mlampert wrote: ↑
Sat Mar 30, 2019 5:21 pm
Would you know how this balancer works?
Of course I do.
Here's a crude animation of the lever movement.
The weight to be weighed is put onto the slowly moving group on the right. There is a voice coil motor on the end of the long lever (on the left side). And an optical position sensor. The motor and the sensor are tied in a feedback loop, so the lever never moves (the motor compensates the force created by weight being measured). ADC samples the current flowing through the motor, and converts it into a displayed value.