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JANSANE 16x2 1602 LCD Display Screen Blue + IIC I2C Module Interface Adapter for Raspberry pi 2 Pack

4.4 out of 5 stars 150 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
Brand BAKAH
Operating System Linux
Graphics Card Description Dedicated
Personal computer design type Mini PC
Included Components 2 x 16x2 1602 LCD Display Screen, 2 x IIC I2C Module Interface Adapter
Special Feature Portable
CPU Manufacturer VIA
Connectivity Technology Ethernet, LAN
Total USB Ports 2
Display Resolution Maximum 1920 x 1080

About this item

  • Accessories: blue 16x2 1602 lcd display + I2C serial interface backpack; 1602lcd screen can display 2 lines x 16 characters, built-in industry standard HD44780 LCD controller.
  • Default address: PCF8574T chip 0x27; PCF8574AT chip 0x3F; please check the chip you use on the i2c interface. (Please download the LiquidCrystal_I2C library before uploading the code to the board)
  • Four pins: VCC, GND, SSD and SCA for connecting Dupont wire or IIC special cable.
  • Compatibility: Used to connect Arduino and Raspberry pi and can be used to display real-time clock, temperature, humidity, etc. (Also need to use potentiometer to adjust contrast. Operating voltage: 5V only)

What's in the box

  • 2 x 16x2 1602 LCD Display Screen, 2 x IIC I2C Module Interface Adapter

    • Product information

    Technical Details

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    Other Technical Details

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    Warranty & Support

    Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

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    Product Description

    Specifications:
    Display: 2 lines × 16 characters
    Backlight: blue with white cartoon color
    LCD protocol: HD44780
    Pin definition: VCC, GND, SDL, SCA
    Contrast adjustment : Potentiometer
    Backlight Adjustment: Header
    Default Address: PCF8574T Chip 0x27; PCF8574AT Chip 0x3F
    Working Voltage: 5V

    100% Satisfaction Guarantee
    12 Month Warranty; Not Satisfied , free returns;
    We can also reship for you due to quality problems.

    Package:
    2 packs blue 16x2 1602 LCD screen display + I2C serial interface

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    Customer reviews

    4.4 out of 5 stars
    150 global ratings

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    Customers say

    Customers find the LCD display works perfectly and appreciate its brightness and build quality. Moreover, they consider it excellent value for money. However, customers disagree on the ease of setup, with some finding it easy to set up for Arduino while others note it requires programming for interfacing.

    AI-generated from the text of customer reviews

    Select to learn more

    Works wellValue for moneyDisplay qualityBrightnessBuild qualityEase of setup
    16 customers mention "Works well"16 positive0 negative

    Customers report that the LCD display works perfectly.

    "...It is nice and bright and works well on its I2C interface." Read more

    "These LCDs are an excellent value, and both of mine worked perfectly, but they come with no directions...." Read more

    "...Nothing is visible without it. Both units worked fine. Quality could have been better with a little attention to how these are assembled...." Read more

    "...Great product, works; I think the complaints of damaged shipment is not entirely the fault of seller...." Read more

    11 customers mention "Value for money"11 positive0 negative

    Customers find the LCD display to be excellent value for money.

    "These LCDs are an excellent value, and both of mine worked perfectly, but they come with no directions...." Read more

    "...build quality for the price is solid and the price point is just enough that I doubt you're going to really mind if one of them burns out in a month..." Read more

    "They are certainly cheap enough for the hobby experimenter that if you blow one no big deal. You will need to change the address...." Read more

    "...It's hard to beat that kind of performance at that price...." Read more

    9 customers mention "Display quality"9 positive0 negative

    Customers like the display quality of the LCD screen.

    "...After I did that, the display came alive. It is nice and bright and works well on its I2C interface." Read more

    "This is a good product but i returned two of them . The first one was due to not seeing display...." Read more

    "...Great product, works; I think the complaints of damaged shipment is not entirely the fault of seller...." Read more

    "...Nice and bright." Read more

    4 customers mention "Brightness"4 positive0 negative

    Customers like the brightness of the display screen.

    "...After I did that, the display came alive. It is nice and bright and works well on its I2C interface." Read more

    "...Nice and bright." Read more

    "Nice and bright... no soldering or debugging! Work with all the standard Arduino libraries...." Read more

    "Bright backlight, interfaces with Raspberry-Pi..." Read more

    3 customers mention "Build quality"3 positive0 negative

    Customers appreciate the build quality of the LCD display.

    "...build quality for the price is solid and the price point is just enough that I doubt you're going to really mind if one of them burns out in a month..." Read more

    "...The units arrived well packed. They seem to be well made and all the ones we connected worked properly right out of the packaging...." Read more

    "The screens arrived in decent packaging, both looked like good quality. Spent hours working with the 1st one. Could not get it to work...." Read more

    9 customers mention "Ease of setup"6 positive3 negative

    Customers find the LCD display easy to set up with Arduino, though one customer notes it requires programming for interfacing.

