3-Axis Accelerometer (LIS302DL)

[Gusse]

Display is from Nokia 3310 and it is easy to play with. Yeah!

I could try to make a code with all neccesary LCD srcipts too. At the moment this accelerometer is just one part of a bigger system and a part of a bigger code bunch. It will take some time, but I'll come back with the code, no problem. Anyway, origin of the display driver is from this forum, therefore I would like to thank those who have done the pioneer work! Thanks!

As said earlier, my primary use case was motion detection (alarm). For that purpose LIS302DL works fine, but then I started to look more advanced solutions; acceleration, speed, range, etc. Nice features, but one problem is causing grey hairs to my.

If device is at fully horisontal level (Z-axis is pointing to center of the earth), then everything is OK. But if it is rotated/tilted X, Y, Z or any combinations (pitch, roll, yaw), then readings are not any more right. Spec also says so.

There are quite lot of discussions about how to get rid of this limitation, but no really simply solution. This is one good post, which describes more accurately the problem http://www.electronicspoint.com/acce...n-t119225.html

BR,
-Gusse-

EDIT: Here is also code for LIS302DL with Nokia 3310 LCD. This one shows captured acceleration values on screen: 1st X, 2nd Y, 3rd Z. No bargraphics included because grachics are located in external EEPROM. LCD is connected to PortB, accelerometer to PortC & D (partial), see file for more details. Change pins to fit you application (I'm using 16F877A).