Pure Electronics

• Top 20 electronic components

  Professor Petabyte’s Top 20 Electronic Components every builder should understand — a fast track to hardware mastery.
• Resistors

  Explore how resistors control current, divide voltages, and shape signals in every electronic circuit.
• Shift Registers

  Learn how shift registers expand outputs, drive LEDs, and simplify microcontroller wiring.
• Integrated Circuits

  An introduction to the tiny silicon blocks that power modern computation, switching, and control.
• SSD1306 Displays

  A guide to the popular monochrome OLED modules used in embedded and IoT projects.
• Float Switches

  Detect liquid levels easily using inexpensive, reliable mechanical float switches.
• Infrared Control

  Control electronics wirelessly using simple and robust infrared signalling techniques.
• Keypads

  Add user input to projects with matrix keypads and efficient scanning methods.
• MOSFETs

  Discover why MOSFETs are the transistor of choice for switching and power control.
• Relays

  Use small control signals to switch large loads with electromechanical relays.
• Moisture Sensors

  Measure soil hydration using basic conductivity probes and improve garden automation.
• Capacitors

  Understand how capacitors store energy, filter noise, smooth power, and more.
• GPS - Global Positioning System

  Learn how GPS receivers compute position, time, and velocity from satellite signals.
• Thermostats

  Explore mechanisms that regulate temperature in appliances and control systems.
• Transformers

  How coils and magnetic fields transfer energy, step voltages, and isolate circuits.

Productivity

• Artificial Intelligence

  An approachable explanation of modern AI, machine learning, and practical applications.
• FTP - File Transfer Protocol

  A classic network protocol for transferring files between computers and servers.
• Soldering

  Techniques for creating strong, reliable joints in electronic assemblies.

Microcontrollers

• Raspberry Pi Pico Power Pins

  A guide to powering the Pico safely from USB, VSYS, and regulated supplies.
• Raspberry Pi Pico GPIO Pins

  Complete overview of the Pico's versatile digital, analog, and special-function pins.
• BatteryPoweredPicos

  Power your Pico from batteries safely and efficiently using regulators and boost circuits.

Software

• Assembly Language

  A gentle introduction to low-level programming and ARM instruction basics.
• SQL Multiple Combination Aggregates

  Learn advanced SQL aggregation patterns for complex reporting and analysis.
• MQTT - Message Queuing Telemetry Transport

  A lightweight messaging protocol ideal for IoT devices and distributed systems.
• C++ Basics

  A clear beginner-friendly introduction to variables, functions, objects, and memory.
• Using SQLite with C++

  Learn how to embed a fast, portable SQL database in C++ applications.
• Pico Interrupts Using C

  Handle hardware events efficiently on the Pico using C-based interrupt handlers.

Odds & Ends

All the stuff that doesn't quite fit into the other sections...

• General Q&A

  A collection of common tech questions and concise, clear answers.
• Robots

  Explore robotics fundamentals, motion control, and autonomous behaviour.
• Parallel Printers

  Discover how classic parallel printers worked and how to interface with them.
• Common Communications Acronyms

  Decode the alphabet soup of networking and telecom abbreviations.