Stripboard Builder โ€“ Interactive Guide

I can...

  • Say what each of the three boards does.
  • Find key parts on a stripboard.
  • Match wires and colours to the schematic.
  • Spot and fix common wiring mistakes.

What this page is for

This page helps you build your stripboard safely and correctly. Each tab shows one part of the system. Open the sections to learn how things work and what to check.

How to use this page

  • Start with the Overview tab to learn the full system.
  • Go to Input, Process or Output when you build that board.
  • Open the dropdowns one at a time.
  • Follow the colour codes to avoid mistakes.
  • Use the photos to match your work.
  • Read the checkpoints to test your build.
  • Fix any mistakes before moving on.
  • Go back and re-check if something doesnโ€™t work.
  • Take your time โ€” small steps make better builds.

System Overview

A complete guide to understanding your three-board system.

๐Ÿ›  Build Method โ€” Universal 6-Step Stripboard Process

These six steps work for ANY stripboard project: Input โ†’ Process โ†’ Output.

Universal 6-Step Method

  1. Print the schematic and highlight inputs, outputs, and power pins.
  2. Mark the power rails.
    Red = +V (top) / Black = 0V (bottom)
  3. Place the IC first.
    Stripboard needs track cuts under each pin.
  4. Add resistors and sensors.
    Ensure correct electrical nodes.
  5. Add link wires.
    If strips donโ€™t touch โ†’ you MUST add a wire.
  6. Add LEDs and capacitors last.
    Check polarity.

Rule: Follow the schematic, not the picture.

๐ŸŽจ Stripboard Colour Code (N5 Standard)

Use a unique colour for each signal.

  • RED = +V
  • BLACK = 0V
  • Blue = TempOut
  • Green = SwitchOut
  • Yellow = AND output
  • Purple = timing node

This prevents mistakes and improves debugging speed.

๐Ÿ–ผ System Images โ€” Complete Input โ†’ Process โ†’ Output
Yenka โ€“ Full System
Input Board
Process Board
Output Board
๐Ÿงฉ System Summary โ€” What Each Board Does

Input board: generates TempOut & SwitchOut
Process board: AND gate decision
Output board: 555 astable LED flasher

Boards may look different from the schematic, but the connections must always match the diagram.

๐Ÿ”ง Troubleshooting Checklist
  • Rails continuous end-to-end?
  • All IC pins isolated?
  • Unique colour per signal?
  • Capacitor polarity correct?
  • LED polarity correct?
  • Do connections match the schematic?

If stuck โ†’ continuity-test each strip. Follow the copper, not your eyes.

๐Ÿ”„ Schematic โ†’ Stripboard Translation Rules

Understanding how a schematic becomes a physical stripboard layout is a key N5 Electronics skill.

Key Rules

  • Schematic diagrams show logical connections โ€” not physical position.
  • Every โ€œnodeโ€ in the schematic must be a single connected copper strip.
  • If the strips donโ€™t touch but the schematic shows a connection โ†’ add a link wire.
  • Track cuts isolate pins and replicate the centre gap of a breadboard.
  • Always follow IC pin numbers โ€” not the picture.

Pedagogy: This section corrects the biggest misconception: โ€œstripboard must look like the schematic pictureโ€.

๐Ÿ›  Student Task: Build Your Own Variant

Choose ONE of these challenges and design your own stripboard layout. Use the colour code, follow the build steps, and check every connection.

Design Brief Options

  • Add a second switch to create an OR input.
  • Replace the thermistor with an LDR for a light-controlled system.
  • Convert the 555 astable into a monostable circuit.
  • Add a transistor driver so the system powers a buzzer or motor.

Pedagogy: Encourages independent problem-solving and prepares learners for โ€œdesign from a briefโ€ tasks.

โš™ Advanced: Optimising Stripboard Layouts

Once your stripboard works, improve it using professional layout techniques.

Optimisation Techniques

  • Keep wires short and tidy โ€” improves debug speed.
  • Use symmetry where possible.
  • Group colours by signal type.
  • Minimise the number of track cuts.
  • Avoid loops in 0V rails.

Pedagogy: Builds skills useful for Higher Electronics and PCB design.

I can...

  • Explain what TempOut and SwitchOut do.
  • Build the thermistor and switch dividers correctly.
  • Use colour coding to follow each signal.
  • Check my work for common mistakes.

Input Board

Thermistor + Switch โ†’ Two logic signals
๐Ÿงฉ What the Input Board Does
Yenka โ€“ Input Section
Input Stripboard

The Input board creates two clean logic signals: TempOut (blue) and SwitchOut (green).

๐Ÿ”ง Components & Wiring
  • RT โ€” Thermistor
  • R1 โ€” 4.7 kฮฉ pulldown
  • R2 โ€” 10 kฮฉ pull-up
  • R3 โ€” 10 kฮฉ pulldown
  • SW1 โ€” Switch
  • +V rail โ€” top copper strip
  • 0V rail โ€” bottom copper strip

Colour coding: Blue = TempOut Green = SwitchOut Red = +V, Black = 0V

๐ŸŒก Temp & Switch Dividers

Thermistor divider

RT (to +V) and R1 (to 0V) form a voltage divider. Higher temperature โ†’ lower RT โ†’ higher TempOut.

