Case study

Clockwise Calipers Data Interface: reconstructing the DTCR-02 cable

Clockwise Calipers Data Interface reconstructs the DTCR-02 data cable for Clockwise Tools DCLR-XX05 calipers. An Arduino reads the caliper's synchronous 24-bit measurements and presents them as USB keyboard input; the repository includes packet notes, firmware, KiCad designs and case models.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 1
Last commit: 2025-01-18
Language: C++
License (GitHub): GPL-3.0

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a demo observed; no download method found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: Clockwise Tools DCLR-XX05 calipers and an Arduino capable of USB keyboard emulation are needed; native USB support or an alternative such as HoodLoader2 can provide that capability.
Limits: The caliper data pins operate at 1.5 V and the README limits total current draw from them to about 0.3 mA.
Testing evidence: Android device compatibility is described as untested.
License: GPL-3.0 license.

Cite

BibTeX

@misc{clockwise-calipers-data-interface-case,
  title = {{Clockwise Calipers Data Interface: reconstructing the DTCR-02 cable}},
  howpublished = {\url{https://github.com/dthomas1202/clockwise-calipers-data-interface}},
  url = {https://github.com/dthomas1202/clockwise-calipers-data-interface},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/clockwise-calipers-data-interface-case/}}
}

Plain text

Clockwise Calipers Data Interface: reconstructing the DTCR-02 cable. https://github.com/dthomas1202/clockwise-calipers-data-interface (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/clockwise-calipers-data-interface-case/

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Primary sources

README.md GitHub · dthomas1202/clockwise-calipers-data-interface · Revision 7ac10a2