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7 calculators
58 guides
Perfboard basics
- What Is Perfboard? Types and How to Choose
- Perfboard Soldering Basics: Temperature, Order, and Avoiding Cold Joints
- Reading a Layout Diagram: Component Side, Copper Side, Coordinates, and Pin Numbers
- How to Draw a Perfboard Layout: Placing Parts, Wiring, and Jumpers Step by Step
- Moving a Schematic onto Perfboard in 7 Steps
- Wiring Methods Compared: Jumper Wires, Solder Bridges, and Insulated Wire
- Power Rails, Grounding, and Decoupling Capacitor Placement
Understanding parts
- Reading Resistors: Color Codes and Standard Values (E24)
- LED Current-Limiting Resistors and Brightness Control
- Capacitor Types, Polarity, and Reading Values
- How to Use Diodes and Zener Diodes
- Transistor Switch Circuits and Pinout Pitfalls
- Reading DIP IC Pin Numbers and Using IC Sockets
- Driving Seven-Segment (FND) Displays: Common Cathode vs. Common Anode
- Potentiometers: How to Use Them and the Types
Circuit design & debugging
- Designing Voltage Dividers and the Loading Effect
- Tact Switches and Pull-Up/Pull-Down Resistors
- Blinking an LED with a 555 Timer: Astable Circuit Design
- 555 Timer Monostable Circuit: Turn On for a Fixed Time When a Button Is Pressed
- Understanding RC Time Constants and Capacitor Charging
- Building a Voltage Comparator with the LM358, and Hysteresis
- 74LS and 74HC Logic Gate Basics and Handling Unused Inputs
- It Is Finished but It Does Not Work: A Step-by-Step Checklist
Project examples
- An LED Flasher with Two Transistors (Astable Multivibrator)
- A 0–9 Digit Counter with a 74LS90, 74LS47, and Seven-Segment Display
- A Seven-Segment Display Selected with a DIP Switch
- Making 5V from a 9V Battery: Building a 7805 Power Board
- Building a USB 5V Power Board: Connector, Fuse, and Bypass Capacitors
Equipment & buying guides
- How to Choose a Soldering Iron: Temperature Control, Wattage, and Tip Shape
- How to Choose a Multimeter and Basic Measurement Order
- Choosing Solder and Flux: Leaded vs. Lead-Free, Thickness, and Storage
- Choosing a Bench Power Supply: Current Limiting Is the Key
- Oscilloscope Basics: When You Need One and What to Look At
- What Every Electronics Starter Parts Kit Should Include
- Breadboard vs. Perfboard vs. PCB, and Choosing by Stage
- Desoldering and Rework: Using Solder Wick and a Solder Sucker
- Soldering Safety: Ventilation, Burns, Protective Gear, and Handling Lead
- Electronic Parts Buying Guide: Checking Specs and Finding Substitutes
- From Perfboard to a Custom PCB: Gerber Files and Choosing Specs
- Perfboard Layout Tools Compared: Graph Paper, Excel, DIYLC, and Patterndo
- Free Circuit Design Software Compared: KiCad, EasyEDA, and Fritzing
Microcontrollers
- Arduino Uno vs. ESP32 vs. Raspberry Pi Pico, and How to Choose
- Mounting a Development Board on Perfboard: Header Sockets and Power Separation
- Connecting 3.3V and 5V Signals: Level Shifting Methods
- I2C Wiring Basics: Pull-Up Values, Addresses, and What to Check When It Fails
- Driving Motors, Relays, and Solenoids: Transistors and Flyback Diodes
Study roadmap
- A Self-Study Roadmap for Electronics: What to Learn and in What Order
- How to Read a Datasheet: From Pinout to Absolute Maximum Ratings
- Reading Schematic Symbols: Common Symbols and Connection Notation
- The 10 Mistakes Electronics Beginners Make Most Often
Using Patterndo
- Getting Started with Patterndo: Build an LED Circuit
- Using the 2D and 3D Views and Flipping Between Component and Copper Side
- Patterndo Keyboard Shortcuts: Work Faster with Left-Hand Tool Keys
- Using Patterndo Simulation: Turning It On and Reading the Results
- Reading Diagnostics (DRC) Messages and Fixing Them
- Using Auto-Rewire: When to Use It and How to Review the Result
- Importing a Schematic or Netlist and Using the Ratsnest
- Saving, Sharing, and Backing Up Boards: URL, Share Link, and RAW JSON