examples
Lever Simple Machine
A lever pivots on a fulcrum to multiply force
Category
Engineering
Design, systems, infrastructure, manufacturing, and applied problem solving.
examples
Renewable Resource
Renewable resources regenerate naturally on human timescales
guides
Basic Circuit Building
Learn series/parallel wiring and measurement
guides
Intro to CAD Modeling
Basic CAD steps for simple parts
guides
Rapid Prototyping Workflows
Combine sketches, CAD, and fabrication for fast feedback
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Reliability Engineering Basics
Plan for failures and measure reliability
guides
Soldering 101
Basics of tools, technique, and safety
how-it-works
Air Traffic Control
Air traffic control coordinates aircraft movements to maintain safe separation
how-it-works
3D Printing
3D printers build objects by depositing or curing material layer by layer
how-it-works
Wastewater Treatment
Treatment plants remove contaminants from sewage before discharge or reuse
why-important
Supply Chain Visibility
Visibility provides real-time status of materials and products
guides
Disaster Recovery Plan Basics
Outline critical services, RTO/RPO targets, backups, and runbooks for outages.
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Electric Vehicle Charging Basics
Understand charging levels, connector types, and how to plan reliable charging at home and public stations.
guides
Rainwater Harvesting Basics
Install gutters, a barrel, and basic filtration to capture and use rainwater safely for non-potable tasks.
guides
Solar Battery Backup Basics
Outline the parts, sizing steps, and safety tips for a starter solar battery backup system.
guides
API Authentication Modes Basics
Choose between API keys, OAuth, and mutual TLS, and enforce them consistently.
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API Circuit Breaker Basics
Use circuit breakers to prevent cascading failures and improve resilience.
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API Deprecation Basics
Announce changes early, provide timelines, and offer migration guides.
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API Error Handling Basics
Use standard status codes, concise messages, and trace IDs for clients to debug easily.
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API Gateway Basics
Use an API gateway for routing, auth, rate limits, and observability.
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API Key Rotation Basics
Issue new keys, update clients, and revoke old keys after cutover.
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API Logging Basics
Log requests and errors with context, avoid PII, and ship to centralized storage.
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API Monitoring Basics
Track availability, latency, errors, and key user flows with active checks and alerts.
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API Pagination Troubleshooting Basics
Diagnose missing pages, duplicates, and cursor problems in paginated APIs.
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API Schema Versioning Basics
Manage API schema changes with versioning, compatibility, and documentation.
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API Security Checklist Basics
Review auth, input validation, logging, and secrets to reduce common API risks.
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API Testing Basics
Cover unit, contract, and integration checks with fixtures and environments.
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Backup Verification Basics
Schedule test restores, checksum files, and track results to trust backups.
guides
Basic Control Systems Basics
Learn how sensors, controllers, and actuators use feedback to keep systems stable.
guides
Beginner 3D Printing Basics
Pick a printer, slice models, and start safe prints with PLA.
guides
Beginner Electronics Multimeter Basics
Learn basic multimeter modes and safe measurement habits for electronics work.
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Browser Performance Profiling Basics
Use browser devtools to find layout shifts, long tasks, and heavy assets.
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Browser Testing Matrix Basics
Define browsers, devices, and scenarios to test web apps efficiently.
guides
Container Image Hardening Basics
Use small base images, pin versions, scan for CVEs, and drop privileges.
guides
Diesel Generator Safety Basics
Place generators outdoors, manage cords correctly, and maintain properly.
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DIY Insulation Check Basics
Spot drafts and thin insulation with simple tools before planning upgrades.
guides
Electrical Load Calculation Basics
Add up branch circuits and major appliances to estimate panel load and capacity.
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Feature Flag Governance Basics
Set naming, ownership, and cleanup rules for feature flags.
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Feature Flag Rollout Basics
Use flags to stage releases, collect feedback, and fail safely.
guides
Garage Door Maintenance Basics
Lubricate moving parts, test safety sensors, and balance the door periodically.
guides
Generator Load Management Basics
Calculate loads, stagger high-draw devices, and avoid overloading generators.
guides
Gutter Guard Selection Basics
Pick guards suited to your debris type and roof, and plan cleaning access.
guides
Heat Pump Thermostat Settings Basics
Use steady setpoints, avoid big setbacks, and understand auxiliary heat behavior.
