Arduino Workshop 4th session In this session, you will learn - How to use a Bluetooth module to control the Arduino board. - How to use Relay module to control something that needs a larger voltage than Arduino's. - Using LCD to display anything.

2. Astrobot
SESSION 6

9. Relay

10. It’s the connection ring
between the
microcontrollers that
provides a low electrical
DC Power & the high
electrical power devices
that even may use AC

11. How it can work?

12. Connection with Arduino board

13. Make the lightning
system of your
home automation

14. Sol
:

15. Relay

16. It’s the connection ring
between the
microcontrollers that
provides a low electrical
DC Power & the high
electrical power devices
that even may use AC

17. How it can work?

18. Connection with Arduino board

19. Make the lightning
system of your
home automation

20. Sol
:

21. Liquid Crystal
Display

22. LCD Pins
• Control Pins
- Register Select (RS)
- Read/Write (RW)
- Enable (E)
• Data Pins
- D0 : D7
• Brightness Pins
- Ground (VSS)
- Voltage Support (VDD)
- Brightness (Vo)
• Backlight LED
- A (Anode)
- K (Cathode)

23. Let's See What controls The Brightness of the Backlight LED

24. Potentiometer

25. Let's Setup
The LCD with
The Arduino

26. Let's Code !

27. Simple LCD
Code

28. Output

29. Debugging
LCD Code

30. Output

31. Other Liquid
Crystal
Functions
LCD.CLEAR(); //CLEARS THE
DISPLAY
LCD.BLINK(); //DISPLAYS THE
BLINKING LCD CURSOR
LCD.NOBLINK(); //TURNS OFF
THE BLINKING LCD CURSOR
LCD.CURSOR(); //DISPLAYS
AN UNDERSCORE AT A
CERTAIN POSITION
LCD.NOCURSOR(); //HIDES
THE CURSOR
LCD.SETCURSOR(CHARACTER
_POSITION,ROW);