Electrical Subsystem

The electrical subsystem contains all the components and circuitry that allow the vests and gloves to function. The largest challenge we faced was creating a working infrared (IR) and radio frequency (RF) communication network across several PCBs.

GLOVE

First Prototype

An early PCB prototype for the glove, which allowed us to test the functionality of the circuit. This circuit should be able to fire an infrared laser, as well as activate the haptic motor. However, this design has a lot of wasted space between components since this design utilizes a one-sided PCB. The electronics were sized down to ensure the glove's maximum comfortability for the wearer.

Final Prototype

Final PCB

The final PCB prototype is double-sided and a fourth of the size of the early prototype, allowing us to create a more compact product.

Final Schematic

Above is a screenshot of our final schematic. Note the red and blue wires representing the top/bottom of the double-sided PCB and the larger holes for the vias.

Future Steps

The future step for glove circuitry is to switch to an ATTINY-based glove. This would create a more compact and comfortable glove circuit, as the ATTINY is drastically smaller than the Arduino Nano used in our current design.

Future Schematic

VEST

Our final vest PCB is similar to our glove PCB: it's double-sided and contains regions for a Nano, haptic motor, and LORA. In addition, we have a speaker and wires that link to LEDs that give the user feedback when shot.

LORA Test Circuit

Final Schematic

Soldered PCB

TAKEAWAYS

We started unfamiliar with the electrical engineering process behind IR and RF communication, but building the electrical system has taught us the skills we need to bring a concept to fruition: soldering, desoldering, PCB manufacturing, and circuit debugging.

Mechanical Subsystem

Software Subsystem

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