    "Works exactly as described: 4 wires (2 data pins), GREAT value, simple to code (Arduino I2C library)...." Read more

    "...I2C. The Arduino librairies available for this display are easy to use. Requires some programming for interfacing" Read more

    "...excellent value, and both of mine worked perfectly, but they come with no directions...." Read more

    "Easy setup. Worked on first try." Read more

    Good value, quality could be better
    4 out of 5 stars
    Good value, quality could be better
    These work well and are as described. Contrast had to be adjusted via the trimpot at the back. The backlight is bright. There doesn't seem to be any way to control brightness in software, can just turn it on or off. The backlight is required though. Nothing is visible without it. Both units worked fine. Quality could have been better with a little attention to how these are assembled. Looks like they were put together in a hurry.
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    Top reviews from the United States

    • Miklos P. Kadar
      5.0 out of 5 stars Make sure you adjust the small potentiometer in the back until you start to see the number segments
      Reviewed in the United States on January 12, 2024
      Verified Purchase
      At first I thought these were defective until somewhere on a YouTube sight I heard that the potentiometer in the back-side of the CCA needs to be adjusted for contrast. After I did that, the display came alive. It is nice and bright and works well on its I2C interface.
      Helpful
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    • garage man
      5.0 out of 5 stars Excellent Value, No Directions
      Reviewed in the United States on May 26, 2019
      Verified Purchase
      These LCDs are an excellent value, and both of mine worked perfectly, but they come with no directions. Thanks to the 8574 interface board on the back, you only need 4 connections to an Arduino Uno board, one 5V, one GND, A4 to SDA and A5 to SDL. You’ll also need a zip file with the library for the Liquid Crystal PFC8574 interface. One other thing that should be mentioned is that you need to connect a 2-pin jumper at the pins marked LED on the 8574 board. Two of these jumpers come in the package with the 2 LCDs, but they are not installed – be careful opening the package, because they are tiny and easily lost if they fall out.
      2 people found this helpful
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    • Vinay
      4.0 out of 5 stars Good value, quality could be better
      Reviewed in the United States on March 16, 2023
      Verified Purchase
      These work well and are as described. Contrast had to be adjusted via the trimpot at the back. The backlight is bright. There doesn't seem to be any way to control brightness in software, can just turn it on or off. The backlight is required though. Nothing is visible without it. Both units worked fine. Quality could have been better with a little attention to how these are assembled. Looks like they were put together in a hurry.
      Customer image
      Vinay
      4.0 out of 5 stars
      Good value, quality could be better

      Reviewed in the United States on March 16, 2023
      These work well and are as described. Contrast had to be adjusted via the trimpot at the back. The backlight is bright. There doesn't seem to be any way to control brightness in software, can just turn it on or off. The backlight is required though. Nothing is visible without it. Both units worked fine. Quality could have been better with a little attention to how these are assembled. Looks like they were put together in a hurry.
      Images in this review
      Customer imageCustomer image
      Helpful
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    • Intel Junkie
      5.0 out of 5 stars Most important to adjust pot on back board to see display(contrast) and test with LCD Uno sketch
      Reviewed in the United States on September 8, 2020
      Verified Purchase
      This is a good product but i returned two of them . The first one was due to not seeing display.
      The second because they sent it without the serial piggyback board that makes it a 4 wire display.

      Advice:
      Load your library in Arduino for Arduino I2C Serial LCD
      Go to FILE ....EXAMPLES....Arduino I2C Serial LCD or whatever library is and load HELLO WORLD or other example

      Test it out. If you get no display alter the line that changes the address so it sees the device.

      0x27 (Zero X Two Seven) is most common for sunfounder devices. There is a test program to find your lcd address
      you load the test then you go to serial monitor while the arduino uno with the lcd is connected and it will tell you the address of the display. Then you change the code to the right address.

      Think of it like this the mail man delivers the mail to the wrong house because you have the wrong address and wonder why you aren't getting your mail;

      Here is sketch for lcd test

      #include <Wire.h>
      #include <LiquidCrystal_I2C.h>

      LiquidCrystal_I2C lcd(0x27,20,4); // set the LCD address to 0x27 for a 16 chars and 2 line display

      void setup()
      {
      lcd.init(); // initialize the lcd
      lcd.init();
      // Print a message to the LCD.
      lcd.backlight();
      lcd.setCursor(1,0);
      lcd.print("hello everyone");
      lcd.setCursor(1,1);
      lcd.print("konichiwaa");
      }

      void loop()
      {
      }

      To test your display compile this code then send to your uno or nano (etc)

      your code in Arduino IDE Software, save it. Select the port (i.e COM3) and choose your Arduino board type (i.e Arduino Uno / Genuino) then compile it to your Arduino.
      / ---------------------------------------------------------------- /
      // Arduino I2C Scanner
      // Re-writed by Arbi Abdul Jabbaar
      // Using Arduino IDE 1.8.7
      // Using GY-87 module for the target
      // Tested on 10 September 2019
      // This sketch tests the standard 7-bit addresses
      // Devices with higher bit address might not be seen properly.
      / ---------------------------------------------------------------- /

