how to check seven segment working or not using sensors?

hp1729

Joined Nov 23, 2015
2,304
i want to check multiple digits at a time like (a ,b,c,d,e,f,g pins).And Brightness
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.
 
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