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31. Human Detection box - Version 2.0

Hello everyone!

This title may have been familiar to you if you had referred to my previous projects. Today I am going to present you the second version of my human detection box. The setup, connections, coding, supplies are almost similar to those of the first version, except for the OLED display module and the replacement of relay module by the Red LED. 

Human detection box - Version 1.0

Supplies

  • Arduino Uno
  • USB 2.0 Type A/B cable
  • Solderless Breadboard
  • Passive Infra-red (PIR) sensor module
  • LED - Red
  • 0.96" OLED display module - featuring 128 x 64 pixels
  • Active Buzzer module (KY-012)
  • Resistor - 220 Ω
  • Power Bank - 10000mAh
  • Male-to-Male Jumper wires - 10cm (x2)
  • Female-to-Male Jumper wires - 20 cm (x15)

Setup





Your setup must look somewhat similar to those shown in the images above.

Connections

PIR sensor module
  • (+) - 5V
  • (-) - Ground (GND)
  • S - D6
0.96" OLED display module
  • GND - Ground 
  • VCC - 5V
  • D0 - D10
  • D1 - D9
  • RES (Reset) - D13
  • DC - D11
  • CS - D12
Active Buzzer module (KY-012)
  • (+) - 5V
  • (-) - GND
  • S - D5
LED
  • Anode (+) - D3
  • Cathode (-) - GND

Coding

The incomplete codes for the first version of the human detection box are shown in the first version's page. Now let me explain you about preparing the sketch for this project.
Declare the global variable for each component. I have used U8glib by Oliver to code for the OLED display module.  Create a variable to read the state of the PIR sensor. In the void setup() function, call the pinMode () function and state whether each component is INPUT or OUTPUT. PIR sensor sends a HIGH signal when it detects a source of IR radiation. So when the HIGH signal is sent, the pins of the Red LED and buzzer must be set HIGH. You can use the 'if...else' function for this purpose. 
Now let's move on to the coding of our OLED display module. Before displaying anything on the OLED display module, you must call the 'u8g.firstPage()' function. During u8g.nextPage(), set the font style and its position. Use the u8g.drawStr() function to print text on the OLED display module. To learn how to use these functions, please refer to the User reference manual from the hyperlink in this section. When the PIR sensor detects the IR source, the OLED display module must display 'Intruder Alert', and when it doesn't, the display module must display 'Box status: Activated'.
If you have any questions with the coding, please feel free to comment below or send an email to arduinoprojectsbyr@gmail.com.

Final Look

If you have any questions, or suggestions, about this project, please feel free to comment below or send an email to arduinoprojectsbyr@gmail.com.

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