ELG3336 - Remote Controlled Boat

Group B01

Tarek Yakub – 4133137Fahad Aljenaei – 4290975Danish Qureshi - 417235

Project BackgroundMajor Electrical Components

Pulse Width Modulation (PWM) Remote ControlPotentiometer

Major Mechanical ComponentsCreating a body that can float on waterFans to propel boat forward

PWM (IC 555 timer)How it works?

Uses square voltage pulses that power a motorThe 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 BoatThe 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

PropulsionThe 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 MotionThis video shows the boat slightly turning

right and left, as well as slowing speed while moving forward

ComplicationsBuilding 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/ModificationsLarger FansMore powerful motors

To increase speed

Place the fans further apartTo allow the boat to turn easier

Wireless control

Thank You