      #include <Wire.h> //include Wire.h library

      void setup()
      {
      Wire.begin(); // Wire communication begin
      Serial.begin(9600); // The baudrate of Serial monitor is set in 9600
      while (!Serial); // Waiting for Serial Monitor
      Serial.println("\nI2C Scanner");
      }

      void loop()
      {
      byte error, address; //variable for error and I2C address
      int nDevices;

      Serial.println("Scanning...");

      nDevices = 0;
      for (address = 1; address < 127; address++ )
      {
      // The i2c_scanner uses the return value of
      // the Write.endTransmisstion to see if
      // a device did acknowledge to the address.
      Wire.beginTransmission(address);
      error = Wire.endTransmission();

      if (error == 0)
      {
      Serial.print("I2C device found at address 0x");
      if (address < 16)
      Serial.print("0");
      Serial.print(address, HEX);
      Serial.println(" !");
      nDevices++;
      }
      else if (error == 4)
      {
      Serial.print("Unknown error at address 0x");
      if (address < 16)
      Serial.print("0");
      Serial.println(address, HEX);
      }
      }
      if (nDevices == 0)
      Serial.println("No I2C devices found\n");
      else
      Serial.println("done\n");

      delay(5000); // wait 5 seconds for the next I2C scan
      }

      Then run serial monitor and copy down the address
      8 people found this helpful
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    • Chris Nowak
      5.0 out of 5 stars Easy to get going
      Reviewed in the United States on June 11, 2020
      Verified Purchase
      No documentation, but it's a 1602 with the PCF8574 chip on the backpack. This is a really commonly used setup and there are plenty of libraries for it. Other than power, just 2 wires are needed to get it setup for I2C. My address was 27 and had the yellow tape on the USB port.

      If your screen is blank or not working but the LED light is on, make sure you adjust the contrast (both of mine came adjusted all the way down). This is done by adjusting the potentiometer, which is a blue box on the back of the LCD with a screw in it. Use a screw driver to slowly turn the screw until you can see the individual numbers/letters.
      Customer image
      Chris Nowak
      5.0 out of 5 stars
      Easy to get going

      Reviewed in the United States on June 11, 2020
      No documentation, but it's a 1602 with the PCF8574 chip on the backpack. This is a really commonly used setup and there are plenty of libraries for it. Other than power, just 2 wires are needed to get it setup for I2C. My address was 27 and had the yellow tape on the USB port.

      If your screen is blank or not working but the LED light is on, make sure you adjust the contrast (both of mine came adjusted all the way down). This is done by adjusting the potentiometer, which is a blue box on the back of the LCD with a screw in it. Use a screw driver to slowly turn the screw until you can see the individual numbers/letters.
      Images in this review
      Customer imageCustomer image
      8 people found this helpful
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    • Luke M.
      5.0 out of 5 stars Pinout
      Reviewed in the United States on March 2, 2020
      Verified Purchase
      For those not using Arduino libraries on AVR devices. It must be initialized into 4-bit mode & the pin out is..
      D7 D6 D5 D4 BL EN RW RS -- Check the datasheet for HD44780U on how to do this
      You must send high bits first with enable pulse then send the low bits with enable pulse
      If I had known this earlier I could have finished writing my own LCD i2c drivers much sooner(2weeks) but alas I've figured it out and can start looking at my next learning project.

      Great product, works; I think the complaints of damaged shipment is not entirely the fault of seller. Sometimes people don't care what's in the boxes they are throwing around at shipping facilities.

      I had no issues/damaged pins; Only gripe was trying to figure out the which pins were which & I'm lucky most folks use the same pinout when using this LCD controller & GPIO expander so I found the pinout in someone's STM32 project(I'm using 8bit AVR controllers).

      Edit: BL is Backlight; The list is all the pins you need for operation
      High bits => D7-D4
      Backlight => BL
      EN(or E) => Enable pin
      Read/Write select => RW
      Register select(command or data) => RS
      2 people found this helpful
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    • Peter Franzke
      4.0 out of 5 stars Work for my RPI project. I did need to download drivers.
      Reviewed in the United States on March 16, 2019
      Verified Purchase
      If you're purchasing these you probably have some purpose or technical skills when it comes to these types of devices. It's not plug and play and you will most likely need to download the drivers but whatever particular project you're working on. build quality for the price is solid and the price point is just enough that I doubt you're going to really mind if one of them burns out in a month or so although I have experienced no such issues.
      3 people found this helpful
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