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GY-271 magnetometer module (HMC5883L-style)

Identifiers (from photo)​

  • Silkscreen: GY-271
  • Pins: VCC, GND, SCL, SDA, DRDY

What it is (typical)​

  • Commonly sold as HMC5883L (or compatible) 3-axis magnetometer breakout.

Interface​

  • I2C: SDA/SCL
  • Optional DRDY interrupt pin

Notes​

  • Exact chip variant can differ (some clones use QMC5883). We’ll confirm via I2C ID/register behavior.

Planned RAK3112 firmware block​

  • Gate: GateS_gy271_mag
  • Features:
    • I2C probe
    • read XYZ, compute heading (optional)
    • log raw + scaled values

Next info needed​

  • Link/listing if you have it (to know HMC vs QMC variant), otherwise we’ll detect in firmware.