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rgandhi7/README.md

Electrical & Computer Engineering Portfolio

A collection of hardware design, digital logic, embedded systems, analog electronics, and high-voltage energy systems engineering projects developed using SystemVerilog, KiCad, SolidWorks, and Xilinx Vivado.

Featured Projects

1. 5-Stage Pipelined RV32I Processor Core

  • Description: A 32-bit RISC-V CPU core designed in SystemVerilog and synthesized on a Digilent Basys 3 FPGA (Artix-7).
  • Key Features: Full 5-stage execution pipeline (IF, ID, EX, MEM, WB), hardware Forwarding Unit for RAW execution path hazard bypass, Hazard Detection Unit for 1-cycle Load-Use stalls, and branch control logic. Tested via an assembly-level security vault lock state machine running from instruction ROM.
  • Tools & Tech: SystemVerilog, Xilinx Vivado, Basys 3 FPGA (Artix-7), RISC-V Assembly.

2. Hydrophone Signal Conditioning Circuit & 25 kHz Bandpass Filter

  • Description: Analog signal conditioning PCB designed for the Illini RoboSub autonomous underwater vehicle (AUV) hydrophone localization array.
  • Key Features: Microchip MCP6S21 SPI-controlled Programmable Gain Amplifier (PGA), multi-stage active 25 kHz bandpass filter network, and dual-rail (+-5V) decoupled power distribution to isolate acoustic navigation pings from thruster switching noise.
  • Tools & Tech: KiCad 9.0, Analog Circuit Design, Active Filters, BNC Shielding, Oscilloscopes.

3. 120V High-Voltage Battery Pack CAD Assembly

  • Description: 3D CAD structural packaging and cell module integration model designed in SolidWorks for a high-voltage (~120V) electric motorcycle powertrain.
  • Key Features: 3x6 modular module array, custom cell retaining plates, vertical structural standoffs, and mechanical bracket interconnects engineered for high volumetric density and physical cell restraint under vehicle vibration.
  • Tools & Tech: SolidWorks, EV Battery Packaging, Modular Mechanical Design, High-Voltage Systems.

Technical Skills Summary

  • Hardware Description & Verification: SystemVerilog, RISC-V ISA (RV32I), Microarchitecture, Pipeline Hazards, Forwarding & Stall Units.
  • PCB Design & Analog Electronics: KiCad 9.0, Schematic Capture, Active/Passive Filters, SPI Programmable Amplifiers, Decoupling Networks.
  • Mechanical & HV Systems: SolidWorks CAD, Modular Battery Module Packaging, Structural Cell Retention, High-Voltage Systems Architecture.
  • Lab Instrumentation & Tools: Xilinx Vivado, Benchtop Oscilloscopes, Digital Multimeters, Function Generators, Git Bash.

Pinned Loading

  1. RV32I-5Stage-Pipelined-CPU RV32I-5Stage-Pipelined-CPU Public

    5-stage pipelined RV32I RISC-V processor core implemented in SystemVerilog with hazard detection and data forwarding deployed on Basys 3 FPGA.

    SystemVerilog

  2. Ghost-Electric-Motorcycle-HV-Battery Ghost-Electric-Motorcycle-HV-Battery Public

    Modular high-voltage lithium-ion battery pack CAD assembly and packaging architecture for the Ghost Electric Motorcycle.

  3. 25kHz-Band-Pass-Filter 25kHz-Band-Pass-Filter Public

    Analog signal conditioning and active 25 kHz bandpass filter PCB with MCP6S21 PGA for underwater acoustic localization.