Joseph Williams Email & Phone Number

Palo Alto, California, United States

San Luis Obispo, California, United States

Designing and maintaining C++ firmware for seven ARM-based microcontrollers on an electric formula car.Redesigning vehicle CAN architecture to reduce bus utilization and include features for greater serviceability such as CAN database files and UDS.Enabled error bit logging on Motec Advanced Central Logger from vehicle CAN Bus to allow more efficient vehicle troubleshooting in the field.Developed new torque map from voltage received from two hall-effect sensors on the throttle pedal to resolvedrivability issues and improve low-speed vehicle control.Reworked pedal-box circuit board to simplify error controlled relays in Altium.Constructed E-Car back and front wire harnesses.

Pasadena, California, United States

Developed a simplified portable test bench for a compute element with a linux laptop, and power supplies to communicate with and power a RAD750 flight computer.Wrote a python script for logging analog voltages and PRT temperatures across test bench computers.Debugged communications errors between test equipment and compute element FPGAs based on given specifications and oscilloscope readings.Reviewed board IO resistances and voltages to ensure expected behavior prior to being integrated with other parts.Created procedures for setting up test equipment hardware and software.Designed a wire harness to connect five power supplies to a backplane.

Hillsboro, Oregon, United States

Enabled SPI communication from FPGA chip to ICs based on device datasheets.Investigated and resolved transceiver setup and hold time errors in communication between FPGA chips.Improved user functionality and reworked existing Python scripts for workflow automation.Wrote a Python script to automate the creation of Verilog modules used as a memory format in the FPGA device.Designed a customizable input delay module in System Verilog used to synchronize device outputs.Debugged FPGA designs on hardware with Signal Tap.Simulated and validated FPGA modules in Modelsim with self-checking test cases.

Adams, Oregon, United States

Designed a wireless temperature probe circuit board based on a provided set of specifications to be installed in the ground for soil temperature monitoring. Carried out board design on Autodesk Eagle software and breadboard prototyping. Researched hardware configurations and prepared purchase requests for parts and boards. Soldered and tested many iterations of circuit boards. Researched and prepared a report on possible robotic weed removal methods.

Pendleton, Oregon, United States

Designed and 3D printed a robotic arm using servos, and an Arduino Mega.Programmed Unity game engine in C to send rotational data of an HTC Vive virtual reality headset over serial connection to an Arduino and set servo rotations based on incoming rotational data.Displayed real time footage from two cameras mounted on the robotic arm to a HTC Vive headset in the Unity.Ported the Arduino and robotic arm to a Raspberry Pi with a server that transferred the rotational data and images between the Raspberry Pi a computer running Unity.