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My 7-segment LED Clocks
My blue 7-segment collection from LC-Led Inc. (9 to 107mm digit
size):
![](ledclock/all.jpg)
0.56", 1" and 4" displays:
![](ledclock/pict0001.jpg)
The 4" displays are really huge:
![](ledclock/pict0002.jpg)
Solder side of a 4":
![](ledclock/pict0003.jpg)
![](ledclock/pict0004.jpg)
All 4" displays together, this clock will be enormous:
![](ledclock/pict0005.jpg)
For size reference:
![](ledclock/pict0006.jpg)
4", all segments lit @ 20mA LED current, as my Dimage7 sees it:
![](ledclock/pict0007.jpg)
More like I see it:
![](ledclock/pict0008.jpg)
4", all segments lit @ 2.5mA:
![](ledclock/pict0009.jpg)
In full darkness at 20mA/segment:
![](ledclock/pict0010.jpg)
Close up at 10mA/segment:
![](ledclock/pict0011.jpg)
Close up at 5mA/segment:
![](ledclock/pict0012.jpg)
A few pictures of the Conrad 641148 DCF77 receiver modules:
![](ledclock/pict0013.jpg)
![](ledclock/pict0014.jpg)
![](ledclock/pict0015.jpg)
To be continued...
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