Published February 3, 2023

Car Safe

A guaranteed protection against hit-and-run drivers, who usually leave you in the lurch with repair costs

BeginnerWork in progress329

Story

Introduction

The project was carried out as part of the Internet of Things lecture at the University of Applied Science Esslingen. The goal was to come up with an IoT project that can solve a real Problem of our everyday lives. Also the implementation to the presentation of a prototype was also part of it and thereby students could get an overview of the development of a product from the idea to the implementation.

Motivation

According to the police, about 250, 000 to 300, 000 hit-and-runs are reported in Germany every year, and only 30 to 40 percent of them are solved. Therefore, several thousand should be added to this, because most victims do not report hit-and-runs and try to repair the damage themselves. Unfortunately, if the repair costs are covered by the auto insurance, the fees will increase.

Contact

Kevin, Likane: Responsible for the Idea and Implementiom (likanejoel@gmail.com)

Solution

Car Safe is a monitoring system that can be installed in any car. By means of sensor data, impacts or strong movements such as towing are detected and thus the system is automatically activated:

video recording is started with 360 degree view
Data is stored locally (SD card) or online (cloud)
An app is available to notify the user and in addition he can also get a life recording.

So the perpetrator or his license plate can be identified.

Now Implemented

Currently, the implementation is not yet ready. The latest code offers the possibility to automatically take photos when motion is detected and the data is also automatically sent to Google Drive.

Self Implementation

1- Before connecting the system to the computer first connect the ESP32 CAM as shown in the picture with the USB to TTl converter.

2- Now we can select the following settings on the Arduino IDE:-> Board: ”ESP32 Wrover Module”-> Upload Speed: “115200”-> Flash Frequency: “40MHz”-> Flash Mode: “Q10”-> Partition Scheme: “Huge APP (3MB No OTA/1 MB SPIFFS)”-> Core Debug Level: “None”->Port: “COM port’ > According to your port connection

3- Now you can connect the USB port to the computer and before uploading the code below press one time the Reset button for the ESP32 CAM. This avoid somme problems during the upload.

If you have an error like this it might be probably because one of your GND on the ESP32 CAM is not working properly, please use anoder GND.

This means that the uploading is done. Now remove jumper wire between GPIO0 and GND and press one more time the Reset button of the ESP32 CAM. Now the device is flashed and you can use it to test the program. Take a look of the sketch below

The Arduino board was just used for the 5V plug-in.

const char* ssid     = "network SSID";   //your network SSID
const char* password = "********";   //your network password

String myScript = "/macros/s/AKfycbyLsBT9UVLB9MeRwUE5SWUHIUsRlbizeYtWNEVredzL_qHA_jL3xRnUpXRU9tBB36vPUA/exec";    //Create your Google Apps Script and replace the "myScript" path.
String myLineNotifyToken = "myToken=**********";    //Line Notify Token. You can set the value of xxxxxxxxxx empty if you don't want to send picture to Linenotify.
String myFoldername = "&myFoldername=Car_Safe";
String myFilename = "&myFilename=Image.jpg";
String myImage = "&myFile=";

#include <WiFi.h>
#include <WiFiClientSecure.h>
#include "soc/soc.h"
#include "soc/rtc_cntl_reg.h"
#include "Base64.h"

#include "esp_camera.h"

// WARNING!!! Make sure that you have either selected ESP32 Wrover Module,
//            or another board which has PSRAM enabled

//CAMERA_MODEL_AI_THINKER
#define PWDN_GPIO_NUM     32
#define RESET_GPIO_NUM    -1
#define XCLK_GPIO_NUM      0
#define SIOD_GPIO_NUM     26
#define SIOC_GPIO_NUM     27

#define Y9_GPIO_NUM       35
#define Y8_GPIO_NUM       34
#define Y7_GPIO_NUM       39
#define Y6_GPIO_NUM       36
#define Y5_GPIO_NUM       21
#define Y4_GPIO_NUM       19
#define Y3_GPIO_NUM       18
#define Y2_GPIO_NUM        5
#define VSYNC_GPIO_NUM    25
#define HREF_GPIO_NUM     23
#define PCLK_GPIO_NUM     22

//const int ledPin = 4;
const int motionPin = 13;
int motionValue;

void setup()
{
  //pinMode(ledPin, OUTPUT);
  pinMode(motionPin, INPUT);
  WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);
  