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Hoisting Sling Safety Basics
Inspect, rate, rig, and lift with slings safely to avoid failures.
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Home EV Charger Maintenance Basics
Inspect cables, update firmware, and check breakers to keep home EV charging smooth.
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Home EV Load Balancing Basics
Use load management or scheduling to avoid tripping breakers when charging at home.
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Home Inverter Basics
Match inverter type and size to loads, wire safely, and monitor use.
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Incident Severity Matrix Basics
Create a severity matrix that links impact to response expectations.
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K8s Deployment Basics
Use manifests or Helm, set readiness probes, and roll out gradually.
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Load Paths Basics
Trace how forces move from where they act to the ground through structural elements.
guides
Network Port Scanning Basics
Use port scans ethically to inventory services and find exposure.
guides
PCB Soldering Basics
Prepare tools, tin the tip, and solder through-hole or SMD components safely.
guides
Portable Power Station Basics
Size capacity, manage loads, and charge safely for portable power stations.
guides
Post-Release Monitoring Basics
Track key metrics and alerts immediately after releases to catch issues early.
guides
Rainwater Tank Maintenance Basics
Inspect screens, flush sediment, and keep overflows clear for clean stored water.
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Release Notes Basics
Summarize changes, impacts, and actions clearly for users.
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Root Cause Analysis Basics
Collect evidence, map contributing factors, and define actions after incidents.
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Runbook Creation Basics
Document concise steps, signals, and decision points for operations tasks.
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Sandbox Environment Basics
Set up sandbox environments for testing without risking production data.
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Service Level Objectives Basics
Define SLOs, measure SLIs, and use error budgets for decisions.
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Solar Panel Cleaning Basics
Clean panels safely with proper tools and timing to maintain energy output.
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SQLite Backup Basics
Use online backup API or file copies with locks to protect SQLite data.
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SSH Bastion Setup Basics
Centralize SSH access through a bastion with short-lived keys and logging.
guides
SSH Key Setup Basics
Generate, protect, and use SSH keys with passphrases and agents.
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Storm Window Install Basics
Measure, seal, and fasten storm windows to cut drafts and noise.
guides
Team Incident Drill Basics
Plan small tabletop or live drills, rotate roles, and capture learnings to improve resilience.
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Torque Wrench Usage Basics
Set, use, and store torque wrenches correctly for reliable fastening.
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Battery Safety
Prevent battery hazards with proper handling and storage.
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Electronics Troubleshooting
Use structured steps to diagnose and fix electronics issues safely.
guides
Fluid Dynamics Basics
Understand how fluids move, resist, and create forces.
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Materials Selection
Choose materials balancing strength, cost, and environment.
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Basic Circuit Building
Building basic circuits involves safe power, correct polarity, and measuring with a multimeter.
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Basic Electronics Meters
Learn voltage, current, and continuity checks with a multimeter.
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Basic Hydraulics
Hydraulics use incompressible fluids to transmit force.
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Basic Hydraulics
Hydraulics use incompressible fluids to transmit force.
guides
Battery Safety Basics
Battery safety means correct chargers, avoiding damage, and proper storage/disposal.
guides
Energy Audit: Home Basics
A home energy audit checks air leaks, insulation, and HVAC efficiency to cut bills and drafts.
guides
FMEA Basics
Failure Modes and Effects Analysis scores severity, occurrence, and detection to prioritize risks.
guides
Gear Ratios Basics
Gear ratios trade speed for torque between rotating parts.
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Gear Ratios Basics
Gear ratios trade speed for torque between rotating parts.
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Heat Pump Basics
Heat pumps move heat instead of generating it, offering efficient heating and cooling.
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Home Insulation Basics
Insulation slows heat flow; priority areas are attics, walls, and sealing leaks.
guides
Ohm's Law Basics
Ohm?s law states V = I ? R, relating voltage, current, and resistance.