Voting resources, early voting, and poll worker information - VOTE. ... Adafruit is open and shipping.
0

Orientation sensor help
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Orientation sensor help

by bironpe on Tue Sep 15, 2020 9:07 pm

Dear Adafruit Tech Support,

I am working on a project idea from 8th grade students with solid knowledge of Arduino.
They wish to develop a helmet controlled flashlight.

The small LED light would be mounted on a mini pan/tilt connected to an arduino mega.
Orientation would be controlled using the "Adafruit 9-DOF Absolute Orientation IMU Fusion Breakout - BNO055 - STEMMA QT / Qwiic
PRODUCT ID: 4646" or the "Adafruit 9-DOF Absolute Orientation IMU Fusion Breakout - BNO055
PRODUCT ID: 2472".
The first step is controlling the light set on a table ( AKA moving the rabbit).
The second step would be mounting this on a moving vehicle using one sensor to detect the light's direction and one to determine user-controlled deirection and then matching the two.
Long story short this is an Apache helmet controlled gun turret...

1) Which sensor between the two mentioned above would be best suited for this project?
2) Is the Adafruit 9-DOF Absolute Orientation PRODUCT ID: 2472 much more accurate then the cheaper one?


Thank you for your time and consideration,

Pascal Biron

bironpe
 
Posts: 5
Joined: Sat Mar 23, 2019 4:41 am

Re: Orientation sensor help

by adafruit_support_bill on Wed Sep 16, 2020 5:41 am

These are both based on the same BNO055 IMU chip and have equivalent performance specs.

adafruit_support_bill
 
Posts: 78653
Joined: Sat Feb 07, 2009 10:11 am

Re: Orientation sensor help

by vitlachbach on Thu Sep 17, 2020 6:00 am

I have purchased some BNO055 adafruit board (https://cdn-learn.adafruit.com/download ... sensor.pdf), I have one question: Can I use this board with Vin = 2.5V ?

vitlachbach
 
Posts: 3
Joined: Thu Sep 17, 2020 5:52 am

Re: Orientation sensor help

by adafruit_support_bill on Thu Sep 17, 2020 7:05 am

The chip is rated to function at 2.5v. You will need to be sure that the microprocessor you connect to it will recognize 2.5v level signals.

adafruit_support_bill
 
Posts: 78653
Joined: Sat Feb 07, 2009 10:11 am

Re: Orientation sensor help

by vitlachbach on Thu Sep 17, 2020 7:26 am

adafruit_support_bill wrote:The chip is rated to function at 2.5v. You will need to be sure that the microprocessor you connect to it will recognize 2.5v level signals.

I understand that the BNO055 can work with 2.5V but I concern this BNO055 module from Adafruit: https://learn.adafruit.com/adafruit-bno ... ion-sensor. Can I use the 2.5V power supply for this module?

vitlachbach
 
Posts: 3
Joined: Thu Sep 17, 2020 5:52 am

Re: Orientation sensor help

by adafruit_support_bill on Thu Sep 17, 2020 7:32 am

We have not tested it at 2.5v. But if you connect a regulated 2.5v source to the 3.3v pin on the board, it will bypass the 3.3v regulator and supply 2.5v direct to the VDD and VDDIO pins of the chip.

adafruit_support_bill
 
Posts: 78653
Joined: Sat Feb 07, 2009 10:11 am

Re: Orientation sensor help

by vitlachbach on Thu Sep 17, 2020 12:42 pm

adafruit_support_bill wrote:We have not tested it at 2.5v. But if you connect a regulated 2.5v source to the 3.3v pin on the board, it will bypass the 3.3v regulator and supply 2.5v direct to the VDD and VDDIO pins of the chip.

Thanks for your support.

vitlachbach
 
Posts: 3
Joined: Thu Sep 17, 2020 5:52 am

Please be positive and constructive with your questions and comments.