LIVE · 231 LESSONS · 22 SERIES · 100% FREE
Learn electronics in 30-second lessons
Short, clear video lessons for total beginners — from your first LED to Embedded C. Watch one on the bus, understand it for life.
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Start here: total beginner path
Watch these 9 in order. No maths, no experience needed.
01
EP.01 · LED Series · 1What actually happens when you turn ON an LED?
02
EP.02 · LED Series · 2Why does an LED burn without a resistor?
03
EP.09 · Electronics Basics · 1Why does a resistor resist current?
04
EP.15 · Electronics Basics · 4AC vs DC
05
EP.13 · Maths for Electronics · 3Series vs parallel resistors
06
EP.04 · Microcontrollers · 1Microcontroller vs Microprocessor
07
EP.03 · LED Series · 35 lines of C++ → a real LED turns ON
08
EP.05 · LED Series · 4Make it BLINK
09
EP.10 · LED Series · 6Control it with a BUTTON
// NEW · FREE VIDEO COURSES
Go deeper: free 3-minute episodes
FREE · COURSE E
Everyone · history · 2 of 4 episodes · 5 min
Ideas That Built Your Phone: the Golden Age of Science4 history episodes (normal history, for everyone): scientists of Baghdad, Cairo and Central Asia whose ideas still run today's tech. Long versions of the Golden Age Shorts.
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FREE · COURSE C
Beginner · hands-on · 4 of 4 episodes · 11 min
Multimeter Masterclass4 episodes: the dial, voltage (battery + mains safely), resistance + continuity, current and the fuse that saves you.
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FREE · COURSE B
Beginner · 5 of 5 episodes · 14 min
Arduino: Zero to First Project5 episodes from unboxing the board to a working automatic night light.
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// PLAY · LEARN · NO KIT NEEDED
Play with electronics
14 INTERACTIVE LABSComponent LabMultimeter, logic gates, LEDs, PWM and more — move a slider, see the circuit react.Enter →74 QUESTIONS · 6 QUIZZESQuiz Lab3 levels, 3 themed quizzes, a Daily 5 with streaks and a 60-second Lightning Round.Enter →5 BRAIN GAMESArcadeLight It Up, Gate Lock, Binary Blitz, Resistor Memory, Simon LED.Enter →
⚡ TODAYDaily 5 — five new questions every dayPlay →
// GUIDES · CALCULATORS · FORMULAS
Free electronics guides
Circuits · 4 min readAC vs DC: What's the Difference? (And How Chargers Turn AC Into DC)AC vs DC in plain English: what each one is, 50 Hz vs 60 Hz, why homes use AC and phones use DC, and how a diode bridge turns AC into DC.Read the guide →
Home energy · 5 min readAppliance Power Consumption Chart: How Many Watts Does an AC, Fridge or TV Use?How many watts does an AC, fridge, TV, fan, laptop or water heater use? A clear wattage chart with real kWh per month for 30+ home appliances.Read the guide →
Digital & Arduino · 3 min readBinary to Hex (and Decimal) Conversion Made Easy: 8-Bit GuideConvert binary to decimal and hex in seconds: place values, the nibble trick, a 0–F table and examples like 0x20 = 32. Free bit flipper.Read the guide →// FRESH FROM THE LAB
Latest lessons
EP.231 · Everyday Tech · 7Everyday Tech Part 7 — how tap-to-pay works (NFC)
EP.230 · Why does…?Why does…? #22 — why an electric car still has a small 12 V battery
EP.229 · Tech StoryTech Story #13 · Golden Age G6: al-Kindi — the first codebreaker
EP.228 · PCB Design with KiCad · 8PCB Design with KiCad Part 8: place parts like a pro
EP.227 · QuizQuiz #21: which one is the LED symbol? → B, arrows out
EP.226 · Chips · 7Chips Part 7: what is an NPU? The AI part of your phone chip
HALF TRUE
EP.225 · Myth or FactMyth or Fact #21: "Dark mode saves battery on every phone" → HALF TRUE
EP.224 · Explained SimplyExplained Simply #16: how do wireless earbuds talk to your phone?
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LED SeriesFrom what an LED is to controlling it with code, one 20-second lesson at a time.
14 of 15 lessons out
Mini-course
Arduino C++ SeriesThe C++ you actually need for Arduino, one idea per reel.
11 of 12 lessons out
Mini-course
Electronics BasicsResistors, dividers and the laws behind every circuit.
14 of 15 lessons out
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