Simple Circuit Help

Open index.html to build and test a small circuit on the grid.

Place Parts

• Choose a tool from the top toolbar, then click on the canvas to place it.
• Use the dropdowns to choose the power source, consumer, switch, semiconductor, fuse, or powerline type.
• Enable Vertical before placing a part to rotate new parts vertically.

Edit Parts

• Use Select to select a part or powerline.
• Use Rotate, Edit, or Delete from the side toolbar.
• Ctrl+left click a switch to toggle it. Ctrl+left click a tripped fuse to reset it.
• Ctrl+left drag a potentiometer up or down to change its resistance.
• Relays have a rated coil voltage. A monostable relay closes only while its coil is supplied; a bistable relay changes state on each new coil activation.

Draw Connections

• Select Powerline, click the start point, then click each next point.
• Ctrl+left click a hollow contact square or crossing to make it an electrical connection.
• Filled contact circles are connected. Hollow squares or bridge crossings are not connected.

Identifiers

Each part shows its identifier at the lower right: R for resistors and potentiometers, Q for light bulbs, transistors, and diodes, L for powerlines, F for fuses, S for switches, and P for power sources.

Pins use the part identifier plus the pin number. For example, resistor R1 has pins R11 and R12.

Circuit JSON

• Click Circuit to view, copy, edit, or import the circuit JSON.
• Connections are saved as connector ID pairs, such as R11R21.
• The JSON uses the current connector-based format only.

Simulation

• Enable Trace to highlight active powerlines.
• Enable Values to show volts, amperes, and watts for each component.
• Diodes conduct from their first pin to second pin when the threshold voltage is reached.
• Enable Run to update fuse overload timing.
• Set Milliseconds to control the simulation interval.