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PCB editor - can't draw ratline between manually-placed pads
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ademuri 7 years ago
**BUG** Concise problem statement: I can't draw a ratline (airwire) between manually-placed pads in the PCB editor. Steps to reproduce bug: 1. Create a new PCB 2. Place two pads 3. Use the 'Connect Pad to Pad' tool 4. Try to connect the two placed pads Results: Unable to place a ratwire on the placed pads. Expected results: I should be able to place ratwires. Browser: Chrome
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andyfierman 7 years ago
Hi Ademuri, Welcome to EasyEDA. The behaviour you describe is not a bug. The `Connect Pad to Pad` tool is to draw ratlines between the pads of a PCB footprint. It will not draw ratlines between isolated pads or vias that are not part of a component PCB footprint. If you place some PCB footprints on a new PCB and then use the `Connect Pad to Pad` tool, you will find that EasyEDA draws the ratlines. The `Connect Pad to Pad` tool does not work just connecting isolated pads or vias, because they are physical elements of the routing between the pads on components and so are layout dependent. For example if there are two SMD footprints both on the same side of the board then no vias would be needed to connect the pads but if the two components are on opposite sides of the board then vais would be needed to complete the routing between the component pads. This means that the isolated pads or vias are not directly part of the connectivity between a pair of component pads and so are not something you can draw a ratline to or from. If you need to place a single pad somewhere then you must use a single pin through hole PCB footprint such as HDR1X1 (from the EasyEDA Libs) or a surface mount single pad PCB footprint such as Test_Point frm the SHIFT+F searchable library.
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