This presentation covers PCB design using Protel 99se software and an embedded temperature sensor project. It introduces PCB design topics like schematic capture and component footprints. It then discusses a temperature sensor project using an LM35 sensor, amplifying the output with an op-amp, converting to digital with an ADC, and displaying on a 7-segment LCD. The 7-segment display wiring and cathode vs anode operation is also covered briefly.

1. GOOD MORNING
2
ALL OF
YOU

2. I
PIYUSH GUPTA
PRESENTING MY PRESENTATION
ON
THE
FOLLOWINGS

4. index
PCB DESIGNING:-
1) InTRO OF PCB
2) INTRO OF PROTEL 99 SE
3) schematic capture
4) schematic symbols
5) component footprints
6) working in pcb documents
EMBEDDED SYSTEM:-
1) TEMPERATURE SENSOR
2) SEVEN SEGMENT DISPLAY

7. A
COURSE
ON
COMPUTER AIDED
PCB DESIGN
THROUGH
PROTEL 99se

8. THERE ARE TWOTYPES
OF SHEETS
1) SCHEMATIC SHEET
2) PCB SHEET

9. Schematic
schematic capture
schematic SHEET

11. FOOTPRINTS
OF SOME BASIC COMPONENTS
ARE AS FOLLOWS:-
1) RESISTOR = AXIAL
2) CAPACITOR = RAD
3) IC’S = DIP
4) TRANSFORMER= EE

12. Working
in
PRINTED CIRCUIT BOARD
DOCUMENT

13. My next
topic
is
EMBEDDED
SYSTEM

14. project
made
on
TEMPERATURE SENSOR USING LM35

15. WHAT IS A
TEMPERATURE
SENSOR???

16. ABOUT LM35
THIS IS A
TEMPERATURE
SENSING DEVICE
NEEDS
AD CONVERTER

18. USE THE FACT THAT
TEMPERATURE
INCREASES, VOLTAGE
ACROSS DIODE
INCREASES
AT KNOWN RATE

19. FORMULA OF CONVERTING VOLTAGE
IN TO DEGREE CELCIUS
TEMPERATURE IN C=(Vout in mv)/10

20. ANOTHER ANALOG DEVICE
(TMP36)
TEMPERATURE RANGES
FROM
(-40 TO 150 C)
SAME AS LM35

21. ANOTHER DEVICES LM37 HAS
ADVANTAGE ON LM35
THAT DON’T NEED
AD CONVERTER

22. TESTING YOUR SENSOR

23. INCREASING TEMPERATURE

24. BY THIS WE ALSO DECREASE
TEMPERATURE SIMPLY BY
APPLYING ICE CUBE

25. NOW, IF YOUR SENSOR IS
WORKING
PROPERLY THEN YOU COULD USE
IT IN YOUR PROJECT

26. YOU NEED TO AMPLIFY THE
INPUT
SO, AN OP-AMP(LM324) IS
NEEDED
THEN OUTPUT OF IT GOES TO
AD CONVERTER(AT60804)
TO GET DIGITAL OUTPUT

27. TO IMPROVE THE GAIN:-
VO/VI=(1+RF/RI)

28. OUTPUT OF
ADC,
CONNECTED TO
MICROCONTROLLER(89c52)
AND IT CONNECTED TO
LCD DISPLAY

29. SEVEN SEGMENT DISPLAY

30. EVERY SINGLE SEGMENT
HAS
PAIR OF
RESISTOR & DIODE

32. THE 7-SEGMENT DISPLAY
MAY WORK
ON
BOTH
CATHODE & ANODE

33. IN CATHODE
THOSE SEGMENT WHICH ARE NOT
WORKING AT PRESENT GIVE [0]
BUT
IN CASE OF ANODE WE GIVE IT [1]