Electronics > Projects, Designs, and Technical Stuff
How does this weight scale power on? (step-on)
IDEngineer:
--- Quote from: james_s on April 05, 2020, 10:05:52 pm ---I have one of those calipers too and it drives me nuts. It would have been far better to just have a conventional switch, or at least a button to apply power that could latch on.
--- End quote ---
This covers two of my pet peeves in one post.
1) Digital calipers are "cool" and all that, but I have and use "old-school" dial calipers. I have one set that has two indicators and two scales on the dial, one in inches and the other in millimeters. You can instantly read in either unit, don't even need a finger to push a button to "convert" from one unit to the other, and calibration is guaranteed by confirming zero before opening them. I'm all for advanced technology (it pays my bills!) but sometimes simpler is better.
2) What is the obsession with "soft" power switches? In systems where some subsystem must be continuously powered, sure. But for something like calipers? And if they're determined to not have a conventional power switch, why not just sense movement? That would be even cheaper and more reliable.
langwadt:
--- Quote from: IDEngineer on April 06, 2020, 05:54:57 pm ---
--- Quote from: james_s on April 05, 2020, 10:05:52 pm ---I have one of those calipers too and it drives me nuts. It would have been far better to just have a conventional switch, or at least a button to apply power that could latch on.
--- End quote ---
This covers two of my pet peeves in one post.
1) Digital calipers are "cool" and all that, but I have and use "old-school" dial calipers. I have one set that has two indicators and two scales on the dial, one in inches and the other in millimeters. You can instantly read in either unit, don't even need a finger to push a button to "convert" from one unit to the other, and calibration is guaranteed by confirming zero before opening them. I'm all for advanced technology (it pays my bills!) but sometimes simpler is better.
--- End quote ---
https://youtu.be/CGZeaAamD0k
IDEngineer:
--- Quote from: langwadt on April 06, 2020, 07:11:50 pm ---https://youtu.be/CGZeaAamD0k
--- End quote ---
Yep, which is why I said "sometimes simpler is better". Other times, more complex gives you more features. Just depends on the task at hand. In short, use the best tool for each job.
Dave:
--- Quote from: james_s on April 05, 2020, 11:16:49 pm ---Isn't the sensor on those absolute using capacitance?
--- End quote ---
Nope. Try pulling the strip from a broken one, if you ever have the chance. The metal pattern is uniform along the whole thing, no variation whatsoever.
langwadt:
--- Quote from: Dave on April 06, 2020, 07:56:30 pm ---
--- Quote from: james_s on April 05, 2020, 11:16:49 pm ---Isn't the sensor on those absolute using capacitance?
--- End quote ---
Nope. Try pulling the strip from a broken one, if you ever have the chance. The metal pattern is uniform along the whole thing, no variation whatsoever.
--- End quote ---
https://shop.mitutoyo.eu/web/mitutoyo/en/mitutoyo/01.03.05a/Digital%20ABS%20AOS%20Caliper/$catalogue/mitutoyoData/PR/500-203-30/index.xhtml
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