Design And Construction Of A Clock Tick-Tock Sound Generator And Led Pendulum

Electrical Electronics Engineering | Industrial Physics | Physics

The design and construction of a clock tick-tock sound generator and LED pendulum involve integrating electronic components to mimic the rhythmic ticking and swinging motion of a traditional clock. This project encompasses assembling a circuit board with a microcontroller, such as an Arduino, to control the LED pendulum’s movement and generate the tick-tock sound. The circuit includes an accelerometer to detect motion, which triggers the LED pendulum to swing back and forth, simulating a real pendulum’s movement. Additionally, a piezoelectric buzzer or speaker generates the tick-tock sound synchronized with the LED pendulum’s motion, providing auditory feedback. The design requires careful calibration of the pendulum’s swing frequency and the tick-tock sound’s tempo for an authentic experience. Once assembled, the clock tick-tock sound generator and LED pendulum serve as an engaging educational tool or decorative piece, offering a captivating blend of visual and auditory stimuli in a clock-inspired creation.

Wooden-case, battery-operated wall clocks with pendulums are available in the market. Some even have chimes. What is missing is the tick-tock sound of old mechanical pendulum clocks. This work is on a tick-tock sound generator. It is built around timer IC 7555 (IC1) wired as an astable multivibrator. Resistor R1, preset VR1 and capacitor C1 generate frequencies that can be varied with the help of preset VR1. At output pin 3 of IC1, a small speaker is connected via capacitor C3 that produces the tick-tock sound.

TABLE OF CONTENTS

COVER PAGE

TITLE PAGE

APPROVAL PAGE

DEDICATION

ACKNOWELDGEMENT

ABSTRACT

CHAPTER ONE

1.0 INTRODUCTION

1.1 BACKGROUND OF THE PROJECT

PURPOSE OF THE PROJECT
AIM OF THE PROJECT
OBJECTIVE OF THE PROJECT
PURPOSE OF THE PROJECT
LIMITATION OF THE PROJECT
ADVANTAGES OF THE PROJECT
PROBLEM OF THE PROJECT
APPLICATION OF THE PROJECT
RESEARCH QUESTION
PROJECT ORGANISATION

CHAPTER TWO

LITERATURE REVIEW

OVERVIEW OF THE STUDY
REVIEW OF THE RELATED STUDY

CHAPTER THREE

3.0 CONSTRUCTION METHODOLOGY

3.1 BASIC OF THE SYSTEM

3.2 BLOCK DIAGRAM OF THE SYSTEM

3.3 SYSTEM OPERATION

3.4 CIRCUIT DIAGRAM

3.5 CIRCUIT DESCRIPTION

3.6 DESCRIPTION OF COMPONENTS USED

3.7 POWER SUPPLY UNIT

CHAPTER FOUR

4.0 TESTING AND RESULTS

CONSTRUCTION PROCEDURE AND TESTING
INSTALLATION OF THE COMPLET DESIGN
ASSEMBLING OF SECTIONS
TESTING OF SYSTEM OPERATION
COST ANALYSIS

CHAPTER FIVE

CONCLUSION
RECOMMENDATION
REFERENCES

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Tick-tock sound generator circuit

Circuit of tick-tock sound generator Wooden clock design

Shown above is the circuit of a tick-tock sound generator. It is built around timer IC 7555 (IC1) wired as an astable multivibrator. Resistor R1, preset VR1 and capacitor C1 generate frequencies that can be varied with the help of preset VR1. At output pin 3 of IC1, a small speaker is connected via capacitor C3 that produces the tick-tock sound. At pin 3 of IC1, two yellow LEDs are also connected on the clock face to flash in time with sound (see Fig. 2). Adjust preset VR1 such that ticking sound closely resembles the tick-tock of old pendulum clocks. Yellow LEDs (LED1 and LED2) match well with the wooden clock.

LED pendulum circuit

Shown below is the circuit for the LED pendulum. It uses another timer 7555 wired in astable mode and its clock pulse at pin 3 is fed to clock pin 14 of decade counter 4017 (IC3). The outputs of IC3 are connected with the help of switching diode 1N4148 such that the six LEDs (LED3 through LED8) flash in sequence in one direction first and then in reverse sequence. The speed of flashing of LEDs can be adjusted with the help of 10-kilo-ohm preset VR2. Capacitor C6 (6.8nF) and resistor R11 (100-kilo-ohm) are used to reset the decade counter.

Circuit for LED pendulum

Construction & testing

Assemble the circuit on a general-purpose PCB and enclose in a suitable cabinet. Mount the LEDs either in ‘V’ shape or ‘U’ shape on the front panel of the cabinet (as shown in Fig. 4).