WEEK 14

This is important week as this week is FYP 2 presentation day. It being held at Gemilang Hall and start at 9.00 a.m until 12.00 p.m. The students is being advise to attend early at 8.30 a.m  for registration and set up the booth. The poster and the project is been set up. The assessor for the FYP 2 are Prof. Dr. Air Abas and Madam Azliza Arshad. The presentation is finished at 11.20 a.m.     

Figure 1: Poster Design

Figure 2: FYP Presentation Day

Figure 1: Micromouse

WEEK 13

There is a problem occured when all the circuit, microcontroller and motor is connected together. The motors is not moving accordingly. After the troubleshooting, the problem is still arise again. The supply voltage is been checked on motor driver`out of fear lacking voltage. However, there is no problem on the lack of voltage. When using only one motor, there is no problem arise but when the two motor is been installed together there is no movement of motor. Even the motor driver is not working even though the voltage is enough to operate them.

Figure 1: View of the micromouse

Figure 2: Trouble shooting on the motor driver

Figure 3: Complete construct of micromouse

Figure 4: Front view

Figure 5: Side view

WEEK 12

After changing the coding and using 7.4V lithium ion battery, the improvement of motor speed rotation is very impressive. The low speed of motor before probably because of low input voltage. However the speed is a bit slow than expected even though the stepper motor is slower than other 2 types of motor that are servo motor and DC motor.

Coding:

WEEK 11

Now its time to test the stepper motor. Stepper motor is connected to the motor driver ULN2003 as figure below.

Then the motor driver is connected to the microcontroller. From the testing result, the speed of rotation motor is very slow.

 

WEEK 10

The sensor circuit is tested for distance measurement. The IR sensor can detect the obstacle from a range 2cm to 30cm. To get the result the output voltage of sensor is measured.

Result:

Table 1

As shown on the table above, the voltage increase as the distance is increase. However at some point of the distance it will decrease again.

WEEK 9

This week, the continuity test for the sensor circuit have been conduct. The connection of the soldering component was check to ensure that there is no short circuit or open circuit follow by the design of this project circuit.

WEEK 8

For continuation of the hardware development, the circuit for the sensor have been designed. The sensor that I used is infrared (IR) sensor. I used 2 sensor which is on the front right and front left. The sensor will be cover the front view and the side view. There is also variable resistor to control the length of distance between the sensor and obstacle or wall. The sensor provide the detection range between 5cm to 20cm. 

It is the same principle in all Infra-Red proximity sensors. The basic idea is to send infra red light through IR-LEDs, which is then reflected by any object in front of the sensor. Then all it have to do is to pick-up the reflected IR light. For detecting the reflected IR light another IR-LED is going to be use to detect the IR light that was emitted from another led of the exact same type. This is an electrical property of Light Emitting Diodes (LEDs) which is the fact that a LED produce a voltage difference across its leads when it is subjected to light.

Circuit of IR sensor