The default code example for the TinyAccelerometer reads raw accelerometer values which isn't terribly useful. I wanted to get a shock value, for example, if you attach it to a ball and want to measure how hard it was kicked, you can use this code in the loop():
void loop()
{
accel.read();//This function gets new data from the accelerometer
// Get magnitude of acceleration: sqrt(x*x+y*y+z*z) and subtract out gravity.
int32_t x2 = (int32_t)accel.X * (int32_t)accel.X;
x2 += (int32_t)accel.Y * (int32_t)accel.Y;
x2 += (int32_t)accel.Z * (int32_t)accel.Z;
SerialMonitorInterface.println(sqrt(x2) - 260);
delay(250);//We'll make sure we're over the 64ms update time set on the BMA250
}
Works nicely. If I flick the sensor with my finger I see a reading of about 200-500. +1g is equal to ~260. If you find this useful let me know.
