CHRISTOPHER
SPARROW
The engineer behind Dogtooth Systems
SELECTED / WORK
Custom Avionics
GPS / Radio PCB
A compact 4-layer flight computer integrating GPS telemetry, LoRa radio, and full flight data logging for AerospaceNU's high-power rocket program.
View Case Study →
Automatic Toothpaste
Dispenser
A 3-person capstone: SolidWorks mechanical design paired with Arduino-driven servo actuation. I owned the electronics and firmware side.
View Project →I'm Christopher Sparrow, an electrical engineer building hardware at the intersection of aerospace systems and embedded electronics. I design the boards, write the firmware, and chase signal integrity all the way down.
At AerospaceNU, Northeastern's high-power rocket team, I developed a custom avionics stack — four-layer PCB, GPS telemetry, LoRa radio uplink — that goes from schematic capture in KiCad straight to flight. The hardware has to work on the first drop.
Dogtooth Systems is my engineering signature — named after the deep-water dogtooth tuna. It's the mark I put on my PCB silkscreens, the aesthetic thread running through my work, and a reminder that high performance exists in environments most people never see.
Currently seeking roles in hardware engineering, avionics, and embedded systems where precision is the baseline expectation, not the exception.
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Board Design
- KiCad 7/8 — schematic & layout
- 4-layer stackup & impedance control
- DFM / DRC / ERC — pre-fab checks
- RF layout & antenna keepouts
- JLCPCB / OSHPark fabrication
- LCSC & Digi-Key BOM management
Firmware & Systems
- C / C++ bare-metal & RTOS
- STM32 (HAL & register-level)
- Arduino / AVR prototyping
- UART · SPI · I²C · CAN
- LoRa / GNSS peripheral integration
- Logic analyser & oscilloscope debug
Mechanical Design
- SolidWorks — parts & assemblies
- GD&T & tolerance stack-up analysis
- FDM 3D printing — rapid prototyping
- Sheet metal & enclosure design
- Drawings & ANSI/ISO standards
Let's
build
something.
Open to hardware engineering roles, avionics contracts, and collaboration. Fastest reply is email.