explain!!!

[XL-power]

hi all

i write a program in order to move a servo motor according to an Accelerometer ....and yes the motor moves while you are change the direction of the accelerometer but ... i face a problem that the servo sometimes moves free whithout touch the accelerometer

is there any thing wrong?how can i control the servo motor so that it moves according to the movement of the sensor only ...

my circuit : accelemeter >> microprocessor>>relays>>servo motor

thanks in advance

 

[Nigel Goodwin]

Presumably your software has a bug?, apply normal de-bugging techniques - in particular make sure there isn't any movement data comiing from the accelerometer.

What are the relays for?.

 

[XL-power]

Presumably your software has a bug?, apply normal de-bugging techniques - in particular make sure there isn't any movement data comiing from the accelerometer.

What are the relays for?.

i don't know if i get your point!!
actully i write my program using c-language

we use relays as h-bridge for the output of the microprocessor

 

[crutschow]

The accelerometer may have a small output offset voltage, even when it is not moving, which your system is responding to.

 

[JimB]

As previously suggested, a programming bug, or, there are is some interference signal getting on to the the signal wires from the accelerometer to the micro processor.

JimB

 

[Nigel Goodwin]

i don't know if i get your point!!
actully i write my program using c-language

we use relays as h-bridge for the output of the microprocessor

So you're not using servos then?.

 

[XL-power]

So you're not using servos then?.

i use them =(

 

[XL-power]

The accelerometer may have a small output offset voltage, even when it is not moving, which your system is responding to.

so what i have to do?

 

[blueroomelectronics]

Post your schematic.

 

[XL-power]

Post your schematic.

sorry dont have it

this is my program may give some points
[