Sam Technology Professionals
  • PIC16F877 Project Proteus Code LOCK SYSTEM (Inc Download Link)

    82 views 1 month ago
    Link is given below to download the project file and program source and hex files.
    This is a relay on/off system what you can also use as a programmed keypad based code lock system. I used microchip PIC micro-controller which is a 40 pins DIP and 8-bit micro-controller.
    Once it is powered on The LED in the circuit will light up. This makes you sure that power is connected. This LED can also be used for another relay you just need to use another transistor as a switch in order to turn the relay on/off. So once the board is powered up you'll see the display on the 16x2 character LCD (162JD). Now as i told in the video we enter the code by using the 4x3 matrix numeral keypad. Firstly it will say to press * and when you'll press it it will ask to enter the code. Now you enter the code what is pre-saved in the HEX file. Now if you don't want that code, simply enter the master code (which can also be changed in the source code file) of five (5) digits, it will then ask for the new code. You enter in it and hence the screen is back at press *. Now your new code is saved.
    You press *, then enter your newly saved four (4) digits code and press # the output pin will be turned high of the micro-controller where you connect the relay and that power LED will be turned off.
    Now simply press the zero button and release it it will turn off the connected relay.
    If the code is entered wrong again and again there will be dialog "Access Denied" will appear. In order to clear it you need to reset the PIC16F877 as i have the red button on it.
    I have included the Proteus project file, full schematic, source code & HEX file in the archive what you can directly download by the link given below:
    ***LINK*** (The first link is currently not working) We'll update it soon.
    http://samtechpro.blogspot....
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    • PIC16F877 Project Proteus Code LOCK SYSTEM (Inc Download Link) - Duration: 3 minutes, 15 seconds.

      • 1 month ago
      • 82 views
      Link is given below to download the project file and program source and hex files.
      This is a relay on/off system what you can also use as a programmed keypad based code lock system. I used microchi...
    • Build Power Bank With any 12v Battery (DIY Part 1) - Duration: 5 minutes, 4 seconds.

      • 2 months ago
      • 129 views
      In this project i'm going to show you how to build a complete power pack (using modules like step-up and down converters also known as buck and boost converters) that not only charge the cell phone...
    • Build Arduino UNO Oscilloscope with Nokia 3310 LCD - Duration: 3 minutes, 51 seconds.

      • 2 months ago
      • 53 views
      DIY Project : Arduino Sketch & Schematic is Here:
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      • 2 months ago
      • 23 views
      In this video one of our member tried to share his idea on how to build a solder wire roll holder From scratch and from almost useless and scrap pcs of wood laying there somewhere. You may gonna wa...
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      • 3 months ago
      • 206 views
      I designed this circuit for ferrite core transformer to build an inverter. But during first test the MOSFETs blown immediately. So, in this video i'm showing how i figured out what happened. And i'...
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      • 3 months ago
      • 51 views
      Build this DSLR camera slider may cost you only $20-$30 only. It can drive any heavy DSLR camera up-to 7Kg of weight. The output video is smooth enough to shoot a professional and perfect videos. ...
      • CC
    • Camera Slider Built From Scratch Test - Duration: 27 seconds.

      • 4 months ago
      • 24 views
      Watch full video contains details and building process here:
      https://www.youtube.com/edit?o=U&video_id=UBnLJCXOy0w
    • DIY Disassembling DVD Rom Salvage Motors - Duration: 2 minutes, 39 seconds.

      • 4 months ago
      • 71 views
      Tear down DVD rom and salvage motor. A DVD rom or a CD rom etc contains four to five motors
    • Build Dynamic Mic Preamp Easily (STP DIY) 2nd Version - Duration: 6 minutes, 32 seconds.

      • 6 months ago
      • 136 views
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    • Build Inverter Uninterrupted Power Supply - Duration: 3 minutes, 33 seconds.

      • 7 months ago
      • 133 views
      Model Number : STP-MSW-6W50
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    • DIY Build your own Tremolo Phaser Effect Pedal (STP DIY) - Duration: 7 minutes, 26 seconds.

      • 2 years ago
      • 1,336 views
      Wanna Build a Tremolo Guitar Effect Pedal.
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      Download Circuit Diagram by the link given below.
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    • Build Good and Easy Guitar Amplifier (Circuit Inc) - Duration: 3 minutes, 50 seconds.

      • 3 years ago
      • 121 views
      Guitar Amplifier Made By "Sam Technology Professionals"
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      • CC
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