Patent ID: 8498739

Claim:
A computer implemented method of calibrating a grain distributor for electronically controlled operation, comprising: rotating a coded portion or a first sensor unit and a second sensor unit operably coupled to a distribution spout while unique digital code clusters each associated with a desired discharge position of the distribution spout on the coded portion move relative to the first sensor unit and the second sensor unit via a motor controlled by a control processor; detecting a first digital code cluster with the first sensor unit and the second sensor unit which generate digital signals representing the first digital code cluster; sending the first digital signal to the controller processor; recording the first digital signal; detecting a first edge of a first position proof window associated with the first digital code cluster with the second sensor unit; recording a first time value associated with a location of the first edge of the first position proof window; detecting a second edge of the first position proof window; recording a second time value associated with a location of the second edge of the first position proof window; calculating a midpoint value between the recorded first time value and the recorded second time value; and associating the midpoint value with the recorded digital signal for a location of the first position proof window.