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Open Source 8.5 Digit Voltmeter from CERN: Build and Test

Marco Reps · demo · Watch on YouTube

Electronics & circuit designEmbedded systems & DIY electronics

What it is

Marco Reps builds and tests an open-source 8.5 digit voltmeter based on CERN's high-precision ADC design. The video walks through assembly, soldering and measurement of the resulting instrument.

Why Hacker News recommends it

HN people point to it as a showcase of CERN's open hardware and as an example of quality metrology content.

  • 1 people recommended it
  • 1 different months
  • 1 strong recommendations
  • first 2021, last 2025

What HN commenters said

  1. “Marco Reps is a treasure.”

    Look at CERN's multimeter.

    willis936, 2025-10 · Strong recommendation · in “How bad can a $2.97 ADC be?”

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

Topics: voltmeter, cern, adc, open hardware, electronics

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