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Measure the mass of an eyelash with a DIY microbalance

Applied Science · demo · Watch on YouTube

Embedded systems & DIY electronicsElectronics & circuit design3D printing, CNC & maker projects

What it is

Ben Krasnow of Applied Science builds a DIY microbalance from an analog panel meter with an optical servo loop. It reaches about 5 micrograms of precision and is used to weigh a single eyelash at around 35 micrograms.

Why Hacker News recommends it

Pointed to as proof that you can weigh micrograms cheaply at home, and as a clear breakdown of how such a scale works.

  • 1 people recommended it
  • 1 different months
  • 0 strong recommendations
  • first 2018, last 2026

What HN commenters said

  1. “YouTube just dug up a a real nice breakdown that Ben Krasnow did”

    Real nice breakdown of a DIY microbalance by Ben Krasnow.

    jcims, 2018-12 · Recommendation · in “Making Penicillin at Home”

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

Topics: precision measurement, servo loop, lab equipment, diy, analog meter

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