EAGLE Autorouter, When & How To Use
Designing a PCB layout is a work of engineering art, includes placing components and routing them through different layers. So when you assign the same job for different engineers, each one would make it in his own way. But sometimes when working on a complex design some help may be necessary to finish the work. Autodesk EAGLE provides an autorouter feature which may assist you in many cases.
The autorouter is a useful tool that creates many routing variations for the current component placement. However, it is not a completely replacement of manually routing method. It can help you in specific situations to augment your abilities, not replace them.
When to use the autorouter?
There are three main uses of the autorouter:
- Optimizing Placement
While there is no rule for placing the components of the circuits, you need to evaluate your placement to ensure that you can route all parts. Autorouter completion result could be used as an indicator of your parts placement, if it was 85% or greater this means you did a good job. If not, consider pushing your parts around.
- Discovering Bottlenecks
You can also use the autorouter to identify bottlenecks and other critical connection points that you might have missed when placing your components. Maybe you packed a couple of ICs too close together. Your autorouter can show you where you might need to leave more space between components.
- Getting Inspired
When you are stuck on a section and don’t know how to route your parts, then you can call the autorouter to see how it takes care of the job, then try routing that same spot yourself with your new perspective. You might just find a strategy for your traces that you didn’t see before your autorouter gave it a try.
Using EAGLE Autorouter
Now when you find yourself stuck on some area or you feel that you need to optimize your placement or discover the bottlenecks, it is time to launch the autorouter. Follow these steps to know how it works:
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