| This is for beginners and very much by a beginner.
It's intended to get an intuitive overview for hobbyist needs. It may get you started, but to be able to do anything remotely clever, follow a proper course or read a good book.
Some basics and reference:
Volts, amps, energy, power · Ground · batteries · resistors · changing voltage · transistors · fuses · diodes · varistors · capacitors · inductors · transformers · baluns · amplifier notes · frequency generation · skin effect
And some more applied stuff:
IO:
Input and output pins · wired local IO · wired local-ish IO · · Various wireless · 802.11 (WiFi) · cell phone
Sensors: General sensor notes, voltage and current sensing ·
Knobs and dials ·
Pressure sensing ·
Temperature sensing ·
humidity sensing ·
Light sensing ·
Movement sensing ·
Capacitive sensing ·
Touch screen notes
Actuators: General actuator notes, circuit protection ·
Motors and servos ·
Solenoids
Some stuff I've messed with: Avrusb500v2 ·
GPS ·
Hilo GPRS ·
JY-MCU ·
DMX ·
Thermal printer ·
Noise stuff: Stray signals and noise · sound-related noise names · electronic non-coupled noise names · electronic coupled noise · ground loop · strategies to avoid coupled noise · Sampling, reproduction, and transmission distortions
Audio notes: See avnotes
Microcontroller and computer platforms Arduino and AVR notes ·
ESP series notes ·
STM32 series notes ·
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Less sorted: Ground ·
device voltage and impedance, audio and otherwise ·
electricity and humans ·
power supply considerations ·
Common terms, useful basics, soldering ·
PLL ·
pulse modulation ·
signal reflection ·
resource metering ·
SDR ·
Project boxes ·
vacuum tubes ·
Unsorted stuff
See also Category:Electronics.
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