Switch divider

  • R2 pulls SwitchOut HIGH
  • R3 pulls SwitchOut LOW
  • SW1 drives the centre pin
โœ” Build Checkpoint & Mistakes

Build Checkpoint

  • TempOut changes when the thermistor warms/cools?
  • SwitchOut clearly switches HIGH/LOW?
  • Correct divider wiring?
  • Colours not reused?

Common Mistakes

  • Thermistor wired to 0V instead of +V
  • Switch centre pin on wrong strip
  • R2/R3 swapped
  • Colours reused โ†’ impossible to trace

I can...

  • Explain what an AND gate does.
  • Find every pin on the 74HC08 correctly.
  • Wire the inputs and output using the correct colours.
  • Check for track cuts and wiring mistakes.

Process Board โ€“ AND Gate

74HC08 AND gate โ†’ combines the two inputs
๐Ÿงฉ What the Process Board Does
Yenka โ€“ AND Section
Process Stripboard

Uses a 74HC08 AND gate โ†’ only outputs HIGH when TempOut AND SwitchOut are HIGH.

๐Ÿ’  Pin Connections
  • Pin 1 = TempOut (blue)
  • Pin 2 = SwitchOut (green)
  • Pin 3 = AND Output (yellow)
  • Pin 14 = +V
  • Pin 7 = 0V

The notch marks pin 1 โ€” always face it left.

๐Ÿ”Œ Power & Links
  • Red = +V โ†’ Pin 14
  • Black = 0V โ†’ Pin 7
  • Blue = TempOut
  • Green = SwitchOut
  • Yellow = AND Output โ†’ Output board

Every IC pin must sit on an isolated strip โ†’ track cut under each pin.

โœ” Checkpoint & Mistakes

Build Checkpoint

  • Pin 1 and 2 react correctly?
  • Pin 3 only HIGH when both inputs HIGH?
  • All track cuts confirmed?

Common Mistakes

  • Pin 1/2 swapped โ†’ wrong AND behaviour
  • Missing track cut โ†’ shorts two pins
  • AND output wired to wrong strip

I can...

  • Explain how the 555 makes LEDs flash.
  • Build the timing network (R4, R5, C1).
  • Connect LEDs for HIGH and LOW output correctly.
  • Check my wiring for timing or polarity mistakes.

Output Board โ€“ 555 LED Flasher

Runs only when AND output is HIGH
๐Ÿงฉ What the Output Board Does
Yenka โ€“ Output Section
Output Stripboard

Contains a 555 astable that alternates red/green LEDs. Only runs when the AND gate output goes HIGH.

โฑ Timing Network (R4, R5, C1)
  • R4: +V โ†’ pin 7
  • R5: pin 7 โ†’ timing node (pins 2/6)
  • C1: timing node โ†’ 0V

Long leg of C1 = timing node Short leg = 0V

๐Ÿ’ก LED Connections

Green LEDs (HIGH output)

  • Pin 3 โ†’ resistor โ†’ LED โ†’ 0V

Red LEDs (LOW output)

  • +V โ†’ resistor โ†’ LED โ†’ pin 3

Blue = 555 Output

โœ” Checkpoint & Mistakes

Build Checkpoint

  • Pin 3 toggles HIGH/LOW?
  • Green LEDs on HIGH?
  • Red LEDs on LOW?
  • C1 polarity correct?

Common Mistakes

  • C1 reversed โ†’ no oscillation
  • Pins 2/6 not linked โ†’ no timing node
  • R4/R5 swapped โ†’ timing wrong
  • LEDs reversed

Final Quiz โ€“ Check Your Learning

Multiple-choice quiz with auto-marking

I can...

  • Spot wiring mistakes in a stripboard.
  • Explain what each board does.
  • Choose the correct resistor or connection.
  • Check polarity and timing components.
๐Ÿงฉ Question 1 โ€” What does the Input board create?

Choose the correct answer:




๐Ÿ”Œ Question 2 โ€” What MUST every IC pin sit on?



โฑ Question 3 โ€” What forms the timing network?



๐Ÿ’ก Question 4 โ€” Which way does an LED point when driven from pin 3 on HIGH?



๐Ÿ”ง Question 5 โ€” What colour is used for +V?



๐Ÿงฒ Question 6 โ€” What does TempOut depend on?



๐Ÿ“ Question 7 โ€” What is the job of a pulldown resistor?



๐Ÿ“˜ Question 8 โ€” What does the AND gate output when ONE input is HIGH?



๐Ÿ” Question 9 โ€” What marks pin 1 on an IC?



๐Ÿ”‹ Question 10 โ€” Where should electrolytic capacitors NOT be connected?



๐ŸŸฉ Question 11 โ€” What colour is used for TempOut?



๐ŸŸจ Question 12 โ€” What is the colour for the AND output?



โš™ Question 13 โ€” What must you always add under IC pins?



๐Ÿงฎ Question 14 โ€” What changes the flash rate of a 555?



๐Ÿ“ก Question 15 โ€” Which node must connect to pins 2 and 6?



๐Ÿงต Question 16 โ€” What do link wires do?



๐Ÿงจ Question 17 โ€” What happens if C1 is put in backwards?



๐Ÿ” Question 18 โ€” What does the Output board do when AND output is LOW?



๐Ÿงฏ Question 19 โ€” What is the most common mistake with the AND IC?



๐Ÿ“ฆ Question 20 โ€” What should you ALWAYS check last?



Score: 0