HiLetgo 2pcs 5V 2004 1602 LCD Display IIC I2C Adapter IIC Serial Interface Adapter for Arduino Robort Parts

Not super easy to get setup on Arduino Uno but its working great. I learned the length of hookup wires make a difference. Longer wires (1 foot or so) caused ghosted letters on the display. Here are the critical lines of code: #include <hd44780.h> #include <hd44780ioClass/hd44780_I2Cexp.h> // include i/o class header hd44780_I2Cexp lcd;

I was building an external LCD display to use with my Odroid-C4. I needed an I2C interface. This product provided a reliable circuit board, a pinout description to assure compatibility and easy installation. I just don't like the external power pins for backlight since they are extending beyond the board and don't allow for dynamic controls. I ended up using a 2N7000 with a PWM to control the backlight.

After previously purchasing a 20x4 I2C character LCD - also from Hiletgo - I wanted to dive deeper into the world of I2C communications, and I thought that this would be a great companion to the 16x2 character LCD that was included with my Elegoo Arduino UNO starter kit. I had a little bit of trouble with adding solder to the jumpers that assign an address to the modules, mainly because my soldering iron tip was too big, but I eventually was able to set the modules to the addresses that I wanted; I set one to 0x26 and the other to 0x25 to avoid conflicts with the 20x4 display, which I left at the default 0x27 address. Once the custom addresses were set, I proceeded to test the modules using the I2C scanning sketch for Arduino, and they both showed up with the addresses that I wanted. After adjusting the contrast, I wrote up a quick sketch to do some further testing, and both modules did their job and did it quite well. I removed the jumper for the backlight and replaced the jumper with a potentiometer for easy brightness adjustment.

Excelente producto

Fortunately another reviewer left instructions on how to change the address. Soldering that jumper on is not easy even for someone who instructed NASA rated soldering classes. But my eyes were way better then. The worst part is that all of the pins need to be removed so you can solder it to the back of a display. It should have not even had the pins installed. They could have included them. If you don't have a decent soldering iron I wouldn't recommend trying it. But at least they are so cheap you can give it a try.

Great converter and cleanly made. Works as expected with my 16 X 2 displays.

This was supposed to be an I2C module but and IIC came. There are different pin configurations. I need female pins to connect to my 1602 display module, these are male pins.

Needed it for a class project and worked just nice no probs at all