esp32cam监控小车接线和程序实现,手机连接esp32遥控小车
时间: 2023-10-05 19:12:31 浏览: 224
接线方案:
首先,将ESP32CAM与L293D电机驱动板连接。
ESP32CAM:
- GND -> GND
- 5V -> 5V
- U0T -> RXD
- U0R -> TXD
- IO13 -> SDA
- IO14 -> SCL
L293D电机驱动板:
- IN1 -> IO26
- IN2 -> IO27
- IN3 -> IO14
- IN4 -> IO12
- ENA -> IO13
- ENB -> IO15
- VCC -> 5V
- GND -> GND
程序实现:
1. 连接WiFi:
```cpp
#include <WiFi.h>
const char* ssid = "YourSSID";
const char* password = "YourPassword";
void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());
}
void loop() {
}
```
2. 连接WebSocket服务器:
```cpp
#include <WiFi.h>
#include <WebSocketsClient.h>
const char* ssid = "YourSSID";
const char* password = "YourPassword";
const char* webSocketServer = "ws://192.168.1.100:8080"; //WebSocket服务器地址
WebSocketsClient webSocket;
void webSocketEvent(WStype_t type, uint8_t* payload, size_t length) {
switch(type) {
case WStype_DISCONNECTED:
Serial.println("WebSocket Disconnected");
break;
case WStype_CONNECTED:
Serial.println("WebSocket Connected");
break;
case WStype_TEXT:
Serial.print("WebSocket Message: ");
Serial.println((char*)payload);
break;
}
}
void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());
webSocket.begin(webSocketServer);
webSocket.onEvent(webSocketEvent);
}
void loop() {
webSocket.loop();
}
```
3. 控制小车:
```cpp
#include <WiFi.h>
#include <WebSocketsClient.h>
const char* ssid = "YourSSID";
const char* password = "YourPassword";
const char* webSocketServer = "ws://192.168.1.100:8080"; //WebSocket服务器地址
WebSocketsClient webSocket;
void webSocketEvent(WStype_t type, uint8_t* payload, size_t length) {
switch(type) {
case WStype_DISCONNECTED:
Serial.println("WebSocket Disconnected");
break;
case WStype_CONNECTED:
Serial.println("WebSocket Connected");
break;
case WStype_TEXT:
Serial.print("WebSocket Message: ");
Serial.println((char*)payload);
if (payload[0] == 'F') {
digitalWrite(26, HIGH);
digitalWrite(27, LOW);
digitalWrite(14, HIGH);
digitalWrite(12, LOW);
} else if (payload[0] == 'B') {
digitalWrite(26, LOW);
digitalWrite(27, HIGH);
digitalWrite(14, LOW);
digitalWrite(12, HIGH);
} else if (payload[0] == 'L') {
digitalWrite(26, LOW);
digitalWrite(27, HIGH);
digitalWrite(14, HIGH);
digitalWrite(12, LOW);
} else if (payload[0] == 'R') {
digitalWrite(26, HIGH);
digitalWrite(27, LOW);
digitalWrite(14, LOW);
digitalWrite(12, HIGH);
} else if (payload[0] == 'S') {
digitalWrite(26, LOW);
digitalWrite(27, LOW);
digitalWrite(14, LOW);
digitalWrite(12, LOW);
}
break;
}
}
void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());
pinMode(26, OUTPUT);
pinMode(27, OUTPUT);
pinMode(14, OUTPUT);
pinMode(12, OUTPUT);
webSocket.begin(webSocketServer);
webSocket.onEvent(webSocketEvent);
}
void loop() {
webSocket.loop();
}
```
4. 手机端HTML页面:
```html
<!DOCTYPE html>
<html>
<head>
<title>ESP32-CAM Control</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<h1>ESP32-CAM Control</h1>
<button onclick="sendCommand('F')">Forward</button>
<button onclick="sendCommand('B')">Backward</button>
<button onclick="sendCommand('L')">Left</button>
<button onclick="sendCommand('R')">Right</button>
<button onclick="sendCommand('S')">Stop</button>
<script>
var webSocket = new WebSocket('ws://192.168.1.100:8080');
function sendCommand(command) {
webSocket.send(command);
}
</script>
</body>
</html>
```
在这个HTML页面中,我们创建了5个按钮来控制小车的移动。每个按钮都调用sendCommand()函数来发送对应的指令到WebSocket服务器。这个HTML页面可以通过手机浏览器访问,从而实现远程遥控小车的功能。
注意将代码中的WiFi SSID和密码,以及WebSocket服务器地址修改为你自己的。
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