aviatorbja
Member
Hello,
I came accross some ADXL203 2 axis accelerometers. The output is very simple. 2.5 Volts is 0 g's and the sensitivity is 1000 mV/g.
I'm trying to build an inclinometer for my workshop.
The tilt angle is just asin(1/g), where the g's are in the range -1 to 1.
Using excel I've created a table for pitch angle versus volts for a total of 251 data points.
volts pitch angle
1.500 -90
1.508 -82.7
1.516 -79.7
.....etc
I thought I could use the lookup function to compute the angle, but reading the manual I don't think this is possible. I suppose direct calculation is possible, but my Picaxe 20x2 cannot do ASIN, only ATAN function.
I also realize that this topic has probably been discussed at some time, but I can't seem to find it within the forums.
Does anyone have any suggestions on the easiest way to accomplish this?
I came accross some ADXL203 2 axis accelerometers. The output is very simple. 2.5 Volts is 0 g's and the sensitivity is 1000 mV/g.
I'm trying to build an inclinometer for my workshop.
The tilt angle is just asin(1/g), where the g's are in the range -1 to 1.
Using excel I've created a table for pitch angle versus volts for a total of 251 data points.
volts pitch angle
1.500 -90
1.508 -82.7
1.516 -79.7
.....etc
I thought I could use the lookup function to compute the angle, but reading the manual I don't think this is possible. I suppose direct calculation is possible, but my Picaxe 20x2 cannot do ASIN, only ATAN function.
I also realize that this topic has probably been discussed at some time, but I can't seem to find it within the forums.
Does anyone have any suggestions on the easiest way to accomplish this?