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

Excelente producto

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 headerhd44780_I2Cexp lcd;

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.

I have used several of these on both 3.3V and 5V four line twenty characters per line and have had absolutely no problem with any of them. I have used them with Arduino Nano, Mega 2560, ESP8266, and ESP32 without any trouble at all. The LCD's I use have eight pins on each end of the display so I mount the display and these modules on a small circuit board and run 28 or 30 gauge wire between the pins of the display and the module. Works great.

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.

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.

Used these to adapt the LCD SPI interface for to an Arduino UNO. It has been displaying data from a nRF24L01 RF link on the UNOs SPI port and is working well...except sometimes the display goes crazy with marks all over the screen. The LCD did not do that using the SPI interface to the UNO. A power reset is required to correct the problem.

I have these in different sizes and abilities. It fits in very small places and handheld devices. It's amazing how one can read even small text on the display.

Works perfectly, reduces the number of pins used on the mcu. Fits directly on to the back of the LCD display. Libraries are available for Arduino.

Can't get these to work.They probably do work but I must not have correct library, though I used the libraries they say to use.