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tscircuit Essentials

Single Layer Jumper Autorouting

The auto_jumper autorouter is designed for single-layer PCB workflows where crossovers are resolved with jumper wires instead of plated vias. Configure your board with layers={1} and autorouter="auto_jumper" so the router keeps copper on one side and inserts jumper components when needed.

This guide covers:

  1. Setting up a single-layer board for jumper routing.
  2. Adding traces and validating where jumpers are used.

1. Configure the board for a single copper layer​

Use both layers={1} and autorouter="auto_jumper" on the board:

export default () => (
<board width="24mm" height="18mm" layers={1} autorouter="auto_jumper">
  <chip name="U1" footprint="soic8" pcbX={-7} pcbY={0} />
  <chip name="U2" footprint="soic8" pcbX={7} pcbY={0} rotation={180} />

  <trace from=".U1 > .pin1" to=".U2 > .pin8" />
  <trace from=".U1 > .pin2" to=".U2 > .pin7" />
  <trace from=".U1 > .pin3" to=".U2 > .pin6" />
  <trace from=".U1 > .pin4" to=".U2 > .pin5" />
</board>
)
PCB Circuit Preview

When traces must cross, the router can introduce jumper paths to preserve single-layer manufacturability.