Component Palette Reference
Every component in de:volt’s breadboard editor — 93 catalog parts — grouped by
the same categories you see in the palette. Open the palette with the palette
icon in the left toolbar or press P, then drag a part onto the breadboard.
Each family links to its detailed page in the Parts Reference.
Breadboards
| Component | Description |
|---|---|
| Breadboard (830) | 830-point solderless breadboard with power rails. |
| Breadboard (400) | 400-point solderless breadboard with power rails. |
See Breadboards and Breadboard Mode.
Power
Power supplies and voltage regulators. A circuit’s 0 V reference is the negative terminal of a source wired to your ground rail — see Power & Signal Sources.
| Component | Description |
|---|---|
| Battery Pack | 4 × AA holder; nominally 6 V, defaults to a 5 V ideal source. |
| Bench PSU | Adjustable DC bench supply with a current limit. |
| Pulse Generator | Rectangular pulsed voltage for step / clock inputs. |
| Clock Generator | Square-wave clock output. |
| Signal Generator | Function generator: DC, sine, square, pulse, triangle, ramp, arbitrary, or noise. |
| 9 V Battery | PP3 alkaline with internal resistance modelling voltage sag. |
| CR2032 Coin Cell | 3 V lithium coin cell with high internal resistance. |
| 7805 Voltage Regulator | Fixed +5 V linear regulator (TO-220). |
| AMS1117 3.3V Regulator | Fixed +3.3 V low-dropout regulator. |
| AMS1117 5.0V Regulator | Fixed +5 V low-dropout regulator. |
| LM317 Adjustable Regulator | Adjustable positive linear regulator. |
| DC-DC Buck Converter | Step-down switching converter module. |
See Voltage Regulators and DC-DC Converters.
Passive
| Component | Description |
|---|---|
| Resistor | Ohmic resistor (configurable resistance). |
| Capacitor | Ideal capacitor; style selects ceramic / electrolytic / film. |
| Diode | Silicon rectifier diode (1N4001-style). |
| Zener Diode | Voltage regulation via reverse breakdown. |
| TVS Diode | Transient voltage suppressor; clamps fast spikes. |
| Schottky Diode | Low forward-voltage-drop barrier diode. |
| Inductor | Ideal inductor. |
| Potentiometer | 3-terminal variable resistor, linear or log taper. |
| Trimmer | PCB-mount screwdriver-adjusted variable resistor. |
| Fuse | One-shot overcurrent protection fuse. |
| PTC Resettable Fuse | Self-resetting overcurrent fuse. |
| LDR | Light-dependent resistor; resistance falls with light. |
| Thermistor (NTC) | Resistance falls as temperature rises. |
| Ferrite Bead | HF noise suppressor (modelled as a small series resistance). |
| Resistor Array | Four isolated resistors in a DIP-8 package. |
| Ceramic Capacitor | Small non-polarised MLCC; default 100 nF for decoupling. |
| Electrolytic Capacitor | Polarised, large value; default 100 µF for bulk filtering. |
| Film Capacitor | Non-polarised, stable; default 1 µF. |
See Passives (R, L, C), Diodes, Sensors, Protection Parts, and Arrays & Switches.
Active
| Component | Description |
|---|---|
| NPN Transistor | Generic NPN BJT (Ebers-Moll transport model). |
| PNP Transistor | Generic PNP BJT (Ebers-Moll transport model). |
| N-Channel MOSFET | Generic enhancement NMOS (Shichman-Hodges level 1). |
| P-Channel MOSFET | Generic enhancement PMOS (Shichman-Hodges level 1). |
Analog ICs
| Component | Description |
|---|---|
| LM358 | Dual general-purpose op-amp (single-supply, DIP-8). |
| MCP6002 | Dual rail-to-rail op-amp (1.8–6 V, DIP-8). |
| LM386 | Audio power amplifier (4–12 V, DIP-8). |
| LM393 | Dual open-collector comparator (DIP-8). |
| TL431 | Programmable precision shunt voltage reference (TO-92). |
See Op-Amps and Comparators & References.
