The GY-271 is expected to feature an HMC5883L, but some boards actually contain a QMC5883L chip, which, although similar in capability, is not compatible with the HMC5883L. The GY-271 QMC5883L 3-axis Electronic Compass Module Magnetic Field Sensor is designed for low field magnetic sensing with a digital interface, making it ideal for providing precise heading information.
If you receive a GY-271 board and notice an I2C address of 0x0C but only read zeros from the board, it is likely that your board has a QMC5883L chip. In this case, try using the appropriate library for the QMC5883L. To install this library in your Arduino environment, download the latest release file to your desktop.
This compact sensor is well-suited for small projects such as UAVs and robot navigation systems. It converts magnetic fields into differential voltage outputs on three axes. This voltage shift is the raw digital output, which can then be used to calculate headings or detect magnetic fields from various directions.
Multirotor Controller
HMC5883L and QMC5883L module don’t have too much difference. HMC5883L is made by Honeywell. but because the production is about to be stopped, so we use a similar compass module-QMC5883L instead. QMC5883L is made by a Chinese company, they get the production authorization of HMC5883L from Honeywell, and rename it QMC5883L. So QMC5883L and HMC5883L basically are the same, they shares the same hardware design. Just their register is a bit different. We only need to change the software a bit.
Package Includes:
1 x GY-271 QMC5883L 3-axis Electronic Compass Module.
2 x 5 * 1 Male Burg Connectors
Koptan 50mm x 33m High Temperature Resistant Tape for 3D Printers
Eachine EV800 5 Inches 800×480 FPV Goggles
SmartElex RLS-06 Analog & Digital Line Sensor Array
HSKRC 3 Inch 140mm Carbon Fiber Racing Kit
Creality Ender-3 V2 Neo 3D Printer
2 pairs 2030 3 blades 2 inch Clear Propeller CW&CCW
Pure Carbon Fiber Magnetic Propeller Balancer Prop Essential For Quadcopter FPV Helicopter Airplane
ARF Quadcopter Advanced Combo Kit
Mark4 5 inch 225mm carbon fiber frame kit
ARF Quadcopter Upgraded Combo Kit
NEO-6M GPS Module with EPROM
Koptan 50mm High Temperature Resistance Tape for 3D Printers 








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