Why not have an electromagnet at each face and ball-bearing in a 3 way race. You weight the device by turning on the opposite number's coil. You don't guarantee a particular roll but the statistical weighting should be pretty strong.
I wonder if you tuned the e-m coil for a particular frequency if you could make the device passive and weight it using an external frequency change?
Or use computer vision, a passive dice with a metal insert and a magnetic table; switch on the magnet when the dice hits the table right (this version would be highly obvious but perhaps could be made less so).
I wonder if you tuned the e-m coil for a particular frequency if you could make the device passive and weight it using an external frequency change?
Or use computer vision, a passive dice with a metal insert and a magnetic table; switch on the magnet when the dice hits the table right (this version would be highly obvious but perhaps could be made less so).