High Pecision 3D Electronic Compass Sensors

STA-HD807 miniature 3D electronic compass integrates a 3-axis magnetic sensor, 3-axis accelerometer, and microprocessor. It features built-in algorithms for calculating heading, pitch, and roll angles, and supports compensation and correction for both hard and soft magnetic interferences, delivering high-precision attitude measurement.

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Product Description

It provides users with three-dimensional angular data, including heading, pitch, and roll. This module is widely applied in aviation, marine navigation, drilling survey, military, and other fields that demand high-performance orientation and navigation.

Product Features

★High Accuracy
Yaw Accuracy: 0.3°RMS (pitch≤40°).
Pitch/Roll Angle Accuracy: 0.3°RMS (tilt<80°).
★Compact Size：Bare board - 20mm×10mm×8mm (PCB thickness: 1.6 mm)
★User-friendly Soft/Hard Magnetic Calibration: Features soft/hard magnetic calibration capabilities

Product Applications

●Marine Navigation & Surveying
●GPS Integrated Navigation
●Infrared Imagers
●Laser Rangefinders
●Oceanographic Survey Instruments
●Unmanned Aerial Vehicles
●Handheld Telescopes

Performance Parameters

Parameter				Specification
Yaw Angle	Measurement Range			0°~359.9°
	Accuracy	Planar Calibration（\|Pitch\|≤10°）		＜0.3°(RMS)
		3D Calibration（\|Roll\|≤40°）		＜0.5°(RMS)
	Resolution			0.01°
	Repeatability			0.1°(RMS)
Tilt Angle	Measurement Range	Pitch		-90°～90°
		Roll		-180°～180°
	Accuracy	Pitch	\|Pitch\|≤80°	＜0.3°(RMS)
		Roll	\|Roll\|≤80°	＜0.3°(RMS)
	Resolution			0.01°
	Repeatability			0.1°(RMS)
Data Update Rate	≤10Hz

Electrical Performance & Mechanical Dimensions

Parameter	Specification
Supply Voltage	DC 5V~9V（Typical: 5V）
Operating Current	26mA
Communication Interface	TTL
Baud Rate	300~115200（Default: 115200）
Operating Temperature	-20℃~60℃
Storage Temperature	-55℃~80℃
Dimensions	22mm×10mm×8mm
Weight	1.1g
Connector	Cable Leads

Outline Dimensions & Interface Definitions

Pin No.	Name	Color	Description
1	VCC	（Red）	Power Supply Positive
2	GND	（Black）	Power Supply Negative (Ground)
3	RXD	（Blue/Yellow）	Serial Communication Receive (Rx), Serial Communication Transmit (Tx) +3.3V TTL Level, Default Baud Rate 115200
4	TXD	（Green）

Compass Installation Environmental Requirements & Recommendations

a) Before using the compass, it is recommended to perform magnetic field calibration to improve heading measurement accuracy. If the magnetic environment changes or measurement accuracy becomes unsatisfactory, recalibrate the compass promptly. b) For optimal heading accuracy, install the compass on a platform as far away from magnetic interference as possible. Although the STA-HD-807 can calibrate for soft and hard magnetic interference present on the platform, greater interference will result in poorer post-calibration heading accuracy.

c) Avoid installing the compass on platforms or in environments with alternating magnetic interference. The compass can only effectively correct for static soft and hard magnetic interference, not alternating magnetic interference. Therefore, choose an installation location as far away as possible from sources of alternating magnetic fields, such as motors, engines, AC power lines, transformers, and various electromagnetic switches.

d) The compass cannot perform precise measurements on platforms experiencing vibration, shaking, or non-stationary motion.