General > General Technical Chat
You want a digital scale for What??
Brumby:
Aside from the body scale in the bathroom, I have a range of digital scales from 5kg/1g down to 20g/1mg. The only time I've used any for drugs is when I needed to prepare 1/4 of a tablet of some medication for our dog, when the tablet didn't break cleanly in the pill cutter.
Two units have been modified to become computer connected - a 3kg/0.1g scale using an Arduino compatible MEGA board with a barcode reader for recording weights of barcoded products. The other was a 20g/1mg scale with an Arduino compatible Nano doing timed sampling for an evaporation study.
I do have one very small one which is a bit bigger than the tiny one shown above, but it played up, so it got put aside. Then one day a year or so later, I came across it and tried it again ... and it worked. This saved it from the bin - but I don't have any confidence in the stupid thing, so it will probably rot away.
dkim5nu:
Reloading (manufacturing ammunition for guns) requires precise measurement of explosive powders. For example, 9mm round requires a range of 3 to 5 grains of explosive powder inside its shell casing behind a projectile. There are 7000 grains in one pound and 454 grams in a pound, so that's about 0.195 grams to 0.324 grams per round of 9mm. Anything more than that, the ammunition is going to blow up your hands.
Strand17:
Hello,
People who fly rubber powered model airplanes indoors use this kind of scales. We are no big market, but still...
One example of the model airplanes we fly is the F1D competition class. The minimum weight of the structure (airframe) for a 55 cm wing span aircraft is 1.4 grams and the rubber motor (rubber band loop) must weigh no more than 0.4 grams. Flight times range from 15 to 40 minutes depending on the height of the ceiling and the flying conditions. Since we travel to competitions, portable scales are really helpful.
In fact 0.01 gram resolution is a bit coarse when keeping track of the weight of structural parts when building to a target weight or when preparing rubber motors. :)
Here is a link to a video a which conveys a bit of the feeling of indoor freeflight.
Best regards,
Jonas
KL27x:
--- Quote from: wraper on July 30, 2020, 11:00:20 pm ---Counting parts. Instead of counting hundreds of parts as an idiot, weight one (or a few for better precision), then weight all of the parts, calculate total number number.
--- End quote ---
This is my most common use for my scale. But the first pic of the thread? It's a little confusing, but doesn't it look like a mini pocket scale disguised as a key fob?
The obvious purpose is to disguise it from the popo, no?
KL27x:
Or boss, or coworkers, or family.
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