Published February 12, 2020

IOT. Intelligent waste management

IOT. Smart trash cans that remotely warn if they're full, if they smell bad, or if they're being set on fire. Values are sent to ThingSpeak

IntermediateFull instructions provided5 hours1,754

Things used in this project

Hardware components

Beduino kit

This is a educational kit. It was created in spain with pieces of My Robot Time Company. The board is an arduino Leonardo board with motor drivers. Use the main board and pieces

Espressif ESP8266 ESP-01

ESP-01S Wifi to Serial Shield

Flame sensor

Air quality sensor

DHT11 Temperature & Humidity Sensor (3 pins)

dupont cables

Software apps and online services

Blocklyduino

Arduino IDE

Story

Intelligent waste bins

To help city councils or another government institutions my students have created a system that send different information about the public waste bins. This is a prototype.

This system send periodically information to ThingSpeak about:

Temperature
Humidity
Level of trash
Fire
Quality of the air

In function of these values actions can be done. For example, if the trash is full or the quality of air is poor would be interesting to send the trash truck to pick the same. With Fire signal you can monitoring if the trash bin is burning and send the firemen.

Architecture of the solution

ThingSpeak

In thingSpeak account is created. The most important is to assign the fields to use and the API key to write in the code configuration

The configuration of this channel is (Spanish):

5 fields are activated. These field are received from the our board.

Don´t forget to write down the API key for writting, becuase is necesary to configure the block to send to thingspeak

ESP-01 / ESP-01S

Firstable need to load the AT firmware. Is important because the library send different AT command to connect to the wifi. The speed is very important, because you need to configure in the inicialization block of ESP8266. I have attached the source code in Blockly and Arduino.

With this tool esp8266_flasher.exe, you need to load this firmware. ai-thinker-0.9.5.2-9600.bin. The firware is attached in the code to download

Writing at 0x0007ec00... (99 %)

Leaving...

Failed to leave Flash mode

I used the FTDI and this circuit to flash the ESP-01

Blocklyduino and MRT-Duino board

This is a tool to create arduino code using graphical blocks. It is ready for MRT-duino board but you can change the configuration to works with other arduino boards. You can find information about the pins and ports of the board here.

My students do many projects using this tool because it allows them to learn computer thinking without getting into the knowledge of a specific programming language.

Information about the libraries to install depending of the sensor or actuator used in the project, click here.

My students do many projects using this tool because it allows them to learn computer thinking without getting into the knowledge of a specific programming language.

Information about the libraries to install depending of the sensor or actuator used in the project, click here.

In this case these libraries were used:

DHT Adafruit : to use the DHT sensors
Adafruit Unified sensor: to use the DHT sensors and other sensors
IOT_ts: custom library to manage connectivity with ThingSpeak

More Pictures

Flame sensor and Ultrasonic to measure the distance

Components connection

DHT11

Signal to Port 9. S pin of this port
VCC to 5V. + pin of the any port
Ground to GND. - pins of the any port

Ultrasonic

Trigger to Port 2. S pin of this port
Echo to Port 3. S pin of this port
VCC to 5V. + pin of the any port
Ground to GND. - pins of the any port

Air quality sensor

Sensing pin to Port 10. S pin of this port
VCC to 5V. + pin of the any port
Ground to GND. - pins of the any port

Flame Sensor

Sensing pin to Port 5. S pin of this port
VCC to 5V. + pin of the any port
Ground to GND. - pins of the any port

ESP8266-01 with adaptor

Tx to Port 15. S pin of this port. Tx--Rx
Rx to Port 16. S pin of this port Rx--Tx
VCC to 5V. + pin of the any port
Ground to GND. - pins of the any port

/*******************************************
***    ARDUINO CODE -- MRTDUINO BOARD    ***
***       Logix5 -- www.logix5.com       ***
********************************************/
#include <IOT_ts.h>

#include "DHT.h"

Iot_device iot;

unsigned int  Estado;
long  Detectado;
DHT dht_5(5,DHT11);

long ultrason_15() {
   long duration, distance;
   digitalWrite(15,LOW);
   delayMicroseconds(2);
   digitalWrite(15, HIGH);
   delayMicroseconds(10);
   digitalWrite(15, LOW);
   duration = pulseIn(16, HIGH);
   distance = duration/58;
   return distance;
}

long temps15 = 0 ;

void setup()
{
  Serial1.begin(9600);

  Serial.begin(115200);

  Estado = 0;

  Detectado = 0;

  dht_5.begin();

  pinMode(15, OUTPUT);
  pinMode(16, INPUT);
  pinMode(18,INPUT);
    iot.Iot_thinkspeak("sadasdasdasdas");
  iot.Mode_ESP8266(1,3000,true);
  iot.Credentials_ESP8266("xxxxxxxxxxxxxx","xxxxxxxxxxxxxxxxxxx",5000,true);

