pendersricardo ThisLCD display only works with I2C, that's because of the extra PCB board on the backside which makes it easy to connect to an Arduino Nano for example as I do it personally, if you have the Arduino IDE installed on your computer open it and go to Tools, Manage Libraries or use the hotkey combo CTRL SHIFT L to open up the Library Manager and then search for the LiquidCrystal_PCF8574_Test library, install that library and with that library you have a test sketch in the Examples that you can use to get familiar with the code to get this display working.

Venkat Bare copper is fairly resistant to corrosion, but when it is used in wet environments or places with high humidity, it can quickly become damaged. When bare copper is operating at temperatures that exceed 100 degrees Celsius, it may start to degrade. This kind of damage can result in a loss of performance. Tinned copper is easier to connect because tin is a primary component in solder. Tinned copper is better equipped to resist humidity, high temperatures and wet environments.

jozefulrich123 no

grumpy_gnome Do a search for "LCD 2004A datasheet". based on a look at the results, most of these panels seem to use an Hitachi HD44780 or compatible LCD controller. See results from systronix or hobbytronics. A little digging will get to a datasheet - BG won't allow direct links.