Our First Product, FiaPhy

Last Updated: 6th December 2025/ Build 1.1.2

FiaPhy / News


Our FiaPhy Visual Studio Extension was downloaded by more than 45 users on Marketplace
https://marketplace.visualstudio.com/items
Our FiaPhy GitHub repository was starred by more than 55 users and used by more than 330 users on GitHub.
https://github.com/fiaos-org/fiaphy
We are now in official Arduino libraries list.https://docs.arduino.cc/libraries/fiaphy

On PlatformIO, our Fiaphy framework was downloaded 5+ times (overall) obtaining an upper-middle rank.
registry.platformio.org/libraries/fiaos-org/FiaPhy/compatibility

Patent Pending in The United States of America
System and Method for Indirect Estimation of Solar Irradiance and Heat Flux via Differential Thermodynamic Sensing
US 63/937,986 % Sent December 26, 2025



How Novel, Physics based Frameworks are Shaping the Future of Sensing [video]



Share the invention FiaPhy and how it can make a difference in the world. We invite you to download the presentations and present them, or use them for your own presentation.

Download the presentation (PPTX) to share at your school or club Download the PDF to share online
Modern methods of environmental monitoring are deficient in the lack of ability to take measurements of energy flows since traditional readings involve capturing parameters such as temperature, pressure, and humidity without considering their physical causes. The present research describes Differential Temporal Derivative Soft-Sensing (DTDSS), a physics-based approach which enables any ordinary low cost sensor array to infer estimates of the energy exchange in the environment by modeling its radiative heat fluxes. In particular, the proposed approach combines a novel paired sensor configuration along with a unique algorithmic solution called Inertial Noise Reduction or INR, that mathematically models the flow of energy in the environment by computing Global Horizontal Irradiance, or GHI, and convective heat flux. Experimental field testing has been conducted with the use of calibrated reference pyranometers supplied by the Department of Meteorology of Sri Lanka, yielding a correspondence between 8-bit embedded processor results and the reference of R2 ¿ 0.9 and RMSE approx. eqv. to 45 Watts per square meter in under 2KB RAM of a microcontroller unit.

FiaPhy Library

Presented at Intellihacks special opportunity offered by Dr Jehan Seneviratne - the University of Colombo School of Computing

Process of Making - FiaPhy

This image gallery consists of a very small number of stages of this process. I was so fascinated by this invention that I had to record it! Enjoy!
Barely Working Wi-Fi Station (Lagging) barely working wifi station (lagging)
Designing the Stevenson Sensor (Rain, Radiation Shield) designing the stevenson Sensor (rain and radiation shield)
FIA FiaPhy First Successful Test (2nd Floor, Home-Mounted and Kept Online with Internet for Over 18 Hours) — Another Another Picture FIA FiaPhy 1st successful test (2nd floor home and kept online with internet for over 18 Hours with only a Lion battery. Demonstrates the power efficiency. Cloud synced data is available at cloud.fiaos.org/data)
FIA FiaPhy First Successful Test (2nd Floor, Home-Mounted and Kept Online with Internet for Over 18 Hours) — Another Picture FIA FiaPhy 1st successful test (2nd floor home and kept online with internet for over 18 Hours with only a Lion battery. Demonstrates the power efficiency. Cloud synced data is available at cloud.fiaos.org/data)
FIA FiaPhy First Successful Test (2nd Floor, Home-Mounted and Kept Online with Internet for Over 18 Hours) FIA FiaPhy 1st successful test (2nd floor home and kept online with internet for over 18 Hours with only a Lion battery. Demonstrates the power efficiency. Cloud synced data is available at cloud.fiaos.org/data)
Failed Version 1 failed version1
Fitting the Heat Sink Fitting the heat sink and the novel, self sustaining power plant based on lid
In the Final Stages Before the First Successful Deployment in the final stages before the first successful deployment
Installing the Sensors Inside the Custom Flux Sensor installing the sensors inside the custom FiaPhy flux sensor
Oh, Custom-Made Flux Sensor! Oh, custom made flux sensor!
Thermoelectric Generator Fitting Stage thermoelectric generator Fitting Stage
Tweaking Things tweaking things
Ventilation System Creation for the FiaPhy Custom Flux Sensor ventilation system creation for the FiaPhy custom flux sensor
Waterproof, IPV4 3D-Printed Enclosure Arrived via Mail waterproof, IPV4 3D printed enclosure
Stevenson Sensor Is Ready After Printing stevenson sensor is ready after printing
IP65 Waterproof IP65 Waterproof!

Publications