Some Shields etc.
Shields - a small survey
What to do after you finished your project - Stand-alone Arduino
Burning a bootloader
One Arduino Provides Power to Second One
Mobile power supply for stand-alone Arduino
The last one turns off the lights
Dear Power Bank, Don't Switch Me Off
DIY mini shields
Which display: LCD or LED?
Printing special characters on a TFT display
Using a TFT display as a computer terminal
A decoder/driver for 1½ digit 7-segment LED
Getting two extra LEDs for free (Leonardo only)
One Pin Controls two LEDs
Microphone to analog input
Interfacing a 3.3 volt device
Controlling a small stepper motor
DAC without PWM
DC Motor Speed Control Without PWM
Clauduino is my personal
. Any use of this material is at your own risk.