RESEARCH: Triple Axis Compass Magnetometer Sensor (GY-271 & GY-273; MPU-6050)

The Compass Module is designed for low-field magnetic sensing with a digital interface and perfect to give precise heading information. This compact sensor fits into small projects such as UAVs and robot navigation systems. The sensor converts any magnetic field to a differential voltage output on 3 axes. This voltage shift is the raw digital output value, which can then be used to calculate headings or sense magnetic fields coming from different directions.

• http://wiki.sunfounder.cc/index.php?title=GY-271_HMC5883L_3-Axis_Magnetic_Electronic_Compass_Module

What is the difference between GY-271 & GY-273?

• The reference voltage on the GY-273 is internal 3.3v & GY-271 is Vcc. (The linked posting below is recommending GY-271 a better option of an Arduino Uno or Nano.

• GY-271 diagram - http://www.robotpark.com/image/data/PRO/91457/GY_271_ELECTRONIC_COMPASS.pdf

• GY273 diagram - https://c1.staticflickr.com/9/8120/29584973591_7061f235b7_o.jpg

• Original posting - https://forum.arduino.cc/index.php?topic=492733.0#:~:text=Both%20include%20pullup%20resistors%20on,pullup%20resistors%20are%204k7%20Ohms.

Other components

• https://www.adafruit.com/product/4479?gclid=Cj0KCQjwo6D4BRDgARIsAA6uN183ZgxqV_s7JpN3lw81CFU9cFyeFrSJ3ARAjgY7RRGk4dSsJW6eWOMaAqoxEALw_wcB

• https://www.newark.com/dfrobot/dfr0033/digital-magnetic-sensor/dp/79AC5518?gclid=Cj0KCQjwo6D4BRDgARIsAA6uN19DAce3EVHZZkNaFykVzmbuqsXMrqkyWvaLpkHMUkX4RwD8HCXPzCIaAtfIEALw_wcB&mckv=sJ75O62WU_dc|pcrid|434136793563|plid||kword||match||slid||product|79AC5518|pgrid|100464451626|ptaid|pla-903729965890|&CMP=KNC-GUSA-GEN-Shopping-NewStructure-Embedded-Computers-Education-MakerBoards

• https://vetco.net/products/mpu-6050-gy-521-3-axis-accelerometer-and-gyro-for-arduino?gclid=CjwKCAjwmf_4BRABEiwAGhDfSaECKiBi6I0dXEUllaLDip0FK5pAliCsrBwCNJr3CFXAbpMPeTYxCBoCrmYQAvD_BwE

Use Cases

• https://www.arduino.cc/en/Tutorial/RobotCompass