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for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included

for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included

for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included
$ 12.39

Score By Feature

Based on 91 ratings
Brightness
9.13
Value for money
8.33
Easy to use
7.70

OveReview Final Score

How Our Score Is Calculated

Product Description

This LCD display module, based on the popular HD44780 controller, works very well with ArduinoIDE and other microcontrollers.
With high display function, you can display 20 characters per row, and 80 characters per row when four rows are displayed
Getting instructions and tutorials by email is convenient You can easily download them
Present 4 pin male to female jump cables, 4 nylon columns for the Fixed LCD Panel and a set of
The specifications are as follows working voltage 5V DC dimensions There are only two I/O ports on the IIC/I2C interface.

Questions & Answers

What kind of TV does it support?

This does not support display of characters other than

Could you please let me know whether the library works with the ?

Using this device will work with Arduino, but it requires an I2C interface, so you will not be able to Liquid Crystal PCF8574 is a library that should work.

When it's connected to the 5 V supply, how much current does it consume?

In terms of measurements, I am about 44-45 With a DMM in the display Vcc line, it draws 45 mA. However, this is a digital load that might fluctuate faster than the DMM can read. The application does not seem to use much power. You can use the PCF8574 if you wish. A library is available at the Hu. Other libraries that I tried failed to deliver the results I expected.

For this display, what address is used?

0x27 is what I found mine to be

Selected User Reviews For for ArduinoIDE, Longruner 20x4 LCD Display Module IIC/I2C/TWI Serial 2004 with Screen Panel Expansion Board White on Blue, 4 pin Jump Cables Wire Included

LiquidCrystal_PCF8574 is the library to use
5/5

LiquidCrystal_PCF8574 is the library to use. It took me more than a few hours to get that library to compile, and even after it did, it I have had a difficult time. It took me a while to get back here, but I finally Additionally, it wasn't explained, but you need to short the two LED pins on the serial board. Mine didn't come with a jumper, as depicted in the picture.

Kaiden Stafford
Kaiden Stafford
| Sep 16, 2020
If you use the correct library, the display will work
5/5

After I found a library suitable for the PCF8574T chip, I was able to use it very easily. It will NOT work with the CircuitPython libraries from Adafruit (at the time of writing this, new ones are still being added). The display is bright and you can adjust the contrast. The only issue I noticed, so far, is that there are random ghosts or "remnants" who appear when the display is first powered on and you Although, I might be experiencing these problems due to my library.

Addyson Berger
Addyson Berger
| Jul 09, 2020
The processor for this board is an Arduino Teensy! According to the product description, it will work with an Arduino Uno
4/5

I received a software download from technical support that included the library code and example ino. I was then able to find what appears to be a cleaned up version on github. The Arduino-LiquidCrystal can be found in the Arduino folder The I2C protocol This is a library created The new version is currently running in my system. The Teensy processor is also compatible with this My level shifters were obtained from Amazon in order to connect the 3 units. This 5V display can be powered by a 3V Teensy. During line updates, a ghost image is displayed for a brief period before the new text is displayed. That's why I gave it four stars. In the case of a frequently updated display, this could cause problems. In case I learn anything more, I will update this post.

Avery Davidson
Avery Davidson
| Sep 29, 2020
I got it to work with the Arduino Uno WiFi Rev 2
5/5

On some other Arduino boards you use A4 and A5. I matched SCL and SDA for the WIFI REV2 to match those on the other platforms. I am very happy with the way this works. #include 'LiquidCrystal_PCF8574'. I've reached This consists of #include <Wire. h> This is liquid crystal PCF8574 lcd (0x27) Setting the LCD address to 0x27 using void setup() I. e. [+br> Then begin transmission (0x27) Setting backlight(255) This is a LCD display. The home() method This is a LCD display. This is a LCD display.

Hugh Jacobson
Hugh Jacobson
| Apr 07, 2021
The price is economical, and the program is easy to use
4/5

controlled this display using the LiquidCrystal_I2C library both with the Arduino UNO and the MKR WiFi1010, and found it simple to control using the I2C protocol. There are four pin jumpers on this product for powering it and communicating with it. If bezel mount could be obtained, that would be nice. There are no displays of this type made for clean panel mounting that I can find.

Halle HARTLEY
Halle HARTLEY
| Nov 27, 2020
A great LCD display with a backpack that supports I2C
5/5

Assembled and ready to use, the display and backpack for the Longrunner came fully assembled. I was able to work right out of the box using the PCF8574 library and an Arduino UNO. For it to work, I did not require any support from Longruner. In particular, I enjoyed the Longrunner package since it included jumpers and nylon standoffs, making breadboarding projects.

Atticus Barnett
Atticus Barnett
| Jul 08, 2020
The LCD display on this I2C device is nice
5/5

Thanks to its I2C compatibility, it only requires a few wires to be plugged in. used it to make a display for my hydroponic pump timer by integrating it with an Arduino. The message works well and you can customize it to your liking within the limitations of four lines and 20 characters per line. It is even possible to store special characters of your own design in the LCD display's memory.

Jaime Baker
Jaime Baker
| Jul 28, 2020
It does not work in two of the two cases It is resolved
4/5

These LCDs are great. I bought two of them. When I use an Arduino Mega, I can control the backlight to go high or low, but I cannot print any text. There has been no change in contrast potting speed with slow ups and downs. A datasheet or informational sheet was not included in the package. The email I sent to Longruner has not yet been responded to. I have updated the article After receiving sample code and correct library to use, the seller emailed me within 24 hours. Both LCDs now function properly. It was not the LCDs themselves that caused the problem. It was the incorrect library. Longruner, thanks for your kind words.

Sara Chase
Sara Chase
| Sep 24, 2020

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