Back to Course

PCB DESIGNING AND MANUFACTURING

0% Complete
0/0 Steps
  1. INTRODUCTION
    4 Topics
  2. CONDUCTOR AND CONDUCTIVE PATHS
    3 Topics
  3. ZERO PCB
  4. OVERVIEW OF ELECTRONICS
    4 Topics
  5. CLASSIFICATION OF PCB
    2 Topics
  6. EAGLE OVERVIEW
    2 Topics
  7. COMPOSITION OF PRINTED CIRCUIT BOARD
    3 Topics
  8. BRIEF ABOUT COPPER
  9. COLOR OF THE PRINTED CIRCUIT BOARD
  10. PCB MANUFACTURING
  11. PCB DESIGNING
    2 Topics
  12. PCB DESIGNING SOFTWARE
    3 Topics
  13. SCHEMATIC STUDY
    4 Topics
  14. PCB TERMINOLOGIES
    13 Topics
  15. ROUTING
    5 Topics
  16. GERBER GENERATION
    4 Topics
  17. GROUND PLANE
  18. BILL OF MATERIAL
    1 Topic
  19. MISCELLANEOUS ACTIVITY
    1 Quiz
  20. ROUTING RULES
    6 Topics
  21. ACTIVITY 1
    1 Quiz
  22. ACTIVITY 2
    1 Quiz
  23. ACTIVITY 3
    1 Quiz
  24. ACTIVITY 4
    1 Quiz
  25. SCHEMATIC DESIGN
    13 Topics
  26. LAYOUT DESIGN
    8 Topics
  27. ERC
    8 Topics
  28. DRC
    3 Topics
  29. ACTIVITY 6
    1 Quiz
  30. Activity 7
    1 Quiz
  31. ACTIVITY 8
    1 Quiz
  32. ACTIVITY 9
    1 Quiz
  33. ACTIVITY 5
    1 Quiz
  34. ASSIGNMENT 1
    2 Topics
  35. ASSIGNMENT 2
    1 Topic
  36. MISCLLANEOUS ASSIGNMENT
    1 Topic
In Progress
Lesson 37 of 36
In Progress

GRID

31/07/2021

GRID

The PCB Editor is a grid-based design environment – design objects are placed on what is referred to as the placement, or snap grid. As well as the placement grid, the software includes a number of additional snap features, designed to help you accurately position and align design objects. 

UNDERSTANDING THE GRID

In the schematic editor we never even looked at the grid, but in the board editor it becomes much more important. The grid should be visible in the board editor. You can adjust the granularity of the grid, by clicking on the GRID icon — . A 0.05″ grid, and 0.005″ alternate grid is a good size for this kind of board.

Default grid settings are good

EAGLE forces your parts, traces, and other objects to “snap” to the grid defined in the Size box. If you need finer control, hold down ALT on your keyboard to access the alternate grid, which is defined in the Alt box.

Let me paint a few pictures for you:

Notice how in this image I have set the grid size to 0.8mm which matches the IC and I can get the capacitor to align perfectly to the pin? Well, now the SOIC-16 is also aligned to the same grid but the problem is that component’s pin pitch is 1.27mm which means the capacitor won’t align to the pin perfectly and looks fairly ugly now.

Now take a look at this: