Skip to content

Matthew's Project Gallery

Nokia Bell Labs Backscatter radio, Spring 2025

Tag verification testbench: RF switch board, Arduino Mega, and five tag programmer boards — Tag verification testbench. Automation cut bring-up from 20 minutes to 2 across 300+ devices.

Nokia backscatter tag board with enclosure, batteries, and antenna — Backscatter tag with its enclosure, batteries, and antenna.

RF fixture with Mini-Circuits switch matrices, MXG signal generator, and MXA signal analyzer — RF fixture: two Mini-Circuits switch matrices route tags through a circulator to the MXA.

Testbed block diagram of a 16-way RF switch matrix for 15 tags — Testbed block diagram: 15 tags through a 16-way switch matrix built from Mini-Circuits SP4T and SPDT switches.

Large test floor with antenna tripods and a spectrum analyzer on a cart — Large-scale bistatic test floor.

Tag spectrum near 900 MHz on an MXA signal analyzer — Tag spectrum near 900 MHz, April 2025.

Purple tag breakout PCB with power, SPI flash, and test headers — Tag breakout board for power, SPI flash, and test signals.

Oscilloscope showing tag clock and data lines with serial decode — Tag baseband clock and data with serial decode, March 2025.

Testbench cart with signal generator, spectrum analyzer, multimeters, and power supply — Full testbench cart: signal generator, spectrum analyzer, DMMs, and supply.

RF transmitter build in an enclosure with fan, Xilinx-based SDR board, and router — Xilinx-based RF transmitter build for bistatic tests.

Generate Product Development 2024 to now

GCE Control PCB V1.0, assembled — GCE Control PCB V1.0 for the air filter assembly machine, Fall 2025.

Assembled Tubender Rev 1.0 main board — Tubender Rev 1.0 main board, assembled. Fall 2024.

GCE power board with 24V input and two regulators — GCE power board: 24V in, two regulated rails with power-good outputs.

Tubender UI board KiCad 3D render — Tubender UI board, KiCad render.

Tubender display prototype: RA8875 TFT driver on a breadboard — Tubender display prototype: RA8875 TFT driver on a breadboard.

PE Micro Cyclone programmer flashing an NXP board — Flashing an NXP board with a PE Micro Cyclone, Fall 2025.

Tubender display and UI schematic — Tubender display and UI schematic.

Tubender UI screen flow from menu to bend in progress — Tubender UI state machine, screen by screen.

Tubender main control board KiCad render — Tubender main board, KiCad render.

Classwork, Clubs, and Personal Builds

Side view of the open-source XR headset in use — Open-source XR headset, Networked XR Systems.

SAR ADC model spectrum, DNL, and INL plots — 8-bit SAR ADC golden model: 49.3 dB SNDR, 7.90 ENOB.

XR headset rev 1 hardware: Arduino Uno and battery pack on a goggle mount — XR headset rev 1 on an Arduino Uno. Rev 2 moved to a Raspberry Pi.

12V to 5V buck converter PCB 3D render — 12V to 5V buck converter, 2A max.

Testing the XR headset with the camera feed on a wall display — XR headset camera passthrough on the wall display.

Laser-cut wooden pinball machine with LCD score display and ultrasonic sensor — Laser-cut pinball machine with LCD scoreboard.

Pinball electronics prototype on a SparkFun RedBoard and breadboard next to calipers — Pinball electronics prototype on a SparkFun RedBoard.

FPGA-controlled spider robot — FPGA-controlled spider robot, Embedded Design.

Pneumatic drone gripper prototype with air pump, valves, and silicone gripper — Pneumatic drone gripper, NURobotics. I founded the team and did the motor control and PCB.

Labs and Internships

Green laser path through free-space optics on an optical table — Free-space optics alignment in the DELTA Lab.

DEKA Sentry security robot in Manchester Police livery — DEKA Sentry robot. I wrote its LTE modem firmware.

Makerspace electronics bench with soldering stations, oscilloscope, and parts bins — Makerspace electronics lab I ran as team lead.