Start Here

Welcome to FluxBench, your engineering workbench for hardware and firmware builders.

Roadmap

Your journey through hardware engineering follows a clear path:

1. Learn - Master the fundamentals: Voltage

   Voltage

   concept

   The electrical potential difference between two points, measured in volts (V). It's the "pressure" that pushes electric charge through a circuit.

   , Current

   Current

   concept

   The flow of electric charge through a conductor, measured in amperes (A). It's the rate at which electrons move through a circuit.

   , Resistance

   Resistance

   concept

   The opposition to the flow of electric current, measured in ohms (Ω). It's the property that limits current in a circuit.

   , and how components work
2. Lab - Build circuits on a Breadboard

   Breadboard

   tool

   A reusable prototyping board with interconnected holes for building circuits without soldering. Allows quick component connections.

   , measure with a Multimeter

   Multimeter

   tool

   A measuring instrument that can measure voltage, current, and resistance. Essential tool for debugging and testing circuits.

   , and understand real-world behavior
3. Build - Create permanent projects using Soldering

   Soldering

   process

   The process of joining electronic components to a circuit board using molten metal (solder). Creates permanent electrical connections.

   and proper circuit design

Beginner Kit Essentials

To get started, you'll need these fundamental components:

• Resistor

  Resistor

  component

  A passive electronic component that limits current flow by providing electrical resistance. Measured in ohms (Ω).

  s - Start with 220Ω, 1kΩ, 10kΩ values
• LED

  LED

  component

  Light Emitting Diode - a semiconductor device that emits light when current flows through it. Requires a current-limiting resistor.

  s - Red, green, and blue for color mixing experiments
• Breadboard

  Breadboard

  tool

  A reusable prototyping board with interconnected holes for building circuits without soldering. Allows quick component connections.

  - For prototyping without Soldering

  Soldering

  process

  The process of joining electronic components to a circuit board using molten metal (solder). Creates permanent electrical connections.

• Multimeter

  Multimeter

  tool

  A measuring instrument that can measure voltage, current, and resistance. Essential tool for debugging and testing circuits.

  - Essential for measuring Voltage

  Voltage

  concept

  The electrical potential difference between two points, measured in volts (V). It's the "pressure" that pushes electric charge through a circuit.

  , Current

  Current

  concept

  The flow of electric charge through a conductor, measured in amperes (A). It's the rate at which electrons move through a circuit.

  , and Resistance

  Resistance

  concept

  The opposition to the flow of electric current, measured in ohms (Ω). It's the property that limits current in a circuit.

• Jumper wires - For making connections
• Power supply - 5V USB or battery pack

For detailed product recommendations and buying guides, see My Recommendations.

First 5 Circuits

Start with these fundamental circuits to build your understanding:

1. Simple LED Circuit - Connect an LED

   LED

   component

   Light Emitting Diode - a semiconductor device that emits light when current flows through it. Requires a current-limiting resistor.

   with a Resistor

   Resistor

   component

   A passive electronic component that limits current flow by providing electrical resistance. Measured in ohms (Ω).

   . Use the LED Series Resistor Calculator to find the right Resistor

   Resistor

   component

   A passive electronic component that limits current flow by providing electrical resistance. Measured in ohms (Ω).

   value.
2. Voltage Divider - Use two Resistor

   Resistor

   component

   A passive electronic component that limits current flow by providing electrical resistance. Measured in ohms (Ω).

   s to create a reference Voltage

   Voltage

   concept

   The electrical potential difference between two points, measured in volts (V). It's the "pressure" that pushes electric charge through a circuit.

   . Calculate with Ohm's Law.
3. LED Blinker - Add a Capacitor

   Capacitor

   component

   A passive component that stores electrical energy in an electric field. Measured in farads (F), commonly microfarads (µF).

   to create a simple timing circuit that blinks an LED

   LED

   component

   Light Emitting Diode - a semiconductor device that emits light when current flows through it. Requires a current-limiting resistor.

   .
4. Pull-up Resistor - Use a Pull-up Resistor

   Pull-up Resistor

   component

   A resistor connected between a signal line and power supply voltage to ensure a defined high state when no other device drives the line.

   with a button to read digital input.
5. Series and Parallel LEDs - Learn how Voltage

   Voltage

   concept

   The electrical potential difference between two points, measured in volts (V). It's the "pressure" that pushes electric charge through a circuit.

   and Current

   Current

   concept

   The flow of electric charge through a conductor, measured in amperes (A). It's the rate at which electrons move through a circuit.

   behave in different configurations.

Explore Components

Learn about essential components:

• Resistors - Limit Current

  Current

  concept

  The flow of electric charge through a conductor, measured in amperes (A). It's the rate at which electrons move through a circuit.

  and create Voltage

  Voltage

  concept

  The electrical potential difference between two points, measured in volts (V). It's the "pressure" that pushes electric charge through a circuit.

  dividers
• LEDs - Light-emitting diodes for indicators and displays

Useful Tools

Calculators and simulators to help you design circuits:

• Ohm's Law Calculator - Calculate Voltage

  Voltage

  concept

  The electrical potential difference between two points, measured in volts (V). It's the "pressure" that pushes electric charge through a circuit.

  , Current

  Current

  concept

  The flow of electric charge through a conductor, measured in amperes (A). It's the rate at which electrons move through a circuit.

  , or Resistance

  Resistance

  concept

  The opposition to the flow of electric current, measured in ohms (Ω). It's the property that limits current in a circuit.

• LED Series Resistor Calculator - Find the right Resistor

  Resistor

  component

  A passive electronic component that limits current flow by providing electrical resistance. Measured in ohms (Ω).

  for your LED

  LED

  component

  Light Emitting Diode - a semiconductor device that emits light when current flows through it. Requires a current-limiting resistor.

Gear

Looking for equipment recommendations? Check out Gear for curated lists of tools, boards, and accessories with reviews and tips.

Reference

Need to look up a term? Check the Glossary for definitions of Voltage

, Current

Current

concept

The flow of electric charge through a conductor, measured in amperes (A). It's the rate at which electrons move through a circuit.

, Resistance

Resistance

concept

The opposition to the flow of electric current, measured in ohms (Ω). It's the property that limits current in a circuit.

, Power

Power

concept

The rate at which electrical energy is transferred, measured in watts (W). Calculated as P = V × I (voltage times current).

, and more.