Guest
You can use the following Digital Angle Gauge
http://www.wixey.com/anglegauge/index.html#wr300type2
http://www.wixey.com/anglegauge/index.html#wr300type2
Navigation
Install the app
How to install the app on iOS
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
More options
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Guest
Thanks!
The thing is that wixey digital gauge has following specs.
Range: +/- 180 degrees
Resolution: 0.1 degrees
Accuracy: +/- 0.2 degrees
How can I specify my system in the same way as wixey did ? I tried the following approach. Please tell me that am I on the right track.
The thing is that I am using ADXL335B with 10 bit ADC. My power supply is 3.3V and Aref = 5V. I am doing single axis tilt calculations.
The data sheet of the sensor is as follows
http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL335.pdf
My calculations are as follows
Desired Range = 0 to 180 degrees.
1. Resolution : 3.3 / 1024 = 3.2 mV
2. ADC_out = ((3.3) / 5 ) x 1024 = 675
3. (1.99-1.65) = 0.34 ; 1.99 corresponds to 90degree and 1.65 V correspond to 0 degree.
0.34/90 = 3.78 mV / degree
So, 1 STEP / degree
How can I calculate the accuracy of my system?
The thing is that I found the following paper on page 2. It uses arcSin() to calculate the angle resolution
http://www.nxp.com/files/sensors/doc/app_note/AN3107.pdf
It calculates the resolution in a different way and I get confused which method is correct.
The thing is that wixey digital gauge has following specs.
Range: +/- 180 degrees
Resolution: 0.1 degrees
Accuracy: +/- 0.2 degrees
How can I specify my system in the same way as wixey did ? I tried the following approach. Please tell me that am I on the right track.
The thing is that I am using ADXL335B with 10 bit ADC. My power supply is 3.3V and Aref = 5V. I am doing single axis tilt calculations.
The data sheet of the sensor is as follows
http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL335.pdf
My calculations are as follows
Desired Range = 0 to 180 degrees.
1. Resolution : 3.3 / 1024 = 3.2 mV
2. ADC_out = ((3.3) / 5 ) x 1024 = 675
3. (1.99-1.65) = 0.34 ; 1.99 corresponds to 90degree and 1.65 V correspond to 0 degree.
0.34/90 = 3.78 mV / degree
So, 1 STEP / degree
How can I calculate the accuracy of my system?
The thing is that I found the following paper on page 2. It uses arcSin() to calculate the angle resolution
http://www.nxp.com/files/sensors/doc/app_note/AN3107.pdf
It calculates the resolution in a different way and I get confused which method is correct.