描述

一、簡介

BrainyLED是一種接近啟用二極管，其中 HC-SR04 傳感器與 arduino 連接，如果在傳感器附近檢測到物體，則提供觸發器。此觸發器的設置方式使用戶可以獲得準確的讀數。

因此，用戶定義了一個閾值，以便只要傳感器值小于該閾值，它就會提供一個用于打開LED 的觸發器。

使用BOLT云設置警報系統，以便在 LED亮起時提供電報消息并發送消息“ObjectDetectedInProximity!” .

2. 示范

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電報警報

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實際連接

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服務器響應

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3. 示意圖

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連接圖

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配置文件（Conf.py）

此文件包含有關 Api 的所有詳細信息和提供成功連接的其他必要值。

"""Configurations"""  
bolt_api_key = ""     # This is your Bolt Cloud API Key  
device_id = "BOLTXX"           # This is the device ID  
telegram_chat_id = "@XXXX"   # This is the channel ID of the created Telegram channel.  
telegram_bot_id = "botXXXXX"       # This is the bot ID of the created Telegram Bot.  

Python 文件 ( proximity.py )

包含用于使用串行輸入與 arduino 建立連接的 BOLT IoT 代碼。

import requests  
import conf  
from boltiot import Bolt  
import json, time  
mybolt = Bolt(conf.bolt_api_key, conf.device_id) #Create object to fetch data  
response = mybolt.serialRead('10')  
print (response)  
def send_telegram_message(message):  
   """Sends message via Telegram"""  
   url = "https://api.telegram.org/" + conf.telegram_bot_id + "/sendMessage"  
   data = {  
       "chat_id": conf.telegram_chat_id,  
       "text": message  
   }  
   try:  
       response = requests.request(  
           "POST",  
           url,  
           params=data  
       )  
       print("This is the Telegram response")  
       print(response.text)  
       telegram_data = json.loads(response.text)  
       return telegram_data["ok"]  
   except Exception as e:  
       print("An error occurred in sending the alert message via Telegram")  
       print(e)  
       return False  
while True:  
   response = mybolt.serialRead('10')  #Fetching the value from Arduino  
   data = json.loads(response)  
   status_value = data['value'].rstrip()  
   if str(status_value) == 'HIGH':  
       print ("Status is", status_value)  
       message = "Object detected in proximity!"  
       telegram_status = send_telegram_message(message)  
   else:  
        print ("Status is LOW!",status_value)  
   time.sleep(10)  

Arduino代碼

為帶超聲波傳感器的智能 LED 提供的 Arduino 代碼。

#include 
Ultrasonic ultrasonic(5, 6);  
int LED = 2;  
int threshold = 100;  
void setup() {  
 // put your setup code here, to run once:  
 Serial.begin(9600);  
 pinMode(LED, OUTPUT);  
}  
void loop() {  
 // put your main code here, to run repeatedly:  
 int distance = ultrasonic.distanceRead();  
 if(distance< threshold)  
 {  
 digitalWrite(LED, HIGH);  
 Serial.println("HIGH");  
 delay(10000);  
 }  
 else{  
 digitalWrite(LED,LOW);  
 }  
 delay(1000);  
}