Gy-85 IMU
| Autor: | Syed Muhammad Abis Rizvi |
| Sprache: | DE EN |
Introduction
Overview:
The GY-85 is a compact 9-axis inertial measurement unit (IMU) which is the combination of three on board sensors.
1. Gyroscope — ITG3205
It measures angular velocity (rotation speed)
Axes: X, Y, Z
Result : °/second
2. Accelerometer — ADXL345
It measures tilt and acceleration.
Axes: X,Y,Z
Able to identify:
movement due to gravity (tilt)
Beneficial for: motion detection and balance
3. Magnetometer — (HMC5883L / IST8310 variant) It determines the magnetic field of Earth
provides a heading for the compass (North)
Interference-sensitive
Chips:
ITG3205 (3-axis gyroscope) ADXL345 (3-axis accelerometer) HMC5883L (3-axis digital compass) - IST8310 from 01.03.2020
Technical data:
IIC communication protocol Built-in regulator and logic converter to support 3.3V/5.0V microcontrollers I2C Digital Interface Module size: 22mm * 16.8mm Mounting hole 3mm 2.54 mm standard pin interface, convenient bread plate experiment connection Scope of delivery:
1x GY-85 (ITG3205 ADXL345 HMC5883L/IST8310) Nine Axis Modules 2x Pin Header
Working principle
Technical Overview
| Feature | Specification |
|---|---|
| Hersteller | Goouu |
| NEO-6M-0-001 | |
| Spannungsversorgung |
VCC 3-5 V |
| Stromaufnahme |
30-50 mA |
| Temperaturbereich |
-40 bis +85 °C |
| Empfohlene Baudrate |
Default 9600 Baud (variabel 4800 … 230400) |
| GNSS-System | GPS (L1-Band, 1575,42 MHz) |
| Positionsgenauigkeit | typ. 2,5 m CEP unter freiem Himmel |
| Geschwindigkeitsgenauigkeit | 0,1 m/s |
| Zeitgenauigkeit | ca. ±30 ns |
| Time to First Fix (TTFF) |
|
Pin Assignment
| Pin | GY-85 | Signal | Arduino Uno R3 |
|---|---|---|---|
| 1 | S: Signal | Analogsignal (0.3 V .. 5 V) | VCC 5 V |
| 2 | +: Versorgungsspannung VCC | 5 V | |
| 3 | -: Masse (GND) | 0 V |
Measurement method
Measuring Circuit
Software
Arduino IDE
Demo: DEMO GY-85.zip
Simulink
Measurement
Video
Datasheets
| # | Filename | Content |
|---|---|---|
| 1 | ADXL345.pdf | Analog Devices: Digital Accelerometer ADXL345, Datasheet, EN |
| 2 | IST8310 Datasheet v1.0.pdf | sentek: IST8310 3D Magnetometer, Datasheet, EN |
| 3 | ITG3205.pdf | sentek: IST8310 User Manual v1.5, EN |
| 4 | IST831020User20Manualv15Eng.1457496818.pdf | InvenSense: ITG-3205 3-axis MEMS gyro v1.0, Product Specification, EN |
| 5 | Shop Link | eckstein-shop.de |
Related Links
SVN-Repository
https://svn.hshl.de/svn/HSHL_Projekte/trunk/Arduino_Sensorsammlung