Pratik Y.

My name is Pratik and I am 14 years old. I go to the High School of Math, Science, and Engineering at City College. The starter project that I chose was the TV-B-GONE. This device uses infrared light to turn of any TV like a normal remote would do. My main project is the biometric lock box that uses a keypad and finger scanner. I chose these projects because i have limited experience but as time goes on, I hope to be very skilled later because of Blue Stamp.

Name
Pratik Y.
Area of Interest
Robotics
School
The Highschool of Math, Science, and Engineering
Grade
Incoming Sophomore

Final Project

For my final milestone, I have added a feature that would be help for many people around. What I added was a way to enroll anyone’s finger in which it would stay into the micro controller.  To do this I had to modify my “FPS_Enroll” code to make it so that the words would print on the Liquid Crystal Display. I then had find a way to implement this code into my final code. Something I had trouble with while trying to get this to work is making it enroll it as most of the time it would say “Failure to Enroll”. What I did to fix it was to make sure that I was placing and taking my finger when it told me to. Another difficulty was with the LCD and fingerprint scanner. They would turn off and on by themselves. To fix this I had to resolder the wires because they were loose. For my next modification I would like to add facial and voice recognition.

My Circiut

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Reflection

Throughout my journey at Blue Stamp, I have learned a lot.  First, I learned how to code and how to use power tools which I have never used before. I also learned some lessons like to not get frustrated from small errors and issues and to keep trying. I also learned have fun is the best way to motivate yourself to do more. This was a very fun experience I would definitely come next year.

Third Milestone

For my third milestone, I have added a LCD display which displays what it is to be done. I think that this is a huge milestone because now I am able to verify whether my password was wrong or right or whether my finger was verified correctly.  Some things I had trouble with is the servo and the LCD sharing the same power. They were sharing the same power so they were only use half of their potential. To fix this, I plugged them into separate ground pins. Also making the hole for the LCD  was absolutely annoying because it would never fit. For my future modification I will program it to be able to enroll other finger without using a computer.

Second Milestone

For my second milestone, I designed my box so that the the keypad, fingerprint sensor and servo motor are could protect the box from opening easily. The hardest part of this milestone was screwing pieces into inconvenient corners  and dremeling holes. First I worked on making holes for the fingerprint scanner and the battery as they were the easiest. Then I hot glued the keypad to the box and made a hole where the wires would connect. Then I glued the servo motor so that I could lock the box. I lastly attached hinges that would help lock the box.

First Milestone

For my first milestone, I made got the keypad, fingerprint sensor, and servo motor to work together to create security for my future biometric lock box. The most difficult part of this milestone was the coding as it was difficult to configure the code into how I wanted it to work. First I had to configure the fingerprint sensor to enroll my finger and then recognize that same finger again. Next I had too make sure the keypad was connected correctly and working.  I then combined the code of the keypad and fingerprint sensor so that if one worked, it had to move onto the next step. Lastly I attached the servo motor to the code and made sure it worked. Once the code for the servo motor was implied in my code, I was set.

Starter Project

For my Starter Project, I have created a TV-B-GONE which is a remote that shoots infrared LED light like a normal remote. This project consists of batteries to power it obviously, three resistors, which moderate the power going into the LEDs, three capacitors, which smooths the current flow throughout the circuit board, five transistors, which control the power going into the infrared LEDs, a power button, five LEDs, and a circuit board (PCB). The wires that attaches the batteries to the circuit board caused some problems because the coiled part of the wire was too short to fit in to the circuit board. I had to rip a bit of rubber that insulates the wire off and then I tinned it so it wouldn’t untangle. Another issue I had to deal with was when I faced the transistor the wrong way. It took a while to de-solder and this made it very difficult to put it the right way again. I learned a lot from this experience like soldering and de-soldering. I also learned that I have to read instructions carefully because sometimes mistake are hard to fix.  

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