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Electronics

From basic circuits to ESP32 capstone. 21 lessons, 6 phases — learn by doing.

Glossary → · Start at lesson 1 →
Phase 0

The Promise + Safety

  1. 🗺️ #0 Course Map What You'll Build
  2. ⚠️ #1 Safety & Tools ESD, LiPo Hazards, Multimeter Basics
Phase 1

DC Circuits

  1. ⚡ #2 Ohm's Law + Power V = I × R, P = V × I
  2. 🔗 #3 Series/Parallel + Voltage Divider Resistor Combinations
  3. 🌍 #4 Ground, References, and Measurement Gotchas Why 'Ground' Is Not Magic
Phase 2

Components

  1. 🔋 #5 Capacitors + RC Time Constant Charging, Filtering, Timing
  2. 💡 #6 Diodes + LEDs Current Limiting, Polarity, Brightness
  3. 🔀 #7 Transistors/MOSFETs as Switches Why GPIO Can't Drive Everything
Phase 3

Microcontrollers

  1. 🔘 #8 GPIO Inputs Floating, Pull-ups, Debouncing
  2. 📶 #9 Timers + PWM LEDC: Duty, Frequency, Resolution
  3. 📊 #10 ADC Reading Quantization, Noise, Averaging
  4. 🔗 #11 I²C Communication Addressing, ACK/NAK, Clock Stretching
  5. 📡 #12 UART Logging + Debugging Serial Communication Workflow
  6. ⚡ #13 5V vs 3.3V Logic + Level Shifting ESP32 Rules of Engagement
Phase 4

ESP32 Deep Dive

  1. 📌 #14 ESP32 Pins: Strapping Pins, Input-Only, Boot Traps Pin Configuration Gotchas
  2. 😴 #15 Deep Sleep: Wake Sources, State, RTC Memory Power Optimization
Phase 5

Capstone

  1. 🌡️ #16 Sensor Selection + I²C Wiring SHT31/BME280 Integration
  2. 🏗️ #17 Firmware Architecture Task Loop, State Machine, Error Budget
  3. 📶 #18 Wi‑Fi Transmit Strategy Batching, Retries, Timeouts, Security
  4. 🔋 #19 Power Budget + Measurement Calculating Battery Lifetime
  5. 🚀 #20 Validation + Enclosure + Ship It Final Checklist