@cnx @tyil :neocat_magnify: doesn't really say what the sensor is. it doesn't seem very good.

ProtoArc Advanced Optical Tracking
Nominal value: 400 dpi
Minimal and maximal value: 100/200/400/800/1600 dpi

you'd have to load up an FPS and just spin the ball to find out. the ploopy uses a pixart which is basically the best (and what the gameball uses) and it will not skip. the ploopy mini uses a cheapo sensor and i can play on it (because i'm not that good anyway :cirno_shrug:) but if you really spin the ball hard it will skip.

for office work it probably doesn't matter. i do like supporting open hardware though. colin puts good stuff in there.