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Inside a cheap set of eBay digital calipers

bigclivedotcom · demo · Watch on YouTube

Repair, teardowns & right to repairElectronics & circuit design

What it is

Big Clive tears down a cheap eBay digital caliper, explaining its capacitive linear encoder and measuring its quiescent current. He finds it surprisingly accurate and repeatable for its price.

Why Hacker News recommends it

Cited in caliper threads as a teardown showing how cheap digital calipers work and that they are better than expected.

  • 1 people recommended it
  • 1 different months
  • 0 strong recommendations
  • first 2021, last 2024

What HN commenters said

  1. “It's a fascinating device.”

    Explores how an inexpensive caliper senses position with PCBs.

    djmips, 2022-09 · Recommendation · in “Precision DIY calipers? That’s a moiré”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: digital calipers, capacitive encoder, big clive, teardown, measurement

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