There are two modes for creating connections (wires): automatic, and manual. These modes are selected via the Connection Routing Mode pulldown menu in the toolbar. Experiment with both - automatic routing is often better for small circuits, whereas more complex circuits may need manual routing.

In automatic mode, create a connection by dragging from either a component pin or an existing connection, and releasing the mouse over the desired pin or connection. You'll see the straight-line being drawn turn orange when a valid connection will be created on mouse release. If the line you're drawing is black, it's either because there's nothing beneath the mouse cursor, or you're attempting to connect together two items which are already connected. When flowcharting, the criteria for a valid connection are more complex - but we'll get to that later.

The best way to get a feel for manual connection routing is by experimenting with it. Click on the starting pin or connection, and then extend the proto-connector by moving the mouse away from where you clicked. To place a corner, left-click. To cancel drawing the connection, either press Esc, or right-click the mouse.

KTechlab tries its best to maintain the routes your connections take. However, if dragging a component results in the end points of a connection moving relative to each other, KTechlab will be forced to redraw the connection using auto-routing. Before moving a component, you can see which connectors will have to be rerouted - as they will turn gray on clicking.

To remove an existing connection, select it by drawing a small select-rectangle over part of the connector, and hit Del.