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TrackWeight: Turn your MacBook's trackpad into a digital weighing scale

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Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale

#141

Earlier quoted context omitted.

I used to travel with one of these[0]. [0] https://en.m.wikipedia.org/wiki/Macintosh_Portable

That thing will break your scale.

Yup. Extra batteries were also necessary.

Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale

#142
post #41

Earlier quoted context omitted.

This worked all the way up through the iPhone Xs.

The single most irritating killed feature from Apple. Redesign half of their UI to rely on 3D Touch to make sense, then get rid of 3D Touch without redesigning the UI. Previewing links, moving the cursor, interacting with items, they’re all “press and hold until haptic feedback” instead of “quickly press hard and get immediate feedback.” Easier to accidentally trigger, slower to trigger on purpose.

Apple UX is generally very bad, especially around discoveribility.

Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale

#143
post #85

Earlier quoted context omitted.

Nice. No, I preemptively armed myself with a carrot before taking the dog for a walk in cold weather. I only had a non-stylus smartphone for a year and a half before whimpering back to the Note series. It's what keeps me in the Samsung sphere of influence.

I used my nose.

I've done that many times while working on something and my hands are filthy.

My nose-eye coordination leaves something to be desired.

Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale

#144
post #3

There used to be iPhone apps that did something similar - https://www.theverge.com/2015/10/28/9625340/iphone-6s-gravit...

My memory was that the weight API was made private because they didn’t want people using iPhones for drug deals.

Apple, policing use of an API on a privately-owned device for purposes of a consensual, non-violent activity that is only technically a crime in some legal jurisdictions? Sounds about right.

Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale

#145
post #62

Earlier quoted context omitted.

No, you need roughly a small human's worth of ground mass for most capacitive touch sensors to register a touch.

ground mass?

If you don't have ground human presumably you can substitute ground beef or ground turkey.

Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale

#147
post #62

Earlier quoted context omitted.

No, you need roughly a small human's worth of ground mass for most capacitive touch sensors to register a touch.

How do capacitive pens work?

You electrically couple to the pen, unless they are active devices, in which case they generate a signal.

Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale

#148
post #61
post #3

There used to be iPhone apps that did something similar - https://www.theverge.com/2015/10/28/9625340/iphone-6s-gravit...

You can use any phone with a barometer to make a scale. All iPhones since the 6, and all the Pixels, and Samsung flagships have one. You get a zip loc bag, blow some air into it, put your phone in running an app that shows the pressure in a big font (so you can see it through the ziploc). Then you put an object of known weight on it like a quarter (balanced carefully on top of the air-filled ziploc) and note the pres…

Neat. This method also assumes constant ambient pressure and temperature, and an ideal ziplock bag. (I.e., not stretchy, completely convex, and zero leaks.)

Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale

#149
post #147

Earlier quoted context omitted.

How do capacitive pens work?

You electrically couple to the pen, unless they are active devices, in which case they generate a signal.

That can't be, they work with gloves and things. My gloves even have a thing at the end that works with the touchscreen.
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