Transcript ELG3336 - Remote Controlled Boat

Group B01
Tarek Yakub – 4133137
Fahad Aljenaei – 4290975
Danish Qureshi - 417235
Project Background
 Major Electrical Components
 Pulse Width Modulation (PWM)
 Remote Control
 Potentiometer
 Major Mechanical Components
 Creating a body that can float on water
 Fans to propel boat forward
PWM (IC 555 timer)
 How it works?
 Uses square voltage pulses that power a motor
 The amount of power applied to the motor depends on
the duration of each pulse

The higher the duration of the pulses results in an increased
average power applied to the motor
 Theoretical Circuit
 Actual Circuit & Connection
The Boat
 The boat was made out of swimming noodles held together using
metal bars
 Holes were drilled through a piece of wood to hold the motors in place
and mounted on the boat using metal brackets and screws
Propulsion
 The boat is powered by two computer fans which have
been attached to the output shafts of 6V motors
 By adjusting the potentiometer, the boat is able to
move forward at variable speeds.
 By varying the speed of one motor at a time allows the
boat to turn left or right
The Boat in Motion
 This video shows the boat slightly turning right and
left, as well as slowing speed while moving forward
Complications
 Building the circuit
 Low voltages across the motor
 Not enough current going into the motor
 Solutions to these problems
 Changed one of the capacitors and removed one of the resistors

To deliver the proper amount of current into the motor (1.8 A)
 Changed Potentiometer (from 100 kOhms, to 10 kOhms because
resistance was to high)

This was found through trial and error (at 100 kOhms the current was 428 mA, at
10 kOhms the current was 2.4 A, 6 times greater!)
 Used multi-sim to aid in problem solving
 Choosing a PWM over the variable resistor due to heating up and also
make use of IC 555 timer as we learned
Improvements/Modifications
 Larger Fans
 More powerful motors
 To increase speed
 Place the fans further apart
 To allow the boat to turn easier
 Wireless control
Thank You