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A comment on Hacking a Philips Sonicare Toothbrush. Parent comment

Re:Hacking a Philips Sonicare Toothbrush by HarHarVeryFunny on Wednesday May 31, 2023 @09:25AM (#36138111)
After a ton of research I got an AccuCheck scale (~$30 on Amazon) which I'm happy with, and at least avoids most of the problems with modern digital scales. Clean minimalist look. Takes 3 AAA batteries.

https://www.amazon.com/gp/product/B084SFRSBD/

It claims 0.1 lb accuracy, and seems pretty repeatable, but I haven't tested it for accuracy. These digital scales have multiple sensors (this one has 4), so it makes sense that individual sensors may give different readings as you shift your weight around - not sure if there's an exact science to combining the 4 readings into the single one that is displayed.

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Re:Hacking a Philips Sonicare Toothbrush by nuancebydefault on Wednesday May 31, 2023 @11:34AM (#36139527)
Luckily the exact science is an adding operation, ifi the sensors behave in a linear way, that is.
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Re:Hacking a Philips Sonicare Toothbrush by numpad0 on Wednesday May 31, 2023 @09:44PM (#36146742)
0.1lb is ~0.5kg so same precision as parent. 0.1kg is 0.22lb, or literally glass half full of water, or slightly less than two Medium eggs, or 2/3 an empty glass itself, or 2/3 an iPhone, etc. 0.1lb/0.5kg/500g is about 16 fluid ounce in water, so it's probably a good balance point.
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Re:Hacking a Philips Sonicare Toothbrush by dhosek on Thursday June 01, 2023 @02:02AM (#36148006)
Your math is off. 0.1lb is ~0.05kg. 0.5kg is ~1.1lb.

0.1kg is the weight of 100ml of water, which is about 3.3oz

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