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weatherbox:dragonfruit:pcb_rules [2016/02/24 20:50] garrettz |
weatherbox:dragonfruit:pcb_rules [2021/09/19 21:59] (current) |
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| - | ==== PCB Professional Design Rules ==== | + | ====== PCB Professional Design Rules ====== |
| These 28 Basic PCB design guidelines set out best practice to reduce the cost of your boards and to minimize the risk of errors arising during manufacture. | These 28 Basic PCB design guidelines set out best practice to reduce the cost of your boards and to minimize the risk of errors arising during manufacture. | ||
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| High power boards have different rules especially in terms of spacing, traces size and power isolation. Manufacturers have different requirements; make sure you read their own guidelines before sending your design. Naming and file formats also vary depending on the manufacturers. | High power boards have different rules especially in terms of spacing, traces size and power isolation. Manufacturers have different requirements; make sure you read their own guidelines before sending your design. Naming and file formats also vary depending on the manufacturers. | ||
| - | ===PCB Layout=== | + | |
| + | //Taken from [[http://blog.upverter.com/post/102541308937/28pcb|Upverter Blog]]// | ||
| + | ====PCB Layout==== | ||
| - Create your board frame on a 0.05” grid. Make the lower left corner start at 0,0. | - Create your board frame on a 0.05” grid. Make the lower left corner start at 0,0. | ||
| - Usually the board frame is rectangular. For specific reasons you could also do other types of shapes such as polygons. | - Usually the board frame is rectangular. For specific reasons you could also do other types of shapes such as polygons. | ||
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| - Use appropriate power symbols for All VCC, 5V, 3.3V etc. | - Use appropriate power symbols for All VCC, 5V, 3.3V etc. | ||
| - Add color notes to separate a complex design into various smaller bits (for example,charge circuit, accelerometer, etc). | - Add color notes to separate a complex design into various smaller bits (for example,charge circuit, accelerometer, etc). | ||
| - | ===Footprints=== | + | ====Footprints==== |
| - | - All footprints need a reference designator {{refdes}}. If you come across a part on a board that doesn’t have this, you should change it and save the library. For parts requiring it a pin one marker should be defined. | + | - All footprints need a reference designator (refdes). If you come across a part on a board that doesn’t have this, you should change it and save the library. For parts requiring it a pin one marker should be defined. |
| - All footprints need silkscreen indicators showing mechanical sizes, dimensions, or anything wired about the part. | - All footprints need silkscreen indicators showing mechanical sizes, dimensions, or anything wired about the part. | ||
| - To prevent it from flaking off easily silkscreen within a footprint or board should not go over pads or metal that will be exposed. | - To prevent it from flaking off easily silkscreen within a footprint or board should not go over pads or metal that will be exposed. | ||