Circuits / Getting started
Button with a pull-down resistor
Released, R1 holds the output at ground (LED off); pressed, S1 takes it to the supply (LED on)

Tap a part to see its voltages and currents. It is a model, not a measurement.
Parts
- Push buttonSearch on Amazon
- Resistor 10 kΩSearch on Amazon
- Resistor 330 ΩSearch on Amazon
- Green LEDSearch on Amazon
- Jumper wires × 2Search on Amazon
- BreadboardSearch on Amazon
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One email when a new circuit is out, about twice a month. Nothing else.