Do an initial “Import Changes from Schematic” (described later).

Move the new PCB document into the project and save it.Choose a size – Compromise between routing ease and wasted space.Create a blank PCB (easiest to use the wizard).Read and address all errors and warnings.Compile the design (will generate netlist).– By hand (if very few components) or automatically using Altium’s tools Annotate design by adding designators – Replace U? with U1, U2, etc.Check design rules: – Min spacing – Min.Use silkscreen to show how to align part.Make pads longer than pins (at least 1 mm).Refer to mechanical drawings in datasheets.Most library footprints are not for soldering by hand (so, edit them or draw your own).Print out footprints (on paper) and test the fit.Carefully check all footprint from libraries.Make sure pin numbers on footprint match component.Choose (hand-solderable) packaging: – Through-hole: DIP, PLCC, etc.Choose all parts before finalizing schematic.No shorts (like VCC and GND, for example).Ensure that VCC and GND are labeled correctly (everywhere).Use buses – Must label all signals pulled from buses.For large complicated designs, connect by net rather than by connection.Use NetLabels to label all wires – Can make your life easier in PCB layout.Use multi-sheet schematics for large designs.Testing – Test points on power lines – Test points on important signals – Use Power LED (for basic signs of life).Power – Use bypass caps for all ICs – Use large filter cap on power supply.Rat’s Nest – point-to-point drawings of all un-routed connectionsįind in Altium libraries Draw your own Double-check the pins Connect “hidden” pins to the correct net.Mil – 1/1000 of an inch (don’t confuse with mm).Via – plated through-hole in PCB to connect traces on 2 sides.Pad – metal on PCB where component is soldered.Trace (track) – metal connections on PCB between components.Net – representation of a signal (wire) and all of its connections.Cohn May 2010 Electrical Engineering University of Washingtonĭraw schematics Attach footprints for all components Compile design Assign design rules Place components Check design rules Route PCB Check design rules Generate manufacturing files PCB Design Using Altium Designer/DXP/Protel

Altium designer pcb library size