  Serial.begin(115200);
  delay(10);
  
  WiFi.mode(WIFI_STA);

  Serial.println("");
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);  
  
  long int StartTime=millis();
  while (WiFi.status() != WL_CONNECTED) 
  {
    delay(500);
    if ((StartTime+10000) < millis()) break;
  } 

  Serial.println("");
  Serial.println("STAIP address: ");
  Serial.println(WiFi.localIP());
    
  Serial.println("");

  if (WiFi.status() != WL_CONNECTED) {
    Serial.println("Reset");
    
    ledcAttachPin(4, 3);
    ledcSetup(3, 5000, 8);
    ledcWrite(3,10);
    delay(200);
    ledcWrite(3,0);
    delay(200);    
    ledcDetachPin(3);
        
    delay(1000);
    ESP.restart();
  }
  else {
    ledcAttachPin(4, 3);
    ledcSetup(3, 5000, 8);
    for (int i=0;i<5;i++) {
      ledcWrite(3,10);
      delay(200);
      ledcWrite(3,0);
      delay(200);    
    }
    ledcDetachPin(3);      
  }

  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer = LEDC_TIMER_0;
  config.pin_d0 = Y2_GPIO_NUM;
  config.pin_d1 = Y3_GPIO_NUM;
  config.pin_d2 = Y4_GPIO_NUM;
  config.pin_d3 = Y5_GPIO_NUM;
  config.pin_d4 = Y6_GPIO_NUM;
  config.pin_d5 = Y7_GPIO_NUM;
  config.pin_d6 = Y8_GPIO_NUM;
  config.pin_d7 = Y9_GPIO_NUM;
  config.pin_xclk = XCLK_GPIO_NUM;
  config.pin_pclk = PCLK_GPIO_NUM;
  config.pin_vsync = VSYNC_GPIO_NUM;
  config.pin_href = HREF_GPIO_NUM;
  config.pin_sscb_sda = SIOD_GPIO_NUM;
  config.pin_sscb_scl = SIOC_GPIO_NUM;
  config.pin_pwdn = PWDN_GPIO_NUM;
  config.pin_reset = RESET_GPIO_NUM;
  config.xclk_freq_hz = 20000000;
  config.pixel_format = PIXFORMAT_JPEG;
  //init with high specs to pre-allocate larger buffers
  if(psramFound()){
    config.frame_size = FRAMESIZE_UXGA;
    config.jpeg_quality = 10;  //0-63 lower number means higher quality
    config.fb_count = 2;
  } else {
    config.frame_size = FRAMESIZE_SVGA;
    config.jpeg_quality = 12;  //0-63 lower number means higher quality
    config.fb_count = 1;
  }
  
  // camera init
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed with error 0x%x", err);
    delay(1000);
    ESP.restart();
  }

  //drop down frame size for higher initial frame rate
  sensor_t * s = esp_camera_sensor_get();
  s->set_framesize(s, FRAMESIZE_VGA);  // UXGA|SXGA|XGA|SVGA|VGA|CIF|QVGA|HQVGA|QQVGA
}

void loop()
{
  motionValue = digitalRead(motionPin);

  if (motionValue == HIGH){
    SendCapturedImage();
  }
  
  delay(2000);
}

String SendCapturedImage() {
  const char* myDomain = "script.google.com";
  String getAll="", getBody = "";
  
  camera_fb_t * fb = NULL;
  fb = esp_camera_fb_get();  
  if(!fb) {
    Serial.println("Camera capture failed");
    delay(1000);
    ESP.restart();
    return "Camera capture failed";
  }  
  
  Serial.println("Connect to " + String(myDomain));
  WiFiClientSecure client_tcp;
  client_tcp.setInsecure();   //run version 1.0.5 or above
  
  if (client_tcp.connect(myDomain, 443)) {
    Serial.println("Connection successful");
    
    char *input = (char *)fb->buf;
    char output[base64_enc_len(3)];
    String imageFile = "data:image/jpeg;base64,";
    for (int i=0;i<fb->len;i++) {
      base64_encode(output, (input++), 3);
      if (i%3==0) imageFile += urlencode(String(output));
    }
    String Data = myLineNotifyToken+myFoldername+myFilename+myImage;
    
    client_tcp.println("POST " + myScript + " HTTP/1.1");
    client_tcp.println("Host: " + String(myDomain));
    client_tcp.println("Content-Length: " + String(Data.length()+imageFile.length()));
    client_tcp.println("Content-Type: application/x-www-form-urlencoded");
    client_tcp.println("Connection: keep-alive");
    client_tcp.println();
    
    client_tcp.print(Data);
    int Index;
    for (Index = 0; Index < imageFile.length(); Index = Index+1000) {
      client_tcp.print(imageFile.substring(Index, Index+1000));
    }
    esp_camera_fb_return(fb);
    
    int waitTime = 10000;   // timeout 10 seconds
    long startTime = millis();
    boolean state = false;
    
    while ((startTime + waitTime) > millis())
    {
      Serial.print(".");
      delay(100);      
      while (client_tcp.available()) 
      {
          char c = client_tcp.read();
          if (state==true) getBody += String(c);        
          if (c == '\n') 
          {
            if (getAll.length()==0) state=true; 
            getAll = "";
          } 
          else if (c != '\r')
            getAll += String(c);
          startTime = millis();
       }
       if (getBody.length()>0) break;
    }
    client_tcp.stop();
    Serial.println(getBody);
  }
  else {
    getBody="Connected to " + String(myDomain) + " failed.";
    Serial.println("Connected to " + String(myDomain) + " failed.");
  }
  
  return getBody;
}


String urlencode(String str)
{
    String encodedString="";
    char c;
    char code0;
    char code1;
    char code2;
    for (int i =0; i < str.length(); i++){
      c=str.charAt(i);
      if (c == ' '){
        encodedString+= '+';
      } else if (isalnum(c)){
        encodedString+=c;
      } else{
        code1=(c & 0xf)+'0';
        if ((c & 0xf) >9){
            code1=(c & 0xf) - 10 + 'A';
        }
        c=(c>>4)&0xf;
        code0=c+'0';
        if (c > 9){
            code0=c - 10 + 'A';
        }
        code2='\0';
        encodedString+='%';
        encodedString+=code0;
        encodedString+=code1;
        //encodedString+=code2;
      }
      yield();
    }
    return encodedString;
}

function doPost(e) {
  var myFoldername = e.parameter.myFoldername;
  var myFile = e.parameter.myFile;
  var myFilename = e.parameter.myFilename;
  //var myFilename = Utilities.formatDate(new Date(), "GMT", "yyyyMMddHHmmss")+"-"+e.parameter.myFilename;
  var myToken = e.parameter.myToken;
  
  var contentType = myFile.substring(myFile.indexOf(":")+1, myFile.indexOf(";"));
  var data = myFile.substring(myFile.indexOf(",")+1);
  data = Utilities.base64Decode(data);
  var blob = Utilities.newBlob(data, contentType, myFilename);
  
  // Save a captured image to Google Drive.
  var folder, folders = DriveApp.getFoldersByName(myFoldername);
  if (folders.hasNext()) {
    folder = folders.next();
  } else {
    folder = DriveApp.createFolder(myFoldername);
  }
  var file = folder.createFile(blob);    
  file.setDescription("Uploaded by " + myFilename);
  
  var imageID = file.getUrl().substring(file.getUrl().indexOf("/d/")+3,file.getUrl().indexOf("view")-1);
  var imageUrl = "https://drive.google.com/uc?authuser=0&id="+imageID;
    
  // Send a link message to Line Notify.
  var res = "Line Notify: ";
  try {
    var url = 'https://notify-api.line.me/api/notify';
    var response = UrlFetchApp.fetch(url, {
      'headers': {
        'Authorization': 'Bearer ' + myToken,
      },
      'method': 'post',
      'payload': {
          'message': imageUrl
      }
    });
    res += response.getContentText();
  } catch(error) {
    res += error;
  } 
    
  return  ContentService.createTextOutput(myFoldername+"/"+myFilename+"\n"+imageUrl+"\n"+res);
}

Credits

kevin likane

1 project • 1 follower

Car Safe

Story

Introduction

Motivation

Contact

Solution

Now Implemented

Self Implementation

Code

Car_Safe.ino

Google App Script

Base64.ccp/Base64.h

Credits

kevin likane

Comments

Embed the widget on your own site

Car Safe

Car Safe

Story

Introduction

Motivation

Contact

Solution

Now Implemented

Self Implementation

Code

Car_Safe.ino

Google App Script

Base64.ccp/Base64.h

Credits

kevin likane

Comments

Related channels and tags