Thumbnails with Descriptions

 
Thumb and Description for Image 1:
Test circuitry on a breadboard. It works.
This uses a PIC, a CMOS4067, common cathode 7-Segment displays and 8 resistors.
It can control up to 16 7-Segment displays without additional hardware/software.
 
Thumb and Description for Image 2:
cardboard display holder for demonstration and testing purposes
 
Thumb and Description for Image 3:
here all 16 displays hooked up, 2nd PIC for communication w/ PC
all on the breadboard, with the displays stuck in a piece of cardboard to hold them
 
Thumb and Description for Image 4:
behind the cardboard... you can see solder side of the displays
 
Thumb and Description for Image 5:
another angle, closeup
 
Thumb and Description for Image 6:
yet another angle
the solder spool is used here to keep the U-shaped cardboard from falling over
 
Thumb and Description for Image 7:
overallview of the breadboard
 
Thumb and Description for Image 8:
the communications PIC with a MAX232 and its capacitors
 
Thumb and Description for Image 9:
the display PIC and the 4067 (note: the PIC is the smaller one :-)
 
Thumb and Description for Image 10:
ditto
 
Thumb and Description for Image 11:
overall breadboard, this time a sharper image
 
Thumb and Description for Image 12:
front of the cardboard
all displays run in time-multiplex.
ie. each is lighted up for a few msec, then the next.
this keeps the component count down :)
 
Thumb and Description for Image 13:
closeup
 
Thumb and Description for Image 14:
one of the display units w/o the cardboard
 
Thumb and Description for Image 15:
the back of the same, with the solder side
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