Logic ICs
| Component | Description |
|---|---|
| NE555 Timer | Astable / monostable timer. |
| 74LS00 | Quad 2-input NAND gate. |
| 74LS04 | Hex inverter. |
| 74LS08 | Quad 2-input AND gate. |
| 74LS32 | Quad 2-input OR gate. |
| 74LS86 | Quad 2-input XOR gate. |
| 74LS161 | 4-bit synchronous binary counter (async clear). |
| 74LS173 | 4-bit D register with 3-state outputs. |
| 74LS189 | 64-bit (16×4) static RAM, inverted outputs. |
| 74LS157 | Quad 2:1 multiplexer. |
| 74LS283 | 4-bit binary full adder with fast carry. |
| 74LS245 | Octal 3-state bus transceiver. |
| 74HC595 | 8-bit serial-in, parallel-out shift register. |
| 74HC165 | 8-bit parallel-in, serial-out shift register. |
| 74HC14 | Hex Schmitt-trigger inverter. |
| 74HC138 | 3-to-8 line decoder / demultiplexer. |
| 74LS47 | BCD-to-7-segment decoder (open-collector). |
| 74HC74 | Dual D flip-flop with preset and clear. |
| CD4017 | Decade counter with 10 decoded outputs. |
| CD4511 | BCD-to-7-segment latch / decoder / driver. |
| CD4060 | 14-stage ripple counter with oscillator. |
| 28C16 | 2K×8 EEPROM. |
| 28C256 | 32K×8 EEPROM. |
See Logic ICs, 555 Timer, and Memory & EEPROM.
Microcontrollers
| Component | Description |
|---|---|
| Arduino Uno | ATmega328P board; upload a compiled .hex sketch. |
| Arduino Nano | ATmega328P on a breadboard-friendly 30-pin board. |
See Arduino Uno, Arduino Nano, and Writing Arduino Sketches.
Drivers
| Component | Description |
|---|---|
| ULN2003A | 7-channel Darlington sink array. |
| ULN2803A | 8-channel Darlington sink array. |
| L293D Dual H-Bridge | Drives two DC motors bidirectionally. |
| TB6612FNG Dual H-Bridge | Dual full-H-bridge motor driver module. |
See Motor Drivers.
Displays
| Component | Description |
|---|---|
| MAX7219 8x8 LED Matrix | SPI-controlled 8×8 LED matrix driver module. |
| HD44780 16x2 LCD | 16×2 character LCD module. |
See Displays.
Electromechanical
| Component | Description |
|---|---|
| 5 V SPDT Relay | Coil-actuated single-pole double-throw relay. |
See Relays.
Outputs
| Component | Description |
|---|---|
| Red LED | Vf ≈ 1.8 V. |
| Green LED | Vf ≈ 2.0 V. |
| Blue LED | Vf ≈ 3.0 V. |
| White LED | Vf ≈ 3.2 V. |
| Yellow LED | Vf ≈ 2.1 V. |
| Amber LED | Vf ≈ 2.0 V. |
| Bicolour LED | Red + green dice sharing a common cathode. |
| RGB LED | Three channels, common cathode. |
| 7-Seg (CC) | Single-digit 7-segment display, common cathode. |
| 7-Seg (CA) | Single-digit 7-segment display, common anode. |
| Active Buzzer | Self-oscillating buzzer; tone on DC. |
| Passive Buzzer | Driven by an AC / PWM signal. |
| 8 Ohm Speaker | Small permanent-magnet speaker. |
| DC Motor | Brushed DC motor (R+L winding model). |
| Hobby Servo (SG90) | PWM position actuator. |
| Bipolar Stepper Motor (NEMA 17) | 4-wire two-coil stepper. |
See LEDs, RGB LED, 7-Segment Displays, Buzzers & Speakers, and Motors.
Inputs
| Component | Description |
|---|---|
| Switch (SPST) | Single-pole single-throw toggle. |
| Push Button | Momentary; closes while held. |
| SPDT Switch | Single-pole double-throw; routes COM to B or C. |
| DIP Switch | 2–8 independent SPST positions in one package. |
See Switches & Buttons and Arrays & Switches.
Probing signals
There is no separate “probe” part — to graph a node, open the oscilloscope and tick the nets you want to plot. Component voltages, currents, and parameters also appear live in the Inspector when you select a part.