Electronics Design

This week's group assignment involved the observation of a microcontroller circuit board using test equipment in our lab. So, in order to do that we used Wael's PCB and the oscilloscope we had in our lab.

Testing the Uploading of the Code

After wiring the hello board with the Arduino and writing the program that the board would function with, we uploaded the program to the board using "Upload using programmer" under the sketch menu of the Arduino IDE. To simulate the upload of the program to the board that we used with the help of Arduino, we wired the oscilloscope to the MISO and MOSI connections of the board, and the result looks like the following:

Observing the operation of the board

The board that we used had embedded two LED lights (one red and one green), a button and a LDR. We decided to represent the function of the two LED lights depending on the other parameters attached to the board. The result of that representation can be seen in the video below.

The yellow graph represents the signal going to the green LED and the blue signal represents the signal going to the red LED. When the intensity of light increases, we notice that the frequency of blinking of the Green LED increases, by decreasing the delay time. On the other hand, once there is darkness, the signal stops at the Green LED and starts on the Red LED pin, changing its frequency depending n how dark it is.