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
F450 F550 / Q450 Q550 Replacement Arm Red (220mm) – Made in INDIA
X2 ELF 88MM Micro brushless racing kit
Raspberry Pi 4 Model-B with 4 GB RAM
Foxeer DalProp Cyclone Triblade T5139.5 Propeller 2 Pair CW+CCW-Metal Grey
Slamtec RPLiDAR A2M12 360 Degree Laser Scanner Kit – 12M Range
APM 2.8 Upgraded Flight Controller kit with GPS Module Combo Kit
F450 / Q450 Quadcopter Frame(PCB Version with Integrated PCB) + Plastic Landing Gear Combo Kit – Made in INDIA
5MP Raspberry Pi 3/4 Model B Camera Module Rev 1.3 with Cable 








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