Light sensor modules KY-018 and LM393 (3 and 4 pin) for a Raspberry PI...
Read the light values, use it to do things!
Capacitors for beginners
It's almost like going back to the future!
Humidity and Temperature sensor DHT-11 (&DHT-22) for Raspberry Pi and Arduino
How to hook up the temperature sensor
LED modules for Raspberry PI, Arduino
Everything you need to know about LEDs to get started.
Diodes for beginners
Not just LEDs
Resistors for beginners
Everything you need to know about the resistors
Beginner’s electronics guide Raspberry Pi, Arduino
Essential electronic knowledge to have to understand circuits better!
Electronic components are useful!
It's very useful
Raspberry PI sensors
Sensors for RPI - overview
Infrared Sensor HC-SR501 PIR Motion Sensor for a Raspberry PI and Arduino
How to use PIR sensor with your Raspberry PI.