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ARDUINO UNO-LSM303DLM

Former Member

I have an LSM303DLM accelerometer connected to my arduino UNO. Right now I am just measuring acceleration in 1 direction. If I understand right the accelerometer gives me the acceleration to a max 2,4, or 8 g .Is it therefore possible to calculate the speed I am moving, instead of the acceleration? Is that just "time passed * acceleration" ? and is then "time passed2 * acceleration" the total distance traveled? Just wondering if I could create a speedometer like this?


velocity += acceleration * delta_time;


what values i put in delta time  THE DELAY TIME THAT I PUT IN PROGRAM... ??


i upload the code from https://github.com/pololu/LSM303/tree/master/LSM303


the value that i take from accelerometer...what values are???are g values?????


2G is 19.62/s^2 (2x9.81m/s^2) or not....



Let's say we have ideal situation, where the moving object moves in 1 direction only, straight forward, without hills or whatever...

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    Hi EV

    I think the following applies.

    Since the accelerometer only measures speed increase. If the object is not  changing speed ie. at any constant speed. then there is no scceleration. Hence no output

    I think you could measure the speed if the acceleration was constant and the time or distance were known.

    Sorry for thr negative reply but I would also like to measure speed/distance using a sensor other than sound or physical (Magnetic, interrupter,etc)sensors.

    Bill

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  • 0

    Hi EV

    I think the following applies.

    Since the accelerometer only measures speed increase. If the object is not  changing speed ie. at any constant speed. then there is no scceleration. Hence no output

    I think you could measure the speed if the acceleration was constant and the time or distance were known.

    Sorry for thr negative reply but I would also like to measure speed/distance using a sensor other than sound or physical (Magnetic, interrupter,etc)sensors.

    Bill

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