1. Welcometo Practical Session

2. Robot to be made
Chassis
Battery
DPDT Switch

3. Assembling Continued......
MOTOR
Use these Screws ONLY

4. Assembling Continued......

5. Assembling Continued......

6. Assembling Continued......
USE THESE SCREWS

7. Assembling Continued......

8. Assembling Continued......
USE THESE SCREWS

9. Assembling Continued......

10. Assembling Continued......

11. Assembling Completed..

12. Controlling Robot by DPDT Switch
Colourof wire
Connect to
Battery clip
Left motor of robot
Right motorof robot
Wires

13. And You’re done..

14. Circuit Diagram for +5 volts supply
+
-
Input(+9volts)
Output (+5 volts)
Ground

15. Mobile Controlled Robot (DTMF)
DTMFDecoder
Motor Controller
ROBOT(Motors)
DTMF IN(Phone)
Power Supply
Binary Output

16. Mobile Controlled Robot
Components required for preparing the +5 V supply
Breadboard
LM 7805
Cathode
Anode
Input
Ground
Output
LED
Battery clip

17. Continued...
Input
Ground
Output
Positive
Negative(Ground bus)
LM 7805

18. Continued...
Battery clip
Positive
Negative
Anode(positive)
Cathode(negative)

19. Continued...
Resistor (470Ω)
Place resistor between these points

20. IC L293D Pin Configuration
L293D
PIN 1
PIN 8

21. Connecting IC L293D
IC Notch
Pin no. 1 connectedto +5 volts
+5 volts from here
Pin no. 9

22. Connecting +5 volts supply to IC
Pin no. 1 and 16 connectedto +5 volts
Pin no. 9 connected to +5 volts

23. Connecting +9volts supply to IC
Connect +9 volts from battery directly to pin no. 8 of IC

24. Connecting Ground to IC
Connect Pin no. 4 & 5 together and to pin no.13
Connect Pin no. 12 & 13 together.

25. Connecting Ground to IC
Connect Pin no. 4 OR 5 to the ground bus of breadboard
Ground bus

26. Connecting Motors to IC L293D
Connect pin no. 3 & 6 to left motor.
Connect pin no. 11 & 14 to Right motor.

27. DTMF Module
DTMF IN (From Phone)
+5V Power supply
Binary Output

28. Connecting DTMF Module
Connect +5V supply to the DTMF board

29. Connect the Binary Outputs to IC
Color of Wire
Connect to
Orange
Pin no. 15
Red
Pin no. 10
Brown
Pin no. 7
Black
Pin no. 2
Connect the four wires as given in below table

30. Connect the DTMF source (Phone)

31. Finally, Connect the battery !!

32. Thank You !!!