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Contents

• Introduction

• Circuit Diagram

• Circuit Description

• PCB Layout

• Features

• Application

• Conclusion

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IntroductionIntroduction

 

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•It is an digital speedometer-odometer which can be installed with a bike.

•Digital speedometers are found only in luxury cars and high-end motor bikes.

•The circuit uses an AT89C2051 Microcontroller, a 16x2 LCD display, 4N35 optocoupler, 24C02 EEPROM.

•It is better alternative to the mechanical speedometer & even beginner with min. skill level.

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Circuit Diagram

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Circuit DescriptionCircuit Description

•Microcontroller :- A 20-pin AT89C2051 microcontroller from ATMEL is used with CISE-Based 8051 family.

•LCD Module :- It is used to display the speed & distance traveled, here used a 16x2 alphanumeric LCD based on HD44780 controller.

•Serial EEPROM :- Electrical Erasable Programmable Read Only Memory.

•I2C Bus Protocol :- It is MultiMate bus, it uses serial data line (SDA) & serial clock line (SCL).

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•Speed Sensor :- It sends a pulse to the microcontroller each time a revolution is made.

•Optocoupler :- It is used to count the effect of bouncing.

•Power Supply :- The power supply for the circuit is drawn from the vehicles is 12 volts.

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•Digital read out.

•Speed Displayed in km/hr.

•Distance travelled displayed in km.

•Readings saved in non-volatile memory.

•Reliability due to use of the microcontroller.

•No mechanical wear & tear.

•Home-brewed speed transducer or sensor.

•Self reset to zero after completion of 99999.9km.

•Easy to built & fix on the bike.

FeaturesFeatures

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•It is used in luxury cars & motor bike.

•It is used to measured speed of the motor bike.

•It measures speed & quantity of fuel.

•It is used to counting revolution and speed calculation of cars.

•It is used for conversion of speed & display the result.

ApplicatioApplicationn

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Considering the total requirement and need of society as well as according to cost analysis and project profitability statement it is concluded that the project microcontroller based speedometer-Cum-Odometer is technically viable, financially feasible and suitable for speed measurement.

ConclusionConclusion

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