DIMU vs AIMU

Info & Discussions about good ole AQ6, taken to the next level.

DIMU vs AIMU

Postby chestnut » Fri Mar 28, 2014 5:04 am

Hi all,

I'm using DIMU, and I haven't yet used AIMU, so I thinks AIMU is best if we use AIMU + MS5611(baro digital).
Anyone can help me clearly understand different DIMU and AIMU?

Thanks all.
chestnut
 
Posts: 71
Joined: Wed Oct 23, 2013 3:45 am
Location: VietNam

Re: DIMU vs AIMU

Postby bn999 » Fri Mar 28, 2014 2:59 pm

The difference is simply the sensors that are being used. They are of a new / better design in each case. In the case of the GYO & ACC, they are in the same chip die which makes calibration easier. The X, Y & Z axis of the MAGs are also on a single chip die as well.
bn999
 
Posts: 1559
Joined: Thu Jun 21, 2012 11:40 pm

Re: DIMU vs AIMU

Postby chestnut » Fri Mar 28, 2014 4:56 pm

bn999 wrote:The difference is simply the sensors that are being used. They are of a new / better design in each case. In the case of the GYO & ACC, they are in the same chip die which makes calibration easier. The X, Y & Z axis of the MAGs are also on a single chip die as well.


Why do you choose MPU6000? is it cheap?
I think Analog Device have a lot of good MEMS sensors, why don't you choose them?
chestnut
 
Posts: 71
Joined: Wed Oct 23, 2013 3:45 am
Location: VietNam

Re: DIMU vs AIMU

Postby bn999 » Fri Mar 28, 2014 5:13 pm

I reviewed and tested just about every sensor I could get my hands on. Some AD parts were tested, but did not make the cut. What I ended up with were the best in the low priced MEMs class at the time. There are better sensors, but they cost $100's and are 10 times the size and weight and would require 3D mounting. I was skeptical of the MPU6000 at first, but it ended up performing the best under the conditions that we typically experience during flight. The HMC5983 is by far the best MAG that I have tried and is compact and easy to interface to. The MS5611 is not cheap, but it is much better than the analog part that we have been using.
bn999
 
Posts: 1559
Joined: Thu Jun 21, 2012 11:40 pm

Re: DIMU vs AIMU

Postby chestnut » Fri Mar 28, 2014 5:19 pm

bn999 wrote:I reviewed and tested just about every sensor I could get my hands on. Some AD parts were tested, but did not make the cut. What I ended up with were the best in the low priced MEMs class at the time. There are better sensors, but they cost $100's and are 10 times the size and weight and would require 3D mounting. I was skeptical of the MPU6000 at first, but it ended up performing the best under the conditions that we typically experience during flight. The HMC5983 is by far the best MAG that I have tried and is compact and easy to interface to. The MS5611 is not cheap, but it is much better than the analog part that we have been using.


Thanks Bill,

Can you suggest some the best sensors? I want to try it so much... :roll:
chestnut
 
Posts: 71
Joined: Wed Oct 23, 2013 3:45 am
Location: VietNam

Re: DIMU vs AIMU

Postby bn999 » Fri Mar 28, 2014 7:35 pm

I've tried these and they are amazing, but so is the price and size.

http://www.colibrys.com/e/page/300/
bn999
 
Posts: 1559
Joined: Thu Jun 21, 2012 11:40 pm

Re: DIMU vs AIMU

Postby chestnut » Sat Mar 29, 2014 5:32 am

bn999 wrote:I've tried these and they are amazing, but so is the price and size.

http://www.colibrys.com/e/page/300/


Woa, They are amazing Accelerometer for AHRS application, I will buy and test them, after that report it. Thanks Bill.
chestnut
 
Posts: 71
Joined: Wed Oct 23, 2013 3:45 am
Location: VietNam

Re: DIMU vs AIMU

Postby Trnquill » Sun Apr 06, 2014 12:45 pm

Do you need to use foam with DIMU to protect the pressure sensor like you do with AIMU? If so, which one of the chips is the pressure sensor? Under the DIMU perhaps?
Trnquill
 
Posts: 158
Joined: Thu Jun 06, 2013 9:35 am

Re: DIMU vs AIMU

Postby joebar.rc » Sun Apr 06, 2014 1:46 pm

Trnquill wrote:Do you need to use foam with DIMU to protect the pressure sensor like you do with AIMU? If so, which one of the chips is the pressure sensor? Under the DIMU perhaps?


Yes, that very small metal 'chip' with a tiny hole in it is the baro. Because some air flow can always come there, I place a very small piece of foam between the AQ and the baro on the dimu
joebar.rc
 
Posts: 1084
Joined: Fri Jun 22, 2012 8:59 am
Location: The netherlands

Re: DIMU vs AIMU

Postby kinderkram » Sun Apr 06, 2014 5:03 pm

It´s the one marked "U1" on the lower side:

Image
kinderkram
 
Posts: 2911
Joined: Fri Jun 22, 2012 7:47 am

Next

Return to AQ6 +DIMU +CAN

Who is online

Users browsing this forum: No registered users and 4 guests

cron