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#1 Contender 🥳 : SenseHat

For more info: https://pinout.xyz/pinout/sense_hat

General Requirements/Preferences

Requirements

Preferences

<$100 for a single module / <$10 for a component

Chassis mount over surface mount because surface mount would require its own custom PCB

Accelerometer and Gyroscope

Magnetometer

Compatible with Rasberry Pi

USB (with Pi)/ I2C/ SPI

For Pi module - Input voltage of 5V

Other - Input voltage of 12V or 3V3 (notation for 3.3V)

Reusable

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.

For more detailed reading: https://www.vectornav.com/resources/what-is-an-imu

Rasberry Pi

Tiny computer

Rugged

This could mean protection from harsh environments like moisture, extreme temperatures, mechanical shock and vibration etc

Surface Mount

Anything that sits on top of the PCB at a specific place

Chassis Mount

Has a connector to the module and can sit wherever.

LGA (Land Grid Array)

Type of surface mount packaging for integrated circuits

Common Communication Protocols

  • I2C or I2C (Inter Integrated Circuit Protocol)

  • SPI (Serial Peripheral Interface)

  • CAN (Controller Area Network)

  • UART (Universal Asynchronous Receiver/Transmitter

Ongoing Research and Questions

  • What’s our budget??

  • Research on Kalman filtering algorithms (appears in most industrial grade IMUs from research so far)

  • Max size of circuit

  • Need for “ruggedness”

  • Find out what “ruggedness” means

  • How does packaging factor into requirements

  • Surface vs Chassis Mount

  • Necessary grades/standards of IMU

IMU Name

Size

Performance

Communication

Price per unit

Packaging

Physical

Electrical

Datasheet

Additional Links

Rasberry Pi Sense Hat

Accelerometer, Gyroscope, Pressure, Humidity, Temperatire

$39.95

https://www.buyapi.ca/product/raspberry-pi-sense-hat-with-orientation-pressure-humidity-and-temperature-sensors/?src=raspberrypi

Hat

Get these values!!

Pi should take under 1-2 A

Check for this again!!

https://www.mathworks.com/help/supportpkg/raspberrypiio/ref/working-with-raspberry-pi-sense-hat.html

https://www.raspberrypi.org/documentation/hardware/sense-hat/

OpenIMU300ZI

 (24 mm X 37mm)

 Accelerometer, Gyro, Magnetometer

 SPI and UART, USB i think

 $231.34

(free shipping)

 Operating temp range of -40 to 85 C

 Operating range of 3.0 V to 5.5 V

 https://www.aceinna.com/inertial-systems/OpenIMU300ZI

 Must use proprietary software to code. (it’s FREE)

Can simulate IMU with OpenIMU

VN-100

Rugged- (45 mm X 44 mm)

SMD - (24 mm X 22mm)

Accelerometer, Gyro, Compass, Barometer

Surface Mount or Rugged (plug and play)

-40 to 85 C

3.2 to 5.5V or to 14V for rugged

Outputs real time drift free attitude solution

LSM9DS0 (BerryIMU)

(4 X 4 X 1.0 mm)

Accelerometer, Gyroscope, Magnetic field, temperature sensor

I2C and SPI

 

LGA

Operating temp range of -40 to 85 C

Operating range of 2.4V to 3.6V

https://ozzmaker.com/wp-content/uploads/2014/12/LSM9DS0.pdf

https://ozzmaker.com/berryimu/

LSM9DS1

(3.5 X 3 X 1.0 mm)

Accelerometer, Magnetometer, Gyroscope, Temperature sensor

I2C and SPI

LGA

Operating temp range of -40 to 85 C

Operating range of

https://www.st.com/content/ccc/resource/technical/document/datasheet/1e/3f/2a/d6/25/eb/48/46/DM00103319.pdf/files/DM00103319.pdf/jcr:content/translations/en.DM00103319.pdf

OpenIMU330BI

(15 mm X 11 mm)

Accelerometer, Gyro

SPI and UART

$184.68 (free shipping)

Surface Mount

https://www.aceinna.com/inertial-systems/OpenIMU330B

Same as above

UNIK GY-85

 

 

 

 

 

 

 

 

Waveshare 10 DOF

 

 

 

 

 

 

 

 

X-Y-G

 

 

 

 

 

 

 

 

10 DOF Mems

 

 

 

 

 

 

 

 

DIYmall 9 axis

 

 

 

 

 

 

 

 

Pololu MiniIMU

0.8" X 0.5"

 

I2C

15.95

 

Operate below 3.6 V

Minimum of 4 pins

 

 

Pololu AltIMU-10

 

 

 

 

 

 

 

 

Redshift Labs UM7-LT Orientation Sensor

 

 

 

 

 

 

 

 

Redshift Labs UM7 Orientation Sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LSM9DS1TR

(3.25 X 3 X 1.0 mm)

Measures acceleration, angular rate, magnetic field, temperature

I2C and SPI

9.45

LGA

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

 

BMI090L

(3 X 4.5 X 0.95 mm)

Gyroscope, accelerometer

I2C and SPI

19.74

LGA

 

Operating range of 2.4V to 3.6V

https://media.digikey.com/pdf/Data%20Sheets/Bosch/BST-BMI090L-DS000-00.pdf

 

ICM20948

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MTi-6x0

 

 

 

 

Module

 

 

 

 (need more info )

FSM30x Datasheet

 

 

 

 

LGA i think

 

 

 

 

 

Code Examples (interfacing with Rasberry Pi)

…

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