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Thursday

Thursday

Hello all,

with the XDK at rest, I'm getting the below readings, does it make sense? Can you help with the units below?

"accel_x":"0","accel_y":"26","accel_z":"1025" <------is this accurate? shouldn't x=y=0 at rest?

"mag_x":"45","mag_y":"-15","mag_z":"-24"

"gyro_x":"1952","gyro_y":"-1403","gyro_z":"-14518", <----- does this make sense? what is the unit?

"lux":"2880" <------- what is the unit by default? with more light, the value goes up to 188000

"hum":"61", <-----Ok

"presure":"98908" <-----Ok

"temp":"24.671",<----- this is Celsius i assume

"noise":"0.000518" <-----what is the unit? is this in mVrms?

Solved! Go to Solution.

3 REPLIES 3

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Thursday

Thursday

Hi Nicolas,

Please see inline replies.

**"accel_x":"0","accel_y":"26","accel_z":"1025" <------is this accurate? shouldn't x=y=0 at rest?**

+/-200milli g due to internal noise.

When you place XDK in static position and 'z' axis points towards earth (there are notations marked for x,y,z axis on XDK device), The acceleration in z axis detected by XDK is not '0', it is 9.8m/s2, that is due to earth gravity (9.8m/s2 is equal to 1g). Here the unit is milli g (1000 mg = 1g).

**"mag_x":"45","mag_y":"-15","mag_z":"-24"**

±1300μT (x, y-axis), ±2500μT (z-axis) these are the maximum magnetic field strength detected by XDK in micro tesla. When you move XDK in x axis towards/outwards north direction from your place you can observe x axis value increase/decrease towards 1300micro tesla, similarly for other axis. Or you can take magnet and move towards XDK device x axis, you can see magnetic field varies.

**"gyro_x":"1952","gyro_y":"-1403","gyro_z":"-14518", <----- does this make sense? what is the unit?**

Unit is milli degrees per second. Here x = 1.952 dps, y=-1.403dps, z= -14.518dps. Ideally in static position it should be x = 0, y = 0, z=0.Due to internal noise +/-20 dps is acceptable

**"lux":"2880" <------- what is the unit by default? with more light, the value goes up to 188000**

0 lux to 1,88,000 lux is default. In apllication the unit is in milli lux. So, 2.88 lux, 188 lux is shown in your data.

**"hum":"61", <-----Ok**

%rh

**"presure":"98908" <-----Ok**

Pa

**"temp":"24.671",<----- this is Celsius i assume**

yes

**"noise":"0.000518" <-----what is the unit? is this in mVrms?**

It is in Vrms.

Also, for tracking purpose of message threads, please ''accept as solution'' if you got answers.

Thank You 🙂

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Friday

Friday

Re: Sensing Data Accurate?

Is there upper boundary on Lux, i noticed the value goes over 1M milli lux? there is min upper range for this data point?

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Friday

Friday

Re: Sensing Data Accurate?

Hi Nicolas,

In milli lux the max value is 1,88,000,000 milli lux.

Thank You 🙂

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