Component Library
CircuitBench includes boards, power sources, passive parts, inputs, sensors, outputs and instruments. Pick a category to read how each part works, how to wire it and how to control it from code.
Power & BoardsArduino Uno, ESP32 DevKit V1, Breadboard, Battery…Passive ComponentsResistor, Capacitor, Potentiometer, Diode 1N4148…Input ComponentsPushbutton, Slide switchSensorsPhotoresistor, NTC thermistor, PIR motion sensor, HC-SR04 ultrasonic…Output ComponentsLED, RGB LED, Piezo buzzer, Servo SG90…InstrumentsMultimeter
Quick reference
| Part | Job | Needs a resistor? |
|---|---|---|
| LED | Light | Yes, in series |
| Pushbutton | Input | Use INPUT_PULLUP |
| Motor | Motion | Drive via transistor + diode |
| Servo | Angle | No |
| NeoPixel | Colour | 330 Ω on data |