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TrackWeight: Turn your MacBook's trackpad into a digital weighing scale
151–156 of 156 posts
Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale
#152[dead]
Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale
#153Earlier quoted context omitted.
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.)
I don't think stretch would matter, or even leaks for that matter. It'd still find equilibrium at the same pressure, no?
Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale
#154Earlier quoted context omitted.
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…
Wait, I know this one. You give the barometer to the superintendent if he tells you the height of the building.
Not everyone got the Niels Bohr joke that you subtly pulled there.
Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale
#155[dead]
Re: TrackWeight: Turn your MacBook's trackpad into a digital weighing scale
#156Earlier quoted context omitted.
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.
You’ll have to be more descriptive for me to have any hope of answering.
If by your gloves have a thing at the end you mean a patch of special fabric, yes, that fabric conducts from your skin to the screen.