Robotic Car - How to read Gyro Datasheets (Part 1)

Have you ever been lost trying to understand the information in a gyro datasheet? This video should help! In this first part I go through the mechanical characteristics of a MEMS gyro and explain how each of the parameters affect your choice of gyro and its implementation.

Errata:

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[afoose]

Man your videos are dope. Super practical. Way better than how they taught at my school

[BrianBDouglas]

I got caught up in the excitement and left it off! It should be there now.

[canturkguclu]

You are much better than all my teachers at university. Thank you so much for this video

[engineered.mechanized]

Six years later, your videos are still great.

[ArthurYCLiu]

Hey Brian, you are not an excellent engineer but also a fantastic video maker!

[wipebolb]

Your videos are the perfect supplement to automation and control studies :D Love them.. Keep it up, you are doing a great job.

[nahuel]

6:56 I am a little bit confused. The datasheet says that LSB sensitivity =0.00875 @ 250 °/s
but I calculated that the LSB sensitivity was 250 / 2^15 = 0.0076 °/s
What am I doing wrong?

[AhmedSamir-ovyi]

Thank you for sharing your deep understanding of the control system subject.
I am looking for a process control loop real life example. Consider a liquid flow control loop consisting of pump, control valve, flow sensor and controller. How can I deduce the loop transfer function from actual datasheets of pump, control valve and sensor. Then determine the correct tunning parameters of controller

[johnbrewer]

Great video and nice T-shirt. Doing some MEMS modeling, which is a bit different than the optical and/or mechanical gyros I've used in the past. These videos are an excellent resource!

[BrianBDouglas]

Aww, it's a units issue. In Crossbow they state PSD and FFT in degrees per hour, in my video I use degrees per second since that is what is in the datasheet. So the difference is a factor of 3600 sec/hr. Hope that helps!

[jonask]

Hey Brian, thank you for the great videos!

Btw. at 9:49 you accidently wrote 100 counts, but i think you wanted to write about 1000 counts like you said it... no big deal

Many greetings from Germany!

[francoistuttobene]

Hi Brian, but is the FFT to ARW formula right? Should it be 1/60 as reported into crossbow doc?

[yucel]

sen nasıl bir kralsın yaa " such a king"

[steveom]

Why is the sensitivity not equal to the measurement range divided by 32767 (15 bits)?

[usasikh]

would love to hear your opinion or videos related modern control theory 

[AmarNath-bfbu]

Hi brother, could you please help to calculate threshold and resolution of gyroscope from datasheet

[vunamnguyen]

If my gyroscope is sensitive enough to measure the angular velocity of the Earth, How should I do to remove it from my measurements? Thank you!

[mnada]

Rotating in Inertial space ? Is it possible to have a gyro that detect the rotation of the earth ?

[_RamjiG]

Hey I am using MPU6050 Gyro sensor(it's 3 Axis). Initially the values are x= -0.18 y=0.01 z=0.00 and after rotation to 90 degree there is change in values for a moment and then it settles down for the same initial values of x, y, z before rotation. Why does this happen? and i want to convert these values into degrees. can you help me out please?

[panicker]

Hi Nice video can you upload for lsm303d accelerometer as well ?