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價格均為含稅價,滿1000元享免運優惠!歡迎公司及學校機關團體大量採購,由專人提供專案報價。
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產品貨號:368030500701
區號:Kc02-02-E03
品牌:
原廠貨號:
全店,滿千免運優惠(限郵寄和超商純取貨)
商品存貨不足,未能加入購物車
您所填寫的商品數量超過庫存
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{{'product.preorder_limit.hint'| translate}}
每筆訂單限購 {{ product.max_order_quantity }} 件
現庫存只剩下 {{ quantityOfStock }} 件
商品簡介 |
原來的LCD1602屏/LCD2004屏,需要7個IO口才能驅動起來,Arduino IIC/I2C/接口轉接板,採用I2C通訊控制,只占用2個IO口,這個模組可以幫你省5個IO口
使用前請確認模組之IC型號,依據型號來調整程式碼中的I2C位址。
如是PCF8574A就修改成0x3F
如是PCF8574就修改成0x27
商品規格 |
如何查詢I2C位址 |
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
/ ---------------------------------------------------------------- / | |
// 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 |