Figure 1. Sharp GP2D12 voltage vs. range.
Figure 2. Linearized data after ‘k’applied.
Figure 3. Calculated distance using voltage measurement
and linearized formula.
14 SERVO 02.2012
coherent while I’m writing.
In short, no, you can’t hack these to make them faster.
In order to make the sensors reliable, there is a certain
hysteresis required to stabilize the signal and to filter out
some of the ambient light noise. These sensors can also be
fooled by external light shining on them and also by what
Sharp calls “glittery” surfaces like mirrors and glass.