Acknowledge clock cycle
alsamixer
alsa-utils
Analog to digital (ADC)
extended voltage range
sampling rate
V OA
aplay
Backlighting
Battery
Blanking
reduced
Breadboard
Buttons
Capacitor
CD4001
CD4049
CD4050
CD4012B
CD4050BC
CD4049UBC
Chip enable
Complementary metal oxide semiconductor (CMOS)
BroadCom
floating
gate
high level
logic levels
low level
unused inputs
config.txt file
Consumer Electronics Association (CEA)
Conventional current flow
Debouncing
buttons
hardware
MC14490
relays
software
switches
Digital multi-meter (DMM)
Digital to analog converter (DAC)
AOUT
Diodes
1N914
protection
zener
Diode transistor logic (DTL)
Display Monitoring Timing (DMT) standard
Dual inline package (DIP)
Dupont wires
Embedded system
Raspberry Pi
Extended display identification data (EDID)
fbset
Field effect transistor (FET)
gate
oxide
Flea market
hamfest
General purpose input/output (GPIO)
expansion
gnuplot
Hamfest
flea market
74HC165
74HC595
74HCT244
74HCT245
hdmi_force_hotplug
hdmi_group
hdmi_mode
High-definition multimedia interface (HDMI)
High powered loads
htop
I2C
adapter
address
baud rate
bus
IIC
interface module
level converter
Pi
SCL
SDA
TWI
i2cdetect
i2cget
i2cset
i2c-tools
Interface
I2C serial
parallel
RS232
video
Interfacing
signal
Inverter
Jumpers
Keypad
hex
KY-040
detents
flywheel effect
isolation resistors
push switch
rotary encoder
sequence errors
LCD 1602A module
Light emitting diode (LED)
Liquid crystal display (LCD)
1602A-1
BF flag
4-bit mode
controller
HD44780
LCD1602 class
16x2 LCD
Logic level conversion
74LS04
74LVC244
74LVC245
MC14490
4-bit shift register
clock frequency
oscillator
MCP23017
configuration
INTA interrupt pin
INTB interrupt pin
interrupt capability
Music playing command (MPC)
add
clear
play
playlist
status
stop
volume
Music playing daemon (MPD)
NAND gate
1N914 diode
Noise margin
Octal bus transceiver
Ohm's law
Open collector
Parallel interface
PCF8574
PCF8591
PCF8574P
Pinout
Pi T-Cobbler breakout
Pixel clock
Potentiometer
ADC bits
input controls
PCB mount
range of motion
resistance
steps
taper
trimmers
voltage divider
wiper arm
Propagation delay
t PHL (high to low)
t PLH (low to high)
Pull-up resistors
Pulse width modulation (PWM)
7400 quad NAND gate
Quasi-bidirectional
Range of motion
potentiometer
Raspberry
Pi 2
Pi 3
Zero
Refresh rates
Resistor
tolerances
Resolution
Rotary encoder
detents
flywheel effect
isolation resistors
sequence errors
RS232 interface
Serial peripheral interface (SPI)
Shift register
Sink
Sinking current
Source
Source resistance
ideal battery
Sourcing current
Static electricity
Switching speed
Thread
Transistor transistor logic (TTL)
input levels
5400 series
7400 series
series derivative families
usleep
V CC
V DD
VGA monitors
Video graphics array (VGA)
V IH
V OH
3 Volt
Raspberry Pi
5 Volt
Voltage
dividers
high level
input
logic levels
low level
output
ranges
3.3 volt logic
4-wire ribbon cable
YL-40
conversion to Celsius
I2C address
jumpers
LDR (light dependent resistor)
1N914 experiment
PCF8591
R 6
temperator sensor