfortable
Why do u exhale after saying everything in a snobby white girl accent
Why are youuu talkingggg like thattttt? By the way, buy some other scale, this one is terrible and you have to calibrate it constantly, if you want to measure properly.
are you a gay?