Here's an index content for Arduino 10 in 1 projects:

Push button controlled LED: In this project, you’ll add a pushbutton switch to an led circuit to control when the LED is lit.

Light Dimmer: In this project, you’ll create a dimmer switch by adding a potentiometer to control the brightness of an led.

Bar Graph: In this project, you’ll combine what you’ve learned in the previous led projects to create an led bar graph that you can control with a potentiometer.

Weather Station: In this project you’ll set up a weather station to measure temperature and humidity, and display the values on an lcd screen.

LCD Screen Writer: Not only is there something very satisfying about having an lcd screen display your own messages, but it’s also very useful.

Plant Monitor: In this project I’ll introduce a new type of analog sensor that detects moisture levels. You’ll set up a light and sound alarm system to tell you when your plant needs watering.

Motion Sensor Alarm: In this project, we’ll build a motion-sensing alarm using a passive infrared (PIR) sensor.

Arduino Melody: So far all the projects have been visual, so now it’s time to make some music. In this project we will be using a piezoelectric buzzer to play some melodies.

Disco Strobe Light: In this project, you'll apply the skills you learned in project 3 to make a strobe light with adjustable speed settings.

Ghost Detector: Who wouldn’t want to make a ghost detector? this is a really simple project that doesn’t take long to put together, so you can start detecting ghosts right away.