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Topic: Using high-precision accelerometers (Read 223 times) previous topic - next topic

jo1612

Hello everyone,

I would like to read out data from industrial high-precision accelerometers which should measure a microgravity quality of 10^-5 g. Is it possible to read out the data with an Arduino Uno? I know that the smallest signal an Arduino can measure is about 5mV which is probably not precise enough. Is it possible to use the I2C and connect 4 accelerometers to it for redundancy reasons?

I am happy for any help. Thank you!

AWOL

If the devices are I2C, what does it matter about analogue resolution?

Yes, you can attach multiple I2C devices, just make sure they have different addresses
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.
I speak for myself, not Arduino.

jo1612

Okay perfect! I guess I will have a problem with finding precise enough accelerometers with I2C. Most often they come with a standard coaxial cables or special low noise cables

AWOL

Any accelerometer that comes with special cables is going to cost way more than an Arduino - I don't understand why you're trying to cut corners.
It's a bit like buying a high end amplifier and listening to it through cheap piezo speakers.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.
I speak for myself, not Arduino.

emirror6

Have you looked at the LSM303 which is a magnetometer and triple-axis accelerometer ?

AWOL

Have you looked at the LSM303 which is a magnetometer and triple-axis accelerometer ?
...but doesn't get anywhere near 10-5g sensitivity
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.
I speak for myself, not Arduino.

jo1612

Thanks for the comments. I contacted a few companies to ask for an industry solution because, as you said, there is no way to get this precision with a COTS system

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