how to check seven segment working or not using sensors?

Discussion in 'General Electronics Chat' started by Nanda Kumar 1, Aug 28, 2016.

  1. hp1729

    Well-Known Member

    Nov 23, 2015
    Use the LEDs as a sensor and place 8 LEDs over the segment (including decimal point). An LED will generate a voltage when exposed to light. Red LEDs are sensitive to red light. So it will monitor brightness and color.