Key Words
IMU (Inertial Measurement Unit)
This is an electronic device that measures and reports a body's specific force, angular rate, and sometimes the orientation of the body, using a combination of accelerometers, gyroscopes and sometimes magnetometers.
Used to maneuver aircraft, UAVs, spacecraft, satellites etc.
I2C or I2C (Inter Integrated Circuit Protocol)
SPI (Serial Peripheral Interface)
Both are usually compatible with most IMUs but should cross check which one is preferred.
We only want accelerometer and gyroscope and that can be connected to Rasberry Pi. Some IMUS come with a magnetometer which helps to give more accurate orientation measurements
In terms of current needs and longevity an industrial or tactical IMU may be preferred
IMU Name | Size | Performance | Communication | Price per unit | Physical | Electrical | Datasheet | Additional Links |
WYHP 9DOF |
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UNIK GY-85 |
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Waveshare 10 DOF |
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X-Y-G |
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10 DOF Mems |
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DIYmall 9 axis |
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Pololu MiniIMU | 0.8" X 0.5" |
| I2C | 15.95 |
| Operate below 3.6 V Minimum of 4 pins |
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Pololu AltIMU-10 |
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Redshift Labs UM7-LT Orientation Sensor |
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Redshift Labs UM7 Orientation Sensor |
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LSM9DS1TR | (3.25 X 3 X 1.0 mm) | Measures acceleration, angular rate, magnetic field, temperature | I2C and SPI | 9.45 | Operating temp range of -40 to 85 C | Operating range of 1.9V to 3.6V | https://www.digikey.ca/htmldatasheets/production/1639232/0/0/1/lsm9ds1-datasheet.html |
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BMI090L | (3 X 4.5 X 0.95 mm) | Gyroscope, accelerometer | I2C and SPI | 19.74 |
| Operating range of 2.4V to 3.6V | https://media.digikey.com/pdf/Data%20Sheets/Bosch/BST-BMI090L-DS000-00.pdf |
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LSM9DS0 (BerryIMU) | (4 X $ X 1.0 mm) | Accelerometer, Gyroscope, Magnetic field, temperature sensor | I2C and SPI |
| Operating temp range of -40 to 85 C | Operating range of 2.4V to 3.6V | ||
BMX160 |
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| https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BMX160-DS000.pdf |
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ICM20948 |
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Ideally be reused but cost and size are bigger factors