Rm g146 (lsm303dlh)

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1

Hello
I working on the RM G146’s LSM303DLH(accelerometer) sensor for measure the Acc. But i have question Do i must Use resistor10kohm for I2c (SCL & SDA) bus line?
because I see this pullup resistor is necessary on the LSM303DLH datasheet but i can’t see These pullup resistor on the RM G146 datasheet
When i use*Crystal 16Mhz for XTAL on AVR the Sensor is hanging and when i Use these Pullup this problem is solving!
when i test whit these Pullup I see the X(MSB) Y(MSB) Z(MSB) properly But the x(lsb) y(lsb) z(lsb) is changing very fast (when sensor is not moving) like a noise
where is my problem

please reply hurry because i have competition

BEST REGARDS

2

Pull-up resistors are always required when using I2C communication. Sometimes they are included into the devices for convenience but it is always good measure to add your own if you are uncertain.

If you provide a clear picture or a schematic of your setup we will be able to help you further