Nayim – February Blog

Between November and the end of February, we completed work on the IR sensor circuit and printed the PCB. After the Christmas period, we started work on the white line following for the micromouse. I created the initial breadboard design of the light dependant resistor circuit. This allows the microcontroller to know whether the ground beneath the sensor is white or black.

Hafiz and I worked on designing a prototype circuit for the white line following. We found that the initial prototype had sensors which were too close together. So, we redesigned the circuit and started creating code for the line following. So far, the mouse will identify a corner of the white line and turn the appropriate 90 degrees. However, the mouse wiggles left and right rapidly when trying to navigate the straight sections. We will need to work on reducing the oscillatory response of the mouse in this section.

Additionally I rewrote the code to allow for a 12 bit output to the PWM pins controlling the motors. This allows for a larger degree of control over the speed of the mouse.

For our special feature, we did some work on it by integrating the circuit onto the PCB design and once the PCB is fully functional, we will be able to make progress on the software for the special feature.

Previous blog – November

Next blog – March