JJ Labs

Experimental research and engineering prototypes by JJ Coders Group.
Founded by Johan Jomet. Base: Kerala, India.

Projects | How We Build | Contact | JJ Coders Corporate

JJ Labs is our sandbox for testing systems that go beyond normal websites. We focus on local-first computing, physical sensor hardware, and practical software tools that run without cloud dependencies.

Active Projects

1. Ultrasonic Face Recognition System

Category: Hardware Experiments
Status: Prototype v1.5
Stack: Arduino Mega 2560, HC-SR04 ultrasonic sensor, Python 3, OpenCV, Serial communication

A hardware-triggered camera system. Instead of running continuous video processing that burns power, an ultrasonic sensor measures human proximity in real-time. Once someone enters within 200 cm, a serial trigger wakes the Python OpenCV pipeline to perform local face detection. All processing happens on the connected computer without cloud API calls.

Links: Project Details | Inquire on WhatsApp

2. GlycoStride Hybrid Glucose Walk System

Category: HealthTech
Status: Live Web App
Stack: Geolocation API, DeviceMotionEvent API, Haversine Drift Filter, Chart.js, PWA

A hybrid step-tracking web application built for post-meal glucose walk monitoring. Combines GPS data with device accelerometer movement to give accurate step counts and distance estimates. Filters out GPS jitter under 2 meters using the Haversine formula and runs fully in-browser with zero tracking servers.

Link: Open GlycoStride Web App

3. AI Calculator App

Category: Software
Status: Live Android APK
Stack: Android OS, Custom Math Logic Engine, Offline APK

A lightweight Android calculator application with structured expression parsing. Evaluates mathematical expressions, handles parentheses and operator precedence locally, and runs 100% offline without telemetry or network access.

Links: Download APK Installer | View GitHub Repository

4. Jent — Platform for Builders

Category: Software Platform
Status: Live Web
Stack: Firebase Firestore, Firebase Auth, Vanilla JavaScript SPA

A distraction-free social platform for programmers, founders, and creators to post raw project updates, build logs, and technical notes without algorithmic noise.

Link: Open Jent Platform

How We Build

Local-first: Whenever feasible, software runs on the device or in the browser. Zero unnecessary cloud servers, zero monthly bills, and respect for user privacy.
Real hardware: We work directly with microcontrollers, ultrasonic sensors, and cameras to connect physical interactions to software.
No vaporware: We only list projects that actually exist and can be tested right now.

Contact & Collaboration

If you are a student, engineer, or founder and want to test a prototype, collaborate on an experiment, or build hardware-software systems together:

WhatsApp: +91 95629 67075
Email: johanjomet@gmail.com
LinkedIn: Johan Jomet on LinkedIn
Base: Kerala, India