写程序,基于Arduino.采集HX711模块压力传感器的重量通过ESP8266 WIFI模块上传到手机app怎么做
时间: 2024-03-18 13:41:11 浏览: 133
好的,这是一个比较复杂的问题。下面是一个简单的流程,帮助你完成这个任务:
1. 硬件连接:
将HX711模块连接到Arduino,然后将ESP8266 WIFI模块连接到Arduino上。
2. 编写Arduino代码:
使用HX711库和ESP8266库,编写代码来读取HX711模块的值,并将其通过ESP8266 WIFI模块上传到手机app。下面是一个示例代码:
```
#include <HX711.h>
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
const char* host = "your_APP_HOST";
const int port = 80;
HX711 scale(DOUT_PIN, CLK_PIN);
void setup() {
Serial.begin(9600);
scale.set_scale(SCALE_RATIO);
scale.tare();
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
}
void loop() {
float weight = scale.get_units();
Serial.print("Weight: ");
Serial.print(weight);
Serial.println(" kg");
if (WiFi.status() == WL_CONNECTED) {
WiFiClient client;
if (client.connect(host, port)) {
Serial.println("Connected to server");
String data = "weight=" + String(weight);
client.println("POST /upload HTTP/1.1");
client.println("Host: " + String(host));
client.println("Content-Type: application/x-www-form-urlencoded");
client.println("Content-Length: " + String(data.length()));
client.println();
client.println(data);
Serial.println("Sent data to server");
} else {
Serial.println("Connection failed");
}
} else {
Serial.println("WiFi not connected");
}
delay(10000);
}
```
其中,DOUT_PIN和CLK_PIN分别是HX711模块的数据和时钟引脚,SCALE_RATIO是你使用HX711模块时设置的比例系数,ssid和password是你的WiFi名称和密码,host是你的app服务器主机地址。
3. 编写手机app:
使用Android Studio或其他开发工具,编写一个简单的app,用于接收从Arduino发送的数据。可以使用HTTP POST请求来接收数据。下面是一个示例代码:
```
public class MainActivity extends AppCompatActivity {
private TextView mTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTextView = findViewById(R.id.text_view);
new Thread(new Runnable() {
@Override
public void run() {
try {
URL url = new URL("http://your_app_host/upload");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setDoOutput(true);
conn.setDoInput(true);
OutputStream os = conn.getOutputStream();
String data = "weight=0";
os.write(data.getBytes());
os.flush();
os.close();
InputStream is = conn.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String response = "";
String line;
while ((line = br.readLine()) != null) {
response += line;
}
br.close();
is.close();
conn.disconnect();
runOnUiThread(new Runnable() {
@Override
public void run() {
mTextView.setText(response);
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
}
}
```
其中,your_app_host是你设置的app服务器主机地址。
4. 运行程序:
将Arduino连接到电脑,上传Arduino代码。然后将ESP8266 WIFI模块连接到你的WiFi网络。最后,在手机上运行app,你应该能够看到从HX711模块读取的重量值。
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