While it might not be exciting, the components become a valuable resource for your company, and it is essential that they accurately represent the real-world component. However, a large part of the work, and to many designers, the more tedious part, is creating the components. The rewarding part of product development is coming up with cool ways of solving those engineering challenges and connecting those components to craft your unique design. In the loop section of the code we first clear out the contents of the LCD and since we gonna programmatically change the contrast we display a text and in a loop we update the pin output and display the current value to the display on the second row.An electronics design is a collection of connected components. If the contrast is set too high, the display is barely visible so we need to decrease it.
The reason for this is the contrast pin value. Very often, depending on the state of the V0 pin, you might face the issue of not having anything displayed even though the expectation was different. To make sure that it is working correctly, we display a message of “hello world” and we wait for about half a second so we can verify that the output is OK. In the Setup function we first set the brightness on the display to the max and then we start communication with the LCD. The contrast control pin on the display is V0 and it is connected to pin 6 on the Arduino and the backlight control pin is marked as A and since this is basically an LED, it is connected through a 220 Ohm resistor to pin 10 on the Arduino. Next, we setup the LCD with the pins that we have our display connected to and additionally we define the pins that we have our backlight and contrast pins connected to. The first thing we need to do is to include the Liquid Crystal library so we can connect to the display. Before going into the schematic how we can fix this, let me explain you the code that I’m using.
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