this post was submitted on 05 Jun 2025
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It's been a while since I've made a PCB so I can't remember what Horizon / Designspark PCB do, but this is a solved problem.
You merge nets when the user explicitly connects them (i.e. they are drawing a net and they click on another net).
I like how Simulink does this best - they fade wires when they cross without connecting - looks nice and makes connections obvious.
https://microcontrollerslab.com/wp-content/uploads/2019/01/20-single-scope.jpg