{"id":53543,"date":"2017-04-15T13:17:11","date_gmt":"2017-04-15T12:17:11","guid":{"rendered":"https:\/\/www.microplanet.ma\/?post_type=product&#038;p=53543"},"modified":"2026-10-19T19:21:29","modified_gmt":"2026-10-19T19:21:29","slug":"gy-273-3-axis-compass-magnetometer-module","status":"publish","type":"product","link":"https:\/\/www.microplanet.ma\/en\/produit\/gy-273-3-axis-compass-magnetometer-module\/","title":{"rendered":"GY-273 3-Axis Compass Magnetometer Module"},"content":{"rendered":"<h3>GY-273 3-Axis Compass Magnetometer Module<\/h3>\n<p>This compact board measures magnetic-field components along three axes and provides digital readings over I\u00b2C. It is listed as a GY-273\/HMC5883L module. Boards sold under the GY-273 or GY-271 name may instead contain a QMC5883L or another compatible-looking sensor, so identify the actual chip before selecting a driver or relying on a particular specification.<\/p>\n<h4>\ud83d\udd27 Listed and chip-reference specifications<\/h4>\n<ul>\n<li>Sensor: three-axis digital magnetometer; verify the exact IC marking (HMC5883L, QMC5883L or other)<\/li>\n<li>Interface: I\u00b2C; the listing states up to 400 kHz, subject to the sensor, board and host configuration<\/li>\n<li>Magnetic-field range stated in the listing: up to \u00b18 gauss; available ranges and resolution depend on the actual chip and configuration<\/li>\n<li>Maximum output rate stated in the listing: 160 Hz; the actual supported rate depends on the sensor variant and settings<\/li>\n<li>Board dimensions stated in the listing: approximately 18 \u00d7 17 mm<\/li>\n<li>Operating-temperature range stated in the listing: \u221230 \u00b0C to +85 \u00b0C; confirm against the exact sensor and assembled board specifications<\/li>\n<li>The French listing\u2019s 2.7\u20136.5 V figure is not the sensor\u2019s differential output voltage. The sensor supplies digital I\u00b2C measurements. Chip supply and I\/O limits are much lower; some carrier boards add regulation or level shifting, while others do not. Check the exact board documentation and never assume it accepts 5 V.<\/li>\n<li>The listing claims 1\u20132\u00b0 compass accuracy. This is not guaranteed for an uncalibrated board: heading accuracy depends on hard\/soft-iron calibration, tilt compensation, mounting, nearby magnetic materials and the exact sensor.<\/li>\n<\/ul>\n<h4>\ud83e\udded Using it as a compass<\/h4>\n<p>Read the raw X, Y and Z magnetic-field values over I\u00b2C, then apply calibration and heading calculations in the host software. For a useful compass heading, calibrate the complete mounted device to compensate for nearby motors, magnets, steel, wiring and other sources of magnetic distortion. Tilt compensation also requires a suitable orientation reference, commonly an accelerometer. Apply local magnetic declination if converting magnetic north to geographic north.<\/p>\n<h4>\u2699\ufe0f Wiring and compatibility<\/h4>\n<p>Connect the board to the host\u2019s I\u00b2C clock and data lines, ground and the documented supply input. Confirm the board\u2019s I\u00b2C address, chip identity, supply range and pull-up voltage. If the board does not include level shifting, keep SDA\/SCL within the sensor\u2019s logic limits and use a level shifter with a 5 V host where needed.<\/p>\n<p>The listing links to both HMC5883L and QMC5883L documentation\/software. These chips are not interchangeable in every detail: registers, I\u00b2C addresses, drivers and measurement behavior may differ. Check the chip marking and test the I\u00b2C response before choosing a library.<\/p>\n<h4>\ud83d\udca1 Typical uses<\/h4>\n<ul>\n<li>Magnetic-field measurement and educational experiments<\/li>\n<li>Compass-heading prototypes after calibration<\/li>\n<li>Robotics and navigation experiments when combined with suitable motion\/orientation sensors<\/li>\n<\/ul>\n<p>This module is for development and measurement experiments, not a certified navigation or safety instrument.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>GY-273 three-axis digital magnetic-field sensor board listed as HMC5883L. Some boards sold under this name use a different chip such as QMC5883L; check the actual IC and board voltage\/logic levels before wiring. I\u00b2C output requires calibration for compass use.<\/p>\n","protected":false},"featured_media":53544,"template":"","meta":[],"product_brand":[],"product_cat":[314,316],"product_tag":[],"class_list":["post-53543","product","type-product","status-publish","has-post-thumbnail","product_cat-developpement-en","product_cat-modules-capteurs-en","first","instock","sale","taxable","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>GY-273 3-Axis Compass Magnetometer Module | MicroPlanet<\/title>\n<meta name=\"description\" content=\"GY-273 three-axis digital magnetometer\/compass board with I\u00b2C interface. 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