Week 7 - Journal

So, how can I make that circuit understand what it's supposed to do?

The brain (Arduino) is controlled using coding; therefore, I used Arduino IDE to control my chip.

CODING STEPS:

1. To use an IC, I have to install a library to make the IDE understand it, that's what I used for the LCD to define it.

2. For better understanding, I named each pin used after the component's name (switch, RGB, LDR).

3. Moving next to the void setup function (that only works for one time), I started to classify each pin whether it's output or input to make the Arduino understand which is controlled by which, then I implemented the initial states for the LCD to show display, set the cursor (position of printing), and printing a text as a genuine start.

4. Then defined my two variables (one for the switch to initially display the LCD and turn on the rest of the device, the other one is for the LDR sensor).

5. The next step is followed by action using the void loop function and from loop we can deduce that it's infinitely repeated.

6. The logic then begins, and in my scenario, I found the nested if to be convenient to build the whole circuit depending on the switch value whether it is high or low.

7. Inside the first condition comes the second one to determine what the sensor can read to change the RGB color, and the LCD display for the study mood and relax mood.

8. Finally to save some lines and delay time, I created an external function for RGB pins to call it at any condition without complicity and with simple values.