Smart-building IoT platform
Small ESP32-C3 sensor nodes publish through AWS IoT into a room-by-room web view of a real two-floor home. The same path carries configuration back down, including to one Bluetooth-bridged radiator.
Kevin O’Flannagain · Electronic engineer
Hardware, and the software that makes it useful.
I work on smart-building systems at Hereworks. This site keeps the notes from my own projects: an air-quality sensor network for a real house, autonomous robots, optical research, LED builds, and a kitchen garden that gets weighed.
The live 3D view needs WebGL. The enclosure studies page shows the same model as drawing sheets.
Live model · air-sensor enclosure · drag to orbit Open the studies
Now
Hereworks · smart-building systems
Devices, controls, networks, and software that have to work together inside a building.
Building
Air-quality nodes for a two-floor home
ESP32-C3 sensors, AWS IoT, a React room view, and one radiator on the control loop.
Next
Printing the first display enclosure
Three housings modelled at true size. Five caliper checks stand between the studies and a print.
Selected projects
One current project with several moving parts, and earlier work I still come back to.
Earlier engineering
Robots, optics, and a display I soldered by hand
Work from Analytical Robotics and UCD, plus the personal build that taught me the most about timing and wiring.
Autonomous robot prototypes
Two generations of a mobile robot: localisation, perception, planning, electronics, and the mechanical build.
Optical systems research
Beam steering, beam shaping, and optical switching, from Zemax models to the optical bench.
10×10 LED matrix + Pong
One hundred hand-soldered LEDs, multiplexed into a display that plays Pong with two physical controls.
Off the bench
Smaller builds and things that grow
A weekend LED cube, a Python game, and two growing records that are really about keeping notes.
Electronics · 2020
3×3×3 LED cube
A small hand-soldered cube made to learn multiplexing and animation.
Python · 2021
Scrolling space game
A Space Invaders-style game with movement, projectiles, enemies, and scrolling scenery.
Garden · 2026
Kitchen garden record
Dated photographs, planting notes, and weighed harvests from the 2026 kitchen garden.
Growing · experiments
Indoor growing trials
Microgreens, herbs, and propagation under lights, with photographs as the notebook.
About
Code and physical things, together
Electronic engineer, UCD graduate, happiest when a change in software shows up on a bench.
Current work · Hereworks
Smart buildings and IoT
I work at Hereworks on smart-building systems: the devices, controls, networks, and software that need to work together inside a building.
I studied Electronic Engineering at UCD, then worked on optical research with Huawei and on autonomous robot prototypes at Analytical Robotics. The projects here are the ones I kept photographs and notes for, so each page reads as a record of what was actually built rather than a finished-product claim.
Now
Hereworks
Smart-building systems and IoTAlongside it, the home IoT platform is where I try ideas end to end.
2020
Analytical Robotics
Autonomous robot prototypesAutonomy software, electronics, and hardware iteration across two robot generations.
2018–2019
UCD + Huawei Technologies
Optical systems researchBeam steering, beam shaping, and switching, from simulation to the optical bench.