![]() ![]() As you drag your mouse, it tells you how many pins it has put down DipTrace includes an "add-row-of-pins" option. We've used IC so that when a PIC 18F2455 is added to our designs, it will automatically be labelled IC1, IC2 etc.įor this part, we're drawing a 28-pin SOIC chip (SMT version of the 18F2455) which consists of 2 rows of 14 pins. RefDes is what is used every time a new instance of this component is added to your PCB. Create a new library (or open an existing custom library if you're adding to one you've already started) and from the select įill in the name and RefDes values. ![]() Start the DIPTrace pattern editor application. ![]() Here's a quick overview of how to do this using DipTrace: Whenever we've made a PCB we've always had to create a library of custom layouts - even when the PCB software includes libraries of common components from a variety of different manufacturers.īecause we're getting to like DipTrace very quickly and plan to use it for all our PCB work in the immediate future, the first thing we need to do is re-create our library of custom layouts. This is because most PCB packages use "standard" pins and pad sizes, which - while fine for mechanised pick-and-place and SMT soldering machines - can be a nightmare to solder by hand. Whenever we design and layout PCBs for homebrew manufacture, there always comes a time when we have to undo a great deal of work, and amend the footprints or patterns for the components on the PCB layout. ![]()
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