Embedded Files
Circuit Activities
Circuit Activities
June24_Parallel Circuit.movParallel Circuit
The goal of this activity was to create a functional parallel circuit out of the provided materials of wires, buttons, LEDs, a battery pack, and a foam board. A parallel circuit means that we created two pathways that could light up the LED, no matter which button was presses, the LED would recive power from the batteries.
Series Circuit
The goal of this activity was to create a funtional series circuit with the same set of materials as provdided for the parallel. While the parallel circuit could light up with either one of the buttons pressed, the series circuit required both buttons to be pressed in order to power both LEDs.
June25.MOVSemi Conductor Simulation
The goal of this activity was to simulate the semiconductor component of an actual circuit. This works by a person touching both paper clips simultaneously in order to light up an LED. This works as each of the transistors amplifies the minimal current that a human produces, converting it into enough energy to power the LED.
Heart Attack Monitor
The goal of this project was to create a functional monitor that could detect if someone was at risk of having a heart attack, based on three different indicators of elevated troponin, ST changes on ECG readout, and drops in SpO. We designed our circuit with switches rather than actually monitoring these changes, in order actually be able to test our work.
Circuit Planning and Simulations
EveryCircuit Logic Circuit
EveryCircuit Logic Circuit
This is the first step of our process to evenually reach a functional breadboard. To create the EveryCircuit diagram we first began with drawing out a truth table in order to deterimine how each indicator should effect the LED output. We next turned our truth table into a series of logic equations. Based on the logic equation we were then able to convert this into the final circuit diagram seen above.
Screen Recording 2026-06-30 at 11.38.56 PM.movTinkerCAD Simulation
TinkerCAD Simulation
After completing our EveryCircuit diagram we began to convert it into a simulated breadboard to evetually plan out our physical circuit. While what is shown above is the entire finished circuit, when we were actually making it each component was built one at a time and then built on the inperson model. After we ensured that each component worked individually on our model we continued on to the next component on the TinkerCAD simulation. Ultimately we were able to get our TinkerCAD simulation mostly working, however the program indicated that there may be some isues with chips overheating.
Physical Circuit
Jun25_AlarmCircuit.movAlarm Circuit
The alarm circuit was one of our first steps in building the physical circuit as we needed the completed part in order to implement it into our logic circuit. The alarm circuit utilized a 555 timer chip to control a modulating alarm sound. The current from a battery first passed through two resistors of different values in order to charge a capacitor. The 555 chip then observed the filling, and eventually emptying of the capacitor. Once the capacitor was at a certain volume full of charge, a transistor in the chip connected, allowing the capacitor to be discharged back through the chip, powering the alarm. Because the capacitor is storing charge and releasing it at certain intervals, the alarm is not a constant sound, but instead a modulation.
Green LED
Once our TinkerCAD model of the green LED component worked we transfered it onto our actual breadboard. When all three of the switches were off the green LED would turn on. If just one of the switches were on, the green LED would turn off.
IMG_7313.MOVYellow + Green LED
After we were able to add the yellow LED onto the TinkerCAD simulation, we implemented it onto our same physical model that had the green LED. The yellow LED used similar concepts as the green one, the only difference being that it required one switch to be on in order to be powered.
Final Circuit
Our final circuit added both the red LED and the alarm circuit to our existing one that was comprised of the yellow and green logic components. The red LED turned on if two switches were on, and the alarm if all switches were on. This simulated what would happen in an actual situation if none, one, two or all indicators were present.
Reason For Failure
Our group ultimately was unsuccesful in completing the final version of our project. We were very close, however, we just needed to implement the final component with the flip-flop chip and 555 to create periodic monitoring. We were able to get all components working individually, but we were unsuccessful in adding all of them together with the flip-flop. This was likely due to incorrect wire placement and unreliable connection in certain places, if we had more time we would have been able to troubleshoot and find any incorrect connections. This probably the reason for our final product not working, as our TinkerCAD simulation displays that the physical circuit should have worked differently, meaning that our only area for error was something relating to the physical construction.
Backyard Brains Activity
This activity simulated what would actually monitored for a patient using our device. While this wasn't a component in our final project, it helped us to understand what real monitoring looked like.
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