}


void loop()
{
    if ((millis()-temps15)>=15*1000) {
      temps15=millis();
      switch (Estado) {
      case 0:
        iot.thingSpeakWrite(1,dht_5.readTemperature(),true);
        Estado = 1;
        break;
       case 1:
        iot.thingSpeakWrite(2,dht_5.readHumidity(),true);
        Estado = 2;
        break;
       case 2:
        iot.thingSpeakWrite(3,ultrason_15(),true);
        Estado = 3;
        break;
       case 3:
        iot.thingSpeakWrite(4,map(analogRead(A9),0,1023,0,100),true);
        Estado = 4;
        break;
       case 4:
        iot.thingSpeakWrite(5,Detectado,true);
        Estado = 0;
        break;
      }
    }
    if (Detectado == 0 && !digitalRead(18)) {
      Serial.println("Llama detectada");
      Estado = 4;
      Detectado = 1;
      delay(100);

    }
    if (Detectado == 1 && digitalRead(18)) {
      Serial.println("No hay llama");
      Detectado = 0;
      delay(100);

    }

}

<xml xmlns="http://www.w3.org/1999/xhtml"><block type="arduino_setup" x="0" y="0"><statement name="MySetup"><block type="iot_init_iot"><field name="PINBAUDIOS">9600</field><next><block type="iot_init_thinkspeak"><value name="APIwrite"><shadow type="text"><field name="TEXT">7MWRTNYIWQ3T3E0X</field></shadow><block type="text"><field name="TEXT">sadasdasdasdas</field></block></value><next><block type="serial_init"><field name="PINBAUDIOS">115200</field><next><block type="iot_configmode_esp8266"><field name="MODE">1</field><field name="LOGIC">TRUE</field><value name="delaytime"><shadow type="math_number"><field name="NUM">3000</field></shadow></value><next><block type="iot_confignetwork_esp8266"><field name="LOGIC">TRUE</field><value name="ssid"><shadow type="text"><field name="TEXT">name net</field></shadow><block type="text"><field name="TEXT">xxxxxxxxxxxxxx</field></block></value><value name="password"><shadow type="text"><field name="TEXT">******</field></shadow><block type="text"><field name="TEXT">xxxxxxxxxxxxxxxxxxx</field></block></value><value name="delaytime"><shadow type="math_number"><field name="NUM">3000</field></shadow><block type="math_number"><field name="NUM">5000</field></block></value><next><block type="variables_declare"><field name="VAR">Estado</field><field name="TYPE">unsigned int</field><value name="VALUE"><block type="math_number"><field name="NUM">0</field></block></value><next><block type="variables_declare"><field name="VAR">Detectado</field><field name="TYPE">long</field><value name="VALUE"><block type="math_number"><field name="NUM">0</field></block></value></block></next></block></next></block></next></block></next></block></next></block></next></block></statement><statement name="MyLoop"><block type="tempo_no_delay"><field name="unit">s</field><value name="DELAY_TIME"><shadow type="math_number"><field name="NUM">5</field></shadow><block type="math_number"><field name="NUM">15</field></block></value><statement name="branch"><block type="controls_switch"><mutation casebreak="4"></mutation><value name="SWVAR"><block type="variables_get"><field name="VAR">Estado</field></block></value><value name="CASE0"><block type="math_number"><field name="NUM">0</field></block></value><statement name="DO0"><block type="iot_sendthinkspeak_esp8266"><field name="LOGIC">TRUE</field><value name="field"><shadow type="math_number"><field name="NUM">1</field></shadow></value><value name="value"><shadow type="math_number"><field name="NUM">1</field></shadow><block type="dht_sensor"><field name="PIN_DHT">5</field><field name="OUTPUT_TYPE">0</field><field name="OUTPUT_VALUE">0</field></block></value><next><block type="variables_set"><field name="VAR">Estado</field><value name="VALUE"><block type="math_number"><field name="NUM">1</field></block></value></block></next></block></statement><value name="CASE1"><block type="math_number"><field name="NUM">1</field></block></value><statement name="DO1"><block type="iot_sendthinkspeak_esp8266"><field name="LOGIC">TRUE</field><value name="field"><shadow type="math_number"><field name="NUM">1</field></shadow><block type="math_number"><field name="NUM">2</field></block></value><value name="value"><shadow type="math_number"><field name="NUM">1</field></shadow><block type="dht_sensor"><field name="PIN_DHT">5</field><field name="OUTPUT_TYPE">0</field><field name="OUTPUT_VALUE">1</field></block></value><next><block type="variables_set"><field name="VAR">Estado</field><value name="VALUE"><block type="math_number"><field name="NUM">2</field></block></value></block></next></block></statement><value name="CASE2"><block type="math_number"><field name="NUM">2</field></block></value><statement name="DO2"><block type="iot_sendthinkspeak_esp8266"><field name="LOGIC">TRUE</field><value name="field"><shadow type="math_number"><field name="NUM">1</field></shadow><block type="math_number"><field name="NUM">3</field></block></value><value name="value"><shadow type="math_number"><field name="NUM">1</field></shadow><block type="ultrasonic_ranger_sensor"><field name="PIN_TRIG">15</field><field name="PIN_ECHO">16</field></block></value><next><block type="variables_set"><field name="VAR">Estado</field><value name="VALUE"><block type="math_number"><field name="NUM">3</field></block></value></block></next></block></statement><value name="CASE3"><block type="math_number"><field name="NUM">3</field></block></value><statement name="DO3"><block type="iot_sendthinkspeak_esp8266"><field name="LOGIC">TRUE</field><value name="field"><shadow type="math_number"><field name="NUM">1</field></shadow><block type="math_number"><field name="NUM">4</field></block></value><value name="value"><shadow type="math_number"><field name="NUM">1</field></shadow><block type="Gas_sensor"><field name="PIN_GAS">A9</field><field name="OUTPUT_VALUE">0</field></block></value><next><block type="variables_set"><field name="VAR">Estado</field><value name="VALUE"><block type="math_number"><field name="NUM">4</field></block></value></block></next></block></statement><value name="CASE4"><block type="math_number"><field name="NUM">4</field></block></value><statement name="DO4"><block type="iot_sendthinkspeak_esp8266"><field name="LOGIC">TRUE</field><value name="field"><shadow type="math_number"><field name="NUM">1</field></shadow><block type="math_number"><field name="NUM">5</field></block></value><value name="value"><shadow type="math_number"><field name="NUM">1</field></shadow><block type="variables_get"><field name="VAR">Detectado</field></block></value><next><block type="variables_set"><field name="VAR">Estado</field><value name="VALUE"><block type="math_number"><field name="NUM">0</field></block></value></block></next></block></statement></block></statement><next><block type="controls_if"><value name="IF0"><block type="logic_operation"><field name="OP">AND</field><value name="A"><block type="logic_compare"><field name="OP">EQ</field><value name="A"><block type="variables_get"><field name="VAR">Detectado</field></block></value><value name="B"><block type="math_number"><field name="NUM">0</field></block></value></block></value><value name="B"><block type="logic_negate"><value name="BOOL"><block type="Flame_status_sensor"><field name="PIN_FLAME">18</field></block></value></block></value></block></value><statement name="DO0"><block type="serial_print"><value name="CONTENT"><shadow type="text"><field name="TEXT">text</field></shadow><block type="text"><field name="TEXT">Llama detectada</field></block></value><next><block type="variables_set"><field name="VAR">Estado</field><value name="VALUE"><block type="math_number"><field name="NUM">4</field></block></value><next><block type="variables_set"><field name="VAR">Detectado</field><value name="VALUE"><block type="math_number"><field name="NUM">1</field></block></value><next><block type="base_delayms"><value name="DELAY_TIME"><shadow type="math_number"><field name="NUM">1000</field></shadow><block type="math_number"><field name="NUM">100</field></block></value></block></next></block></next></block></next></block></statement><next><block type="controls_if"><value name="IF0"><block type="logic_operation"><field name="OP">AND</field><value name="A"><block type="logic_compare"><field name="OP">EQ</field><value name="A"><block type="variables_get"><field name="VAR">Detectado</field></block></value><value name="B"><block type="math_number"><field name="NUM">1</field></block></value></block></value><value name="B"><block type="Flame_status_sensor"><field name="PIN_FLAME">18</field></block></value></block></value><statement name="DO0"><block type="serial_print"><value name="CONTENT"><shadow type="text"><field name="TEXT">text</field></shadow><block type="text"><field name="TEXT">No hay llama</field></block></value><next><block type="variables_set"><field name="VAR">Detectado</field><value name="VALUE"><block type="math_number"><field name="NUM">0</field></block></value><next><block type="base_delayms"><value name="DELAY_TIME"><shadow type="math_number"><field name="NUM">1000</field></shadow><block type="math_number"><field name="NUM">100</field></block></value></block></next></block></next></block></statement></block></next></block></next></block></statement></block></xml>

Credits

OscarF10

4 projects • 4 followers

I am telecommunication engineer.In my free time I am doing things related of robotics,technology for students in our courses in logix5

IOT. Intelligent waste management

Things used in this project

Hardware components

Software apps and online services

Story

Intelligent waste bins

Architecture of the solution

ThingSpeak

ESP-01 / ESP-01S

Blocklyduino and MRT-Duino board

Components connection

Code

WasteProject.ino

WasteProject

Blocklyduino

Examples with Blocklyduino

Credits

OscarF10

Comments

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IOT. Intelligent waste management

IOT. Intelligent waste management

Things used in this project

Hardware components

Software apps and online services

Story

Intelligent waste bins

Architecture of the solution

ThingSpeak

ESP-01 / ESP-01S

Blocklyduino and MRT-Duino board

Components connection

Code

WasteProject.ino

WasteProject

Blocklyduino

Examples with Blocklyduino

Credits

OscarF10

Comments

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