Hi every one.
Is there any chances to check the seven segment working or not ,with any sensor ?
Is there any chances to check the seven segment working or not ,with any sensor ?
7-segment? LED, LCD, incandescent, fluorescent? Other?Hi every one.
Is there any chances to check the seven segment working or not ,with any sensor ?
7 segment .7-segment? LED, LCD, incandescent, fluorescent? Other?
Yes, you said that in the original post. What kind of 7-segment display. LCD, LED, ...7 segment .
With out using 7 segment terminals points i want to check the working or not based on the each segment light(a,b,c,d,e,f,g ) .You could use the diode check function available on many DVMs.
LEDYes, you said that in the original post. What kind of 7-segment display. LCD, LED, ...
Both are 7-segment but very different methods are needed to test.
View attachment 111139[/i want to test led seven segment .
@GopherT thank you for u r clear explanation but i dont want that type i want check each segment with any sensor like LDR .@Nanda Kumar 1
Connect a 1k ohm resistor to a 9V battery and then connect a black wire to the battery (-) and a red wire to the end of the resistor that is NOT connected to the battery.
Then touch red and black wires to two pins of the 7-segment display. Connect every combination. LEDs have a polarity so they will not light up if the red and black wires are connected "backwards" so you need to test every combination in both possible polarities.
This will light only in segment at a time.
How many digits is your display and how many pins?
@d1324 i want to check all segments in one timeAnother option is to use one optical sensor and turn on each LED separately. Position the sensor so it can "see" all segments, or use a light pipe to redirect light.
Thank you i will try thisDrive each segment according to GopherT in post #8. Take 8 phototransisotrs, each one pointing to one segment plus the decimal point if that exists. You can then "And" the outputs of the phototransistors such that you only get a true output when all segments light.
You can also do that with a video camera but it would be more difficult.
Hire someone who knows how to do it and let him do it for you. No sensor involved at all.Is there any chances to check the seven segment working or not ,with any sensor ?
???@d1324 i want to check all segments in one time
i want to check multiple digits at a time like (a ,b,c,d,e,f,g pins).And Brightness???
In actual operation or at the bench not connected? Single digit or multiple digit?
What are you trying to confirm? Forward voltage? brightness?
by Aaron Carman
by Duane Benson
by Duane Benson
by Jake Hertz