Arduino 16x2 LCD Introduction, Interfacing, Programming, Soldering, & Testing

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Arduino and Nodemcu ESP8266 I2C 16X2 LCD:

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Project Description:
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Today’s episode is about the 16x2 LCD. LCD modules are commonly used in most embedded projects, the reason being their cheap price, availability, and programmer-friendly. Most of us would have come across these displays in our day-to-day life, either at PCOs or calculators. In today’s episode, you will learn
1. 16x2 LCD introduction
2. Features of the 16x2 LCD module
3. 16x2 LCD Pinouts or pin Description
4. Soldering
5. 16x2 LCD interfacing with Arduino and
6. 16x2 LCD programming.
Let’s get started….
The components that we will be needing for this project are
1. Arduino
2. 16x2 LCD
3. A potentiometer or Variable resistor and finally
4. Some connection wires, or jumper wires.

LCD stands for Liquid crystal display…16×2 LCD is named so because; it has 16 Columns and 2 Rows… There are a lot of combinations available like 8×1, 8×2, 10×2, 16×1, etc. but the most used one is the 16×2 LCD. So, it will have 16×2=32 characters in total and each character will be made of 5×8 Pixel Dots.

Features of the 16×2 LCD module
• Operating Voltage of the 16X2 LCD is 4.7V to 5.3V
• Current consumption is 1mA without backlight
• This is an Alphanumeric LCD display module, which means you can display alphabets and numbers
• Consists of two rows and each row can print 16 characters.
• Each character is built by a 5×8 pixel box
• Can work on both 8-bit and 4-bit mode. “we will be using this LCD in 4-bit mode”.
• It can also display any custom generated characters. I will explain this in my upcoming tutorial.
• Available in Green and Blue Backlight

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Purchase links for Components with the best prices.

Arduino Nano USB-C Type ( recommended):

ESP32 WiFi + Bluetooth Module for iOT Projects (recommended), more IO pins, improved speed, and supports a Lipo Battery:

16X2 LCD

Potentiometer:

12v Adaptor:

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