LCD1602 I2C Display Module | Yellow-Green, 5V, 2 Pin

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LCD 1602 Character Display Module, Yellow-Green, 5V, I2C Interface

LCD 1602 yellow-green character display module with an I2C interface that uses only two I/O pins.
5V | I2C (IIC) | adjustable contrast | controllable backlight
Check the I2C chip on the back: PCF8574 uses address 0x27, PCF8574A uses 0x3F

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NT$90

NT$85

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Description

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Description

arduino專用IIC匯流排控制，只佔用2個IO
對比度可調，背光燈可控

使用前請確認LCD模組後方的I2C模組之IC型號，依據型號來調整程式碼中LCD的I2C位址。
如是PCF8574A就修改成0x3F
如是PCF8574就修改成0x27

如何查詢I2C位址

操作流程

STEP 1. 將欲查詢的模組連接至Arduino UNO（附圖為腳位參考，實際請比對商品標示接線）

STEP 2. 開啟Arduino IDE並新增檔案

STEP 3. 貼入教學下方的範例文件，並上傳到Arduino UNO，即會開始掃描I2C位址

STEP 4. 開啟序列埠監控視窗，即可取得I2C位址

I2C掃描範例程式

    / ---------------------------------------------------------------- / 
  // 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  //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 
  } 

 

出貨清單

LCD 1602 液晶顯示模組黃綠 5V I2C介面 x 1

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Delivery Options

Overseas (Post)
Postal delivery
7-11 Pickup and pay in store (C2C)
7-11 Pickup only (C2C)
Tcat - Room Temp.
Tcat - Room Temp. (Collect on Delivery)
Draft quotation

Payment Options

Sales Coordinator Contact
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Pay on 7-11 Store Pickup (C2C)

	/ ---------------------------------------------------------------- /
	// 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 //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
	}

LCD 1602 Character Display Module, Yellow-Green, 5V, I2C Interface

操作流程

I2C掃描範例程式

Delivery Options

Payment Options

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