signal problem

hi, i was trying to read a signal from an acceleroemter and i dont know why it was going ok but now the signal that is not filtered just reads a singal betwwen 0 and 5 always. The board is ok and the accelerometer is just connected to the arduino so it cant be burned. I dont know where is the problem

Supply a link to the accelerometer and your code.

Weedpharma

Ok I solved that problem, th problem now is that im reading a very precise acceleroemter and while i am reading it any movment of the board or the wires makes a huge noise on the measurement. Does anyone know why that kind of noise just moving the board while measuring the signal?
Thanks in advance

PS. the measure should be around 0.6 V but each time i move the board or the wires it goes crazy
tha accelerometer is a 352C33 type

the datasheet tells me this sensor isn't ideal for a 5V environment
Datasheet

and if i connect the accelerometer to 12 Volts and then reduce with resistors that signal until the arduino?¿will that work?

The data sheet specifies a constant current source to supply the sensor.

and if i connect the accelerometer to 12 Volts and then reduce with resistors that signal until the arduino?¿will that work?

Feed 18V+ (laptop powers often 18..19V), or u step-up converter.
It's OK to use a voltage divider on the output, as long as current is not to high