Preethesh Carvalho.
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The full build log

More things I've shipped.

From autonomous AI systems to campus hardware — every project explained, measured and linked.

01

Accord

AI-Negotiated Blockchain Escrow Platform

An autonomous escrow platform where three competing AI agents negotiate deals through a weighted optimizer, while an ARC-4 smart contract handles fund locking and release on Algorand — no human intermediary required.

  • Three competing agents negotiate deals via a weighted optimizer with autonomous on-chain settlement.
  • Self-hosted LLM inference stack (vLLM + ROCm) with a 3-tier fallback chain for reliability.
  • ARC-4 smart contract handles trustless fund locking and release on Algorand.
ReactNode.jsPythonAlgorandARC-4Algorand SDKFastAPIDockervLLMROCm

6 in ~4s

Negotiation turns

7× faster

vs. 30s target

3

Competing agents

02

EternoMind

Self-Optimizing Memory-Aware AI Runtime

A full-stack AI runtime that cuts LLM inference cost by compressing user-specific conversational context into persistent memory banks, then dynamically routing requests to cheaper models once memory coverage is sufficient.

  • Compresses conversational context into persistent Hindsight memory banks to reduce cost.
  • 11-node LangGraph pipeline: memory retrieval, RAG, prompt optimization, routing, validation, writeback.
  • FastAPI SSE streaming backend with a React dashboard for token, latency and savings metrics.
PythonFastAPILangGraphHindsightRAGReactGroqSSE

up to 60%

Inference cost cut

11

Orchestration nodes

SSE realtime

Streaming

03

FeedForward

Food Waste Reduction Platform

A food-waste tracking platform using YOLOv8 with a classical CV fallback to analyze plate waste in real time, paired with a penalty ledger that routes the majority of collected funds to NGO partners.

  • YOLOv8 + CV fallback (Hough circles + contour analysis) analyzes plate waste in under 200ms.
  • Penalty ledger charges restaurants and routes 95% of collected funds to NGO partners.
  • Zero double-counting enforced across a 7-state order lifecycle.
ReactNode.jsExpressPythonFastAPIYOLOv8OpenCVHough Transform

<200ms

Scan latency

95%

Funds to NGOs

7 states

Order lifecycle

04

CollegeBell

IoT Automated Bell Management System

An end-to-end IoT bell automation system pairing an ESP01S and relay module with a Flutter Windows desktop app, replacing manual bell operation with schedule-driven, remotely controlled ringing.

  • Flutter desktop app packaged for Windows with MSIX for simple campus deployment.
  • Firebase Realtime Database dispatches bell commands to the ESP01S over Wi-Fi with sub-second latency.
  • ESP01S + relay hardware handles the physical bell trigger reliably from scheduled or remote commands.
FlutterDartFirebase Realtime DatabaseESP01SC++RelayMSIXWi-Fi

Remote + scheduled

Control mode

Realtime Firebase

Command path

ESP01S + relay

Hardware

05

Drishti

Privacy-First Missing Person Reunion System

A de-identified, cross-lingual registry designed to reunite lost pilgrims at the Nashik Kumbh Mela 2027 without surveilling anyone. The system matches weak signals across languages and reveals identity only after a human-confirmed reunion.

  • Tier-1 offline rules handle most matches, while Tier-2 Claude resolves ambiguous cross-lingual descriptions.
  • Privacy is structural: hash at ingest, match blind, reveal on confirmation, audit the reunion, then purge raw PII.
  • Voice-first intake, drift prediction, booth mesh fallback and a live Streamlit operator dashboard support field teams.
PythonpandasSQLiteClaude APIStreamlitFoliumShapelyWhisperrapidfuzz

202 recovered

Ground-truth duplicates

100% offline

Core matching

11 nodes

Pipeline

06

Novato

Linux Terminal Companion That Teaches You

A natural-language package manager and error watcher for Linux. Novato translates what users want into distro-aware commands, explains failures in plain English, and keeps working with an offline fallback when the internet is unavailable.

  • Intent-to-command search detects the distro, ranks packages and shows the exact command before execution.
  • A silent shell watcher speaks only when a command fails and offers a practical fix.
  • Basic rules, local llamafile and online Groq backends form an automatic four-mode fallback chain.
PythonGroqllamafiledifflibShell hookspacmanaptdnfzypperpytest

15+

Distro support

4 fallback tiers

AI modes

Zero

Core dependencies

07

Orbit

Autonomous Founder Operating System

A multi-agent operating system that takes a business from idea to live, tested and marketed product. Local document grounding keeps private source material close, while specialized Gemini agents