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David writes – “This site provides step-by-step instructions on modifying a Civil Defense CD V-700 Geiger counter into a unit with digital readout compatible with Geiger tubes and scintillation probes.”Link.


  • Geiger counter (analog) CPU meter – Link.
  • Tablet PC Geiger counter – Link.
  • Geiger Countering on planes – Link.
  • The GeigerPod – Link.

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.

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