Starting Circuits

See Parallel (Left) and Series (Middle & Right)

Design Process-

• Define The Problem -Our circuit should be able to detect Covid, using LED's and an alarm system to render risk factors which show symptoms of covid (they include dry cough, high temperature, and oxygen levels)

• Alternative Solutions- Some ways we could have improved our final product was to make the wires more evenly spread out rather than making it clumped. This would in turn make it easier to debug and more aesthetically pleasing.

• Evaluate And Select A Solution- We evaluated and selected this specific solution based on our logic expression and corresponding circuit in Virtual-Circuit lab. We also selected this solution based on the resources we were given to make this circuit such as the limited wires, the limited chips, and the limited switches.

• Detail The Design- We color coded our wires to be the following inputs-

  • Red-->positive

  • Black--> negative

  • Yellow/( and blue on the physical circuit because we did not have enough yellow wires lol)---> dry cough input

  • Green--> temperature input

  • Purple--> oxygen input

  • The rest are mainly outputs of the different inputs in various combinations

• Defend The Design- Our design not only lights the led when the specific inputs are on, but is also easy to distinguish by color code.

• Manufacture and Test the Design- Some ways we manufactured our design was by first designing the circuit on Tinkercad. The reason we chose to design our circuit virtually for the second time is because it would be far easier to design and copy the circuit from a virtual website like Tinkercad than to do it physically first and risk more mistakes the first time. Designing the circuit on Tinkercad allowed us to carefully map out and organize our wires into particular colors, which in turn helped us tremendously when we started building the circuit physically.

• Evaluate the Performance of the Design- The final performance worked successfully, the alarm system worked with their respective inputs. However, the temperature switch was deficient and whenever we switched the temperature it still lit up the subsequent switch. This was primarily due to the fact that their must have been an incorrect wiring between the temperature input and the 4 different alarm signals. This is because the very same circuit worked perfectly with all its inputs in Tinkercad.

• Prepare the Final Design Report- We finished preparing our entire design by the end of Thursday, although we finished doing the virtual circuit and Tinkercad, building the circuit in person took a lot of time and effort and debugging it took even longer. This caused there to be tiny errors that we had to look at and fix. While the process was indeed difficult, the result was worth the wait and the alarm worked successfully!