Editing Printed Circuit Boards
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=== Overview === | === Overview === | ||
=== Software Design === | === Software Design === | ||
− | See [[ | + | See [[#Software_design_tools|Software Design Tools]] below. |
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==== Step by Step by using Software Design Tool ==== | ==== Step by Step by using Software Design Tool ==== | ||
*make sure the dimension and shape of PCB | *make sure the dimension and shape of PCB | ||
− | *make sure the size and location of | + | *make sure the size and location of Via for PCB stand |
− | *Make sure each components footprint | + | *Make sure each components footprint. |
*each components are placed on suitable place by put on a hardcopy of simulation PCB | *each components are placed on suitable place by put on a hardcopy of simulation PCB | ||
*All components get enough clearance between them. | *All components get enough clearance between them. | ||
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=== Manual Design === | === Manual Design === | ||
− | + | Somepeople do this with layout on clear film or by directly drawing on a circuit board, of even by scratching, grinding.... For now let them google this. | |
=== Homebrew fabrication === | === Homebrew fabrication === | ||
Before exploring these techniques, you should understand your options with regard to services such as BatchPCB.com, ExpressPCB.com and PCB123.com. Being able to have several boards fabbed in 2 days for $59 (for example) makes it harder to justify the hassle of etching your own boards at home. | Before exploring these techniques, you should understand your options with regard to services such as BatchPCB.com, ExpressPCB.com and PCB123.com. Being able to have several boards fabbed in 2 days for $59 (for example) makes it harder to justify the hassle of etching your own boards at home. | ||
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* [http://www.electricstuff.co.uk/pcbs.html "How to make really really good homemade PCBs"] by Mike Harrison 2007 | * [http://www.electricstuff.co.uk/pcbs.html "How to make really really good homemade PCBs"] by Mike Harrison 2007 | ||
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* [http://www.esmonde-white.com/home/diversions/etching-a-copper-pcb "Etching PCBs using Toner Transfer"] and [http://www.esmonde-white.com/home/diversions/milling-a-copper-pcb "Milling PCBs"] by Francis Esmonde-White, includes information on how to go from Eagle PCB to the etching or milling step | * [http://www.esmonde-white.com/home/diversions/etching-a-copper-pcb "Etching PCBs using Toner Transfer"] and [http://www.esmonde-white.com/home/diversions/milling-a-copper-pcb "Milling PCBs"] by Francis Esmonde-White, includes information on how to go from Eagle PCB to the etching or milling step | ||
* [[Toner Transfer]] -- This method involves laser printing your PCB design onto paper, then transferring toner onto copper-clad board. | * [[Toner Transfer]] -- This method involves laser printing your PCB design onto paper, then transferring toner onto copper-clad board. | ||
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*Prevent digital currents from contaminating analog currents | *Prevent digital currents from contaminating analog currents | ||
*Decouple high speed components | *Decouple high speed components | ||
− | *Use ground loop avoidance | + | *Use ground loop avoidance tehniques |
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===Design=== | ===Design=== | ||
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===References=== | ===References=== | ||
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*Grounding | *Grounding | ||
**[http://www.hottconsultants.com/pdf_files/june2001pcd_mixedsignal.pdf Partitioning and Layout of a Mixed Signal PCB]: The importance of single ground plane and partitioning of analog and digital signal trace | **[http://www.hottconsultants.com/pdf_files/june2001pcd_mixedsignal.pdf Partitioning and Layout of a Mixed Signal PCB]: The importance of single ground plane and partitioning of analog and digital signal trace | ||
** [http://techref.massmind.org/techref/noises.htm#unsplit_ground Massmind Techref: "Unsplit ground"] | ** [http://techref.massmind.org/techref/noises.htm#unsplit_ground Massmind Techref: "Unsplit ground"] | ||
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**[http://www.hottconsultants.com/pdf_files/ground.pdf Ground- A Path For Current Flow]: The importance of decoupling capacitors | **[http://www.hottconsultants.com/pdf_files/ground.pdf Ground- A Path For Current Flow]: The importance of decoupling capacitors | ||
**[http://www.ece.msstate.edu/courses/ece4512/des1_syllabus/current/PCB_Layout_Tips.ppt PCB Layout Tips]: a power point presentation | **[http://www.ece.msstate.edu/courses/ece4512/des1_syllabus/current/PCB_Layout_Tips.ppt PCB Layout Tips]: a power point presentation |