BreadBoard Projects
Apr 2019 - Jul 2019
The BreadBoard circuits included in this project were completed as part of a course I took while dual enrolled at Greenfield Community College in high school. The course was "Intro to Engineering, Science, Tech, and Society" and mainly focused on electrical & computer engineering concepts such as boolean algebra, circuit logic, and arduino programming. This collection of BreadBoard assignments gave me a foundational knowledge of circuit logic that has been helpful to me in my engineering coursework and will continue to benefit me in my career.
Project Walkthrough
Look through the images and descriptions below to see how this project came to life!
01
Simple Inverter Circuit
The image to the right shows the very first circuit logic project completed for this course. It is simply 6 inverters or "NOT" gates placed in series using an IC-7404 such that the output is the same as the input. I used a digital probe to verify that the signal "flipped" from 1 to 0 back to 1 after each NOT gate with the final output being 1. The top green wire is the input and the bottom orange wire is the output.
02
Equivalent Logic
This circuit was a significant jump in complexity from the simple inverter loop shown above. The goal of this circuit was to demonstrate equivalent logic to reach the same result. I was given an initial boolean algebra equation to describe the circuit on the left with the red LED. I then had to simplify the circuit using boolean algebra to create the simplified circuit on the right with the green LED. It can easily be seen that the circuit on the right using less wiring and less logic gates on the chips, thus using less materials, and saving processing time in larger circuits. The center row is simply inputs and outputs to the two circuits, with the result being that both LEDs will either be on or off, demonstrating that the circuits are equivalent.
03
Two-Bit Adder & Decoder
Increasing in complexity once again, the next circuit I completed was a 2-Bit binary adder circuit with a binary to decimal decoder. I had to design this circuit using boolean algebra in order to find the logic for adding 2x 2-Bit binary numbers together, and getting 3-bit output. This 3-bit output was then fed into a 74HC42 binary to decimal decoder chip, which was connected to a 7-segment display. The pieces of tape indicate A0,A1,B0, and B1 to enter the binary bits as 1s and 0s. The result was then displayed as a decimal on the 7-segment display.
Project Gallery
Explore the photos below to see more circuits that I made !
