5. PCB Layout

posted Feb 3, 2010, 9:45 PM by Bill Bai   [ updated Feb 5, 2010, 6:20 PM ]
After much elbow grease and hard work, here is the final PCB layout with all copper and silkscreen layers.  I placed all the components and routed all the traces by hand.  It was rather tricky and tedious at first, but I soon worked out a method to my madness.  As you will probably notice in the top and bottom copper later close ups below, I tried to route all my horizontal traces on top and all my vertical traces on the bottom layer.  The work was complicated by the amount of IC's required to implement the auto-ranging functions.  This resulted in a huge amount of vias, but it simply couldn't be avoided.

Here's the final 'Design Status Report' generated by PCB Artist.

Design Status Report
--------------------

Report File    : H:\Documents\Purdue Homework\(7) Fall 09\ECET 297\297 DVM Project (PCB - Design Status Report).txt
Report Written : Wednesday, February 03, 2010
Design Path    : H:\Documents\Purdue Homework\(7) Fall 09\ECET 297\297 DVM Project.pcb
Design Title   : 
Created        : 10/9/2009 23:02:58
Last Saved     : 10/23/2009 20:49:28
Editing Time   : 1362 min
Units          : mil (precision 0)

Board Area
----------
22600000 mil squared

Layers
------
Name               Type            Side     Net

Top Silkscreen     Silk Screen     Top                     
Top Copper         Electrical      Top                     
Top Solder Mask    Solder Mask     Top                     
Documentation1     Documentation   Top                     
Top Paste Mask     Paste Mask      Top                     
Bottom Silkscreen  Silk Screen     Bottom                  
Bottom Copper      Electrical      Bottom                  
Bottom Solder Mask Solder Mask     Bottom                  
Documentation2     Documentation   Bottom                  
Bottom Paste Mask  Paste Mask      Bottom                  

Component List
--------------
Comp Type     Package     Components   Pins

R               SM              27      54     
C               SM              9       18     
ICL7106CPL      DIP40           1       40     
4023            DIL             1       14     
4071            DIL             1       14     
4011            DIL             1       14     
4016            DIL             2       28     
D               DSC             3       6      
2N3702          DSC             1       3      
4029            DIL             1       16     
4028            DIL             1       16     
H4101B          DIL             1       20     
2WPHDR          HDR2            1       2      
297TestHeader   DIL             1       14     
NO PushButton   USER            1       2      
9V Battery      USER            1       2      
3WPHDR          HDR3            2       6      
H4101A          DIL             1       20     
4030            SOL             1       14     
LED             DSC             4       8      
1WPHDR          HDR1            11      11     
4077            DIL             1       14     
MMBF170         SOT23           2       6      

Total:                          75      342    

Net List
--------
Net Class     Nets  Track Length  Vias  Connections   Con Length

Signal          89      228339       180     0          0           
Power           1       0            0       0          0           

Total:          90      228339       180     0          0           

Drill List
----------
Drill Diameter  Holes

24              180            
30              8              
32              179            
35              23             
35              40             

Total number of drill holes 430.
Total number of free pads 0.

End Of Report.

And finally, the good stuff you're actually looking for: pretty pictures.

Top and Bottom Copper Layers.

Just the Top Copper Layer

Just the Bottom Copper Layer.

And for those of you dedicated enough to scroll down this far....
Top Copper and Silkscreen.

Bottom Copper and Silkscreen
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