COMPARE RASPBERRY SHAKE SENSORS
The 1D, 3D, 4D and “Shake & Boom” have the same capabilities for detecting vertical Earth motion.The 3D replicates these abilities for lateral motion, providing the user with a fuller view of earth motion in all 3 dimensions. The 4D has a 3 dimensional accelerometer built into the board which is interesting for people who live in earthquake zones. Even during strong motion earth motion should remain on scale with the added benefit of being able to detect lateral motion as well.