⚠ This is for beginners and very much by a beginner / hobbyist
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 · batteries · resistors · transistors · fuses · diodes ·
capacitors · inductors and transformers ·
ground
Slightly less basic: amplifier notes · varistors ·
changing voltage · baluns ·
frequency generation ·
Transmission lines · 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
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 and video notes: See avnotes
Platform specific
- Arduino and AVR notes · (Ethernet)
- Microcontroller and computer platforms ··· ESP series notes · STM32 series notes
Less sorted: Ground ·
device voltage and impedance (+ audio-specific) · electricity and humans ·
Common terms, useful basics, soldering ·
landline phones ·
pulse modulation ·
PLL ·
Multimeter notes ·
signal reflection ·
Project boxes ·
resource metering ·
Radio and SDR ·
vacuum tubes ·
Unsorted stuff ·
'E-fuse'
Some stuff I've messed with: Avrusb500v2 ·
GPS ·
Hilo GPRS ·
JY-MCU ·
DMX ·
Thermal printer ·
See also Category:Electronics.
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"JY-MEGA16/32"
This is a vaguely arduino-like board, but with some buttons and leds already there, making some basic interfaces a little less work.
(I have a DEMO V1.2, but different versions are probably equivalent)
Mostly consists of:
- 17x2 pins exposing Vcc, Gnd, and all 32 pins on ports A,B,C,D
- ISP header
- JTAG header
- 1 power LED
- 8 LEDs (on port B)
- 5 buttons
- one of which is reset
- the other four are (on which port?)
- USB mini-B socket
- Useful for 5V power
- Apparently the controller comes with a bootloader that implements USB HID device, so you can upload
- press S4 on reset?(verify))
- Attached to which pins?
- (I didn't know this and program without bootloader using ISP)
"JY-LKM1638"
Board with
- a TM1638 (LED driver and keypad scan interface), with a bidirectional serial interface
- eight 7-segment characters
- eight (dual color?) LEDs
- eight buttons
Has a header to make it chainable with more of the same