Engineer by heart
Biomedical electronics at SETU Carlow. Circuits, signals and firmware, built one project at a time.
I'm a Biomedical Electronics student who likes the whole stack of a device: the sensor, the analog front end, the firmware, and the enclosure it all lives in. Third year into the degree, with first-class results and a growing shelf of hands-on builds: EMG signal acquisition, boards taken from simulation to surface-mount, pulse oximetry, embedded AVR work. This site is a living deconstruction of my CV, and it grows as the work does.
A four-stage acquisition chain: instrumentation amplifier, 5 to 450 Hz band-pass filter, non-inverting output stage, then Arduino ADC sampling. The design work was in holding a clean signal against common-mode noise and baseline drift, and it ends with live muscle activity on an on-board LCD.
One project taken through the entire PCB lifecycle. Simulated in Proteus, prototyped on stripboard and breadboard with debug iterations, then routed, manufactured and hand-assembled as both a through-hole and a surface-mount board.
Optical sensing of pulse rate and blood oxygen, from breadboard and firmware experiments through to a CAD enclosure that turns a circuit into something you can hold. Readings land live on an OLED display.
A full signal path designed as one system rather than a set of exercises: regulated supply, pre-amp, volume and squelch control, comparator, and output stage. Simulated in Proteus, laid out as a PCB, and built on stripboard.
Temperature and humidity sensing on a bare ATmega328P in embedded C, with a status LED set, an LCD log display, and a buzzer for extreme readings. Register-level work built on the AVR assembly fundamentals from the same module.
Two scrapers published and sold on the Apify marketplace, billed per event and profitable in their first month across 139 users. The commercial edge is access rather than parsing: sessions are authenticated on our side, so the actors read age-restricted accounts a logged-out scraper cannot, with no login or cookies required from the customer.
A Python service running unattended on a Linux VPS under Docker and cron, currently watching five accounts. Two-tier scraping with automatic fallback, metrics in Postgres, and a monthly PowerPoint report generated end to end.