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I²C sensor breakout

MCU → I²C sensor module — VCC, GND, SDA, SCL, four-wire harness with colour-coded conductors.

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connectors:
  MCU:
    type: Header
    pinlabels: [3V3, GND, SDA, SCL]
  SENSOR:
    type: JST-SH 4-pin
    pinlabels: [VCC, GND, SDA, SCL]

cables:
  W1:
    wirecount: 4
    length: 0.15
    colors: [RD, BK, BL, YE]

connections:
  -
    - MCU: [1-4]
    - W1: [1-4]
    - SENSOR: [1-4]