GET YOUR BEARINGS
Plan your next CRUMB Circuit Simulator session
For educators and hobbyists who want to extract the most learning value from CRUMB, this guide proposes focused exercises. Each activity uses a specific built‑in tool, encouraging observation and comparison without requiring external hardware or undocumented features.
01 / THE GUIDE
Passive Network Comparison
Build a simple series resistor chain, then a parallel resistor network. Use the scope to add each network and note how the displayed details differ, reinforcing concepts of total resistance and current division.
- Compare the voltage drop across a resistor‑only circuit versus one that includes a capacitor to see basic reactive behavior.
- Swap a tactile switch for a slide switch in the same wiring to observe any visual differences in the simulation.
02 / THE GUIDE
Switch Type Observation
Create identical circuits that each contain a different switch type—tactile, slide, DIP. Activate the switches one at a time and watch the logic output visualisation to see how the simulation represents each switch.
- Use the Code Editor to write a short routine, then attach the microcontroller to a LED to watch the result in the visualisation view.
- Enter a known pattern in the Hex Editor and then read it back through the example circuit to confirm storage.
03 / THE GUIDE
Microcontroller Code Test
Write a minimal program in the Code Editor that toggles an output pin. Connect the microcontroller to an LED component and observe the logic output visualisation to confirm the code’s effect.
- Add a power source and a resistor to the scope to see how the simulation represents their relationship.
- Replace the resistor with a capacitor in the scope view to notice any change in the displayed details.
04 / THE GUIDE
EEPROM Manual Entry
Open the Hex Editor, manually input a byte pattern, then use the built‑in example circuit to read the EEPROM back into the simulation, checking that the stored values match your entry.
- Turn on the wire voltage overlay when checking a circuit that includes both polarised and non‑polarised components.
- Enable dark mode while examining logic outputs to improve contrast.
05 / THE GUIDE
Multi‑Component Scope Review
Add a DC power source, a resistor, and a capacitor to the scope simultaneously. Compare the visualised details for each component to understand how the simulation distinguishes between power, resistive, and reactive elements.
- Use the single‑player mode to follow tutorial steps without interruptions.
- Log in with a different account on the same machine to let another family member launch the simulator.
