Hi,

I bought an accelerometer from Ebay to monitor the angle: http://www.ebay.co.uk/itm/281048570799?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Is there a way to know the output voltage per degree?

 

Datasheet

 

In the datasheet I can only see mV/g and not mV/degree

 

Accelerometers measure force in Gravity mv/g you have to be moving in one of the axis X, Y,Z.

You need an Inclinometer to measure angular displacement.

 

Hello,

Take a look at the following page for an inclinometer:
http://www.maximintegrated.com/app-notes/index.mvp/id/1048

An other name could be a tilt sensor:
http://www.aositilt.com/Ap0good.htm

Both links come from this EDUCYPEDIA page:
http://educypedia.karadimov.info/electronics/sensortit.htm

Bertus

 

So it is not possible to monitor the angle with an accelerometer?

 

Hello,

AD has some sensors that might be used:
http://www.analog.com/en/mems-sensors/mems-inertial-sensors/products/index.html

Look for the ADIS series.

Bertus

 

An accelerometer, when placed with the motion axis in a vertical position, will output a value representing 1g, even when stationary. For various angles, use the COS function.

 

Just to expand on BillB3857's post, with the accelerometer axis vertical you will get an output proportional to +/- 1g. With it horizontal you will get an output proportional to 0g (expect some noise on the output). The output you get when the accelerometer is between horizontal and vertical is related to the angle by the standard trigonometric functions.