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Sensor Forum Primer for choosing the right accelerometer and gyroscope
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Primer for choosing the right accelerometer and gyroscope

Former Member
Former Member over 11 years ago

Greetings!

 

I am starting in this wonderful world called electronics, and as all the newbie, I have many questions, which I hope I will be able to answer trough this board.

 

I am starting a project that will involve various sensors, to measure the movements of the human body. So the choice of sensor fell on gyro and accelerometers. Mainly because I need to register the position in space, and translate it in a 3d environment. I will put them on something like a suit or other wearable items, so it should be easy to solder on the sensor.

 

The problem is: I have no idea where to start. I know how they works in general; I know that there are analog and digital version, and that they have different voltage to operate, and different sensitivity, but that's all that I know, and there are a ton of options.

 

I need basically a primer that would tell me, which "model" is used to a specific scope or use; so I can pick the ones that fits my needs. I am working with the human body, so I don't need anything fancy; the movements are mostly limited to hands or arms movements.

 

The choice among the ones with the specs that I consider right, are still a lot; and also the price is something that may vary wildly, so I hope that someone could shed some light about where to start.

 

I assume that there are various models, made by different companies, altho I fail to see the difference since the specs seems the same (same G, same voltage, same axis). Even the ones sold on Newark vary quite a lot.

 

Any suggestion is more than welcome; so I can avoid wasting money and time, on something that is not fitting my needs; and also avoid to waste money on something that is way beyond my scope (more is better, altho it is not my philosophy...I believe in the right tool for the right job).

 

Thanks in advance!

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Top Replies

  • dougw
    dougw over 11 years ago +1 suggested
    Hi, Cataloging all possible applications and determining the best sensor for each is a truly massive job and the whole table would need to be updated every week as new sensors are continuously being developed…
  • babusingh9211
    babusingh9211 over 11 years ago in reply to Former Member +1
    As far as my concern ADXL335 doesn't Support I2C communication. It has analog output which is to be converted using ADC. So be careful about this. And ADXL345 has I2C support. Sumit Rai
  • mmohit00007
    mmohit00007 over 11 years ago in reply to babusingh9211 +1
    yeh thats right ADXL345 has Digital output.
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  • kas.lewis
    0 kas.lewis over 11 years ago

    If you look at this post I describe how I chose the sensors I did. I broke it down to what ranges of sensing I needed and what I was comfortable with both in manufacturer and communication protocol. They may all seem the same but some have their own tricks. SPI is simpler then I2C for beginners, ST has an interesting command format Analog Devices has their own quirks. Don't spend too long choosing your sensors, once you have something that will work try make it work.

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  • kas.lewis
    0 kas.lewis over 11 years ago

    If you look at this post I describe how I chose the sensors I did. I broke it down to what ranges of sensing I needed and what I was comfortable with both in manufacturer and communication protocol. They may all seem the same but some have their own tricks. SPI is simpler then I2C for beginners, ST has an interesting command format Analog Devices has their own quirks. Don't spend too long choosing your sensors, once you have something that will work try make it work.

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