I want to use an optical mouse to measure displacement in X and Y direction of my robot. I'm using Ubuntu mate 18.04 on raspberry pi and wrote the following python code :
mouse = file('/dev/input/mouse0') while True: status, dx, dy = tuple(ord(c) for c in mouse.read(3)) def to_signed(n): return n - ((0x80 & n) << 1) dx = to_signed(dx) dy = to_signed(dy) print "%#02x %d %d" % (status, dx, dy)
But these displacement values are velocities dependent. I just want the displacement value, which is acceleration independent.