Hard Drive | SSD |
---|---|
Card Description | Dedicated |
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Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
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Ships from: Amazon Sold by: JANSANE
16x2 1602 LCD Display Screen Blue + IIC I2C Module Interface Adapter for Raspberry pi 2 Pack
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Brand | JANSANE |
Personal computer design type | Mini PC |
Special Feature | Portable |
CPU Manufacturer | VIA |
Connectivity Technology | I2C |
Display Type | LCD |
Human Interface Input | Buttons |
Hard Disk Description | SSD |
Hardware Interface | 3.5mm Audio |
Item Dimensions LxWxH | 2.8 x 1.9 x 1 inches |
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)
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Product information
Technical Details
Brand | JANSANE |
---|---|
Item Weight | 0.81 ounces |
Product Dimensions | 2.8 x 1.9 x 1 inches |
Item Dimensions LxWxH | 2.8 x 1.9 x 1 inches |
Processor Brand | VIA |
Additional Information
ASIN | B07D83DY17 |
---|---|
Customer Reviews |
4.4 out of 5 stars |
Best Sellers Rank | #2,964 in Single Board Computers (Computers & Accessories) |
Date First Available | May 23, 2018 |
Warranty & Support
Feedback
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
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the performance, value, display and ease of use of the computer. For example, they mention that it works great, it's cheap enough for the hobby experimenter and that the backlight is bright. That said, they say it'll add value to any project.
AI-generated from the text of customer reviews
Customers are satisfied with the performance of the product. They mention that it works well on its I2C interface and seems to work great.
"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
"...It is nice and bright and works well on its I2C interface." Read more
"Works exactly as described: 4 wires (2 data pins), GREAT value, simple to code (Arduino I2C library)...." Read more
Customers appreciate the value of the computer. They say it is a decent buy and a high value add to projects.
"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
"...Works well in my application, and the price is very good for the value." Read more
Customers are satisfied with the display of the computer. They mention that it is a great display, nice, and bright.
"...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
"Great display to use with Arduino or other micro controllers supporting I2C. The Arduino librairies available for this display are easy to use...." Read more
Customers find the display easy to use, setup for Arduino or other micro controllers, and simple to code. They say it's easy to hook up on Raspberry Pi and requires some 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
"Easy to setup for Arduino or other micro controllers...." Read more
"Easy setup. Worked on first try." Read more
Customers are satisfied with the brightness of the computer. They mention that the backlight is bright.
"...Contrast had to be adjusted via the trimpot at the back. The backlight is bright...." Read more
"...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
Customers are satisfied with the quality of the computer. They mention that the packaging and the product itself look good.
"...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
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Top reviews from the United States
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Reviewed in the United States on March 16, 2023
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
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.
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.
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