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tsupuntu
Joined: 05 May 2006
Posts: 9
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| Why digit show 1 and 7 light show is more than 2,3,4,5,6,8,0 |
 Posted: Fri Oct 06, 2006 5:15 pm |
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I used seven segment commom anote .
Why digit show 1 and 7 light show is more than 2,3,4,5,6,8,0 ? |
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ak6dn
Joined: 08 Jan 2006
Posts: 23
Location: Saratoga, CA USA
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| Re: Why digit show 1 and 7 light show is more than 2,3,4,5,6 |
| Posted: Fri Oct 06, 2006 6:34 pm |
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| tsupuntu wrote: | I used seven segment commom anote .
Why digit show 1 and 7 light show is more than 2,3,4,5,6,8,0 ? |
Probably because you are using a single current limiting resistor at the common anode pin, rather than seven current limiting resistors, one at each of the cathode pins?
Just guessing here, you have not really provided enough information...
With seven resistors (one per segment) the segments should each illuminate at about the same brightness. WIth just one resistor, the more segments you turn on, the dimmer each will get ('1' will be brightest, '8' dimmest). |
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