1. Propeller Clock

2. Agenda General Introduction Working Theory Applications
Hardware Description
Mechanical Assembly

3. General intro Propeller clock : Linear array Of light Emitting Diodes,
Rotating at a high angular velocity to generate a circular screen

4. Theories
Persistence of vision :This is a phenomenon which is related to vision capability of human eye by which an after image is thought to persist for one sixteenth of second approximately
Limit Of Resolution :Shortest Distance between two points on a specimen that can still be distinguished by the observer as separate entities

6. Purpose To show accurate date and time
Circuit must contain memory capacitor to track current time
It can be replaced by IC Ds 1307 ‘Real clock Time’ (RTC)
It works in Analog as well as Digital Mode

7. Block diagram of Propeller ClockS T R I P
RTC
DC MOTOR
POWER SUPPLY M C O N

8. Hardware Description Hardware Description Microcontroller Dc Motor
Real Time clock
LED’s module

9. MICROCONTROLLER Microcontroller ATMEGA8P is a Heart of propeller clock
Mainly used Because of its less weight, maximum memory capacity
Programmable 32kbytes flash memory
Internal RAM 2K bytes

10. LED’s Module
These Units consits Of 17 intensive LED’s which fixed in one side of our PCB
As it rotates with high speed electrical signal get converted into optical signal

11. Real Time Clock(DS 1307)
Clock having low power and inbuilt power circuit to detect the faults
Accurate is given by RTC
Microcontroller ATMEGA328P is a Heart of propeller clock
Mainly used Because of its less weight, maximum memory capacity

12. Mechanical Assembly
Assembly of board is mounted on the top of the motor.
It can improve the overall efficiency and stability of project if it is assembled perfectly

13. RTC
MICROCONTEOLLER
POWER SUPPLY

14. Software simulation :

15. Advantages It can Used as wireless data transfer such as Text Message
Pictures
It is useful as Automatic display
Mostly Used in organisation,Industries,Public Places
Spy watch For security Purpose
For Monitoring Internal behaviour of industry

16. Conclusion Idea Behind This project was
Clock should Built lighter which provides more stability
It gives display using bright light LED’s