Big Clive Tears Down an Ultra-Cheap Pair of Digital Calipers
In this BigCliveDotCom video, Clive “takes to bits” a set of digital calipers he bought on eBay for £5 (about US$7). For that ridiculously low price, he finds a decently-accurate measuring tool that would be an asset for general, non-machinist, shop use.
Inside he finds impressive use of cheap, use-optimized components:
The linear capacitive encoder in these units is very impressive. The physical encoder is seemingly very simple, with the bulk of the work being done by the ASIC (Application Specific Integrated Circuit). It’s very similar in its cost optimisation to the cheap, but super-accurate weighing scales.
Even in this dirt-cheap model, he finds the pads for a data port and two mystery button pads that may be for things like data-hold in more expensive models on the line.
Eink, E-paper, Think Ink – Collin shares six segments pondering the unusual low-power display technology that somehow still seems a bit sci-fi – http://adafruit.com/thinkink
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