What is your affordable choose of inclination (tilt angle) sensor? I need to measure the tilt angle of solar tracker and log the data for future studies. So it has to be somehow precise (~ ±5?).
Thanks!
What is your definition of "affordable"?
A 2D or 3D accelerometer can be used as an inclinometer and if properly calibrated, will be accurate to one degree or better.
AWOL:
What is your definition of "affordable"?
Between $0-30 
jremington:
A 2D or 3D accelerometer can be used as an inclinometer and if properly calibrated, will be accurate to one degree or better.
I heard that simple accelerometer can fail easily. You have to calibrate periodically.
I heard that simple accelerometer can fail easily.
Not likely at all. Every smart phone and tablet has one.
You have to calibrate periodically.
Mine seem very stable and do not require more than one calibration. l use the LSM303 series.
jremington:
Mine seem very stable and do not require more than one calibration. l use the LSM303 series.
OK, nice!
More questions:
- So any accelerometer can work like inclination sensor and many of them are precise?
- Digital sensor or analog sensor will work better?
- What about MMA7455 ($9)?
(2) depends on the digital dataformat and the accuracy of the ADC
robtillaart:
(2) depends on the digital dataformat and the accuracy of the ADC
Arduino A/D converter is 10bit. I think t's fairly enough.
I'm about noise problems and etc.