How to calibrate (& miscalibrate) a digital pocket scale 

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.

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.

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 😂

I don't know to connect mot as well would nice sure.

Do want to try a new pocket scale? Buddy

Do want to try a new one? Buddy

Do want to try a new one? Buddy

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.

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

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!

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.

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.

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%

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

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

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

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.

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.

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.

Do want to try a new pocket scale? Buddy

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

Do want to try a new pocket scale? Buddy

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).

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..