: Located at the top of the workspace. Tap any icon to drop a component onto the grid.
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: Tap a terminal node, then tap a second terminal node. EveryCircuit draws the wire automatically. everycircuit manual
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Tap the icon to map its electrical behavior onto the oscilloscope. : Located at the top of the workspace
Digital sources (high/low clocks) and logic probes. 3. Step-by-Step Guide: Building Your First Circuit
If your circuit isn't behaving correctly, check for these common user errors. The "Floating Node" Error : Tap a terminal node, then tap a second terminal node
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: Located in the lower-right corner. Freezes the animation and calculations.
If your circuit doesn't work, consult this flowchart.
| Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | | Simulation is paused or no ground. | Press Play. Add a Ground symbol. | | LED stays off (even with battery) | Polarity reversed OR current too low. | Flip the LED (long leg to positive). Lower the resistor value. | | Voltage source is red/error | Short circuit. | Two wires connected directly across a battery with no load. Insert a resistor. | | Transistor won't switch | Base resistor too large. | Lower the base resistor value to increase base current. | | Oscilloscope is flat line | Wrong node selected. | Delete the trace. Drag a wire from a changing node (e.g., capacitor plate). | | App crashes on iPad | Too many components. | Reduce component count below 100. Use the web version for heavy circuits. |