angle sensing

[rehtnap]

hi
im am so new to the pi so please forgive simple questions. so what i want to know is if there is and angle sensor unit that would sense 2 directions of angle that can work with the pi. what i want to do is have 2 or 3 sensors then be able to compare the readings relative to each other.

[Tarcas]

It might help us if you explain what you're trying to measure. I've never heard of an angle sensor, although depending on the application a flex meter may work. It measures how much the flexible sensor is bent.

[FLYFISH TECHNOLOGIES]

Hi,

if there is and angle sensor unit that would sense 2 directions of angle

Yes.
If the reference is vertical vestor (gravity), you can take accelerometer chips or inclinometer chips. If the reference is horizontal vector, you can take compass sensors.
There are also modules (google for 6DoF, 9DoF, etc.) which can make your life easier.

that can work with the pi.

Virtually any electronic sensor can work with RasPi.


Best wishes, Ivan Zilic.

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hi
the idea is to attach sensors to a frame, some on the horizontal and some vertical to compare the relative positions of the frame tubes to each other. i was playing with a protractor app on my android and want to do similar just with 3/4 sensors all showing on one screen and with relative measurements to each other.

[FLYFISH TECHNOLOGIES]

Hi,

the idea is to attach sensors to a frame, some on the horizontal and some vertical to compare the relative positions of the frame tubes to each other.

For such a static measurements I had good results with VTI's inclinometer chips. They are easy to solder by hand, precise and quite resistive to vibrations/noise. Their big drawback is price.
Another option is to take accelerometer chips (breakout board is mandatory since they are hard to solder by hand). You might need to implement some data filtering in software.


Best wishes, Ivan Zilic.

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New MMA7361 Module 3 Axis Accelerometer Inclination Sensor Arduino Triple Robot 251299133364
ive seen these on ebay would they do the job

[FLYFISH TECHNOLOGIES]

Hi

would they do the job

Depends on your requirements... They can be used (at least) for a first approximation.


Best wishes, Ivan Zilic.