Hi,
I am using this to measure the angular velocity of a robotic arm. When the arm is in rested position on the ground (all motors that woulds move this arm is off), the analog output value is not constant. I am using the value to determine the absolute position of the arm. Due to the error, even if the arm is at rest, over a period of time the problem is becoming more observable. I am sampling the value at ~ 1000/10,000 samples per second. Is this acceptable ?

Do you have a guideline of frequency at which the value must be sampled ?


Regards
Saju

Hi,

Remove the Gyro board from your robotic arm. Connect only vcc (5v) and ground to the board and check the output pin voltage. In resting position, it outputs around 1.6 volt. If you move clockwise, voltage goes up to 3.3v and in anticlockwise direction it goes to 0v and then return to 1.6v(The voltage at resting position on any angle).

Best Regards

Hi,
Thanks for the help. The problem is not with the gyro, but with my microcontroller analog sampling circuit. There is too much of noise that I am getting error in the millivolt range. When I measured with a multimeter on the output of gyro, it display 1.650 V as specified by the datasheet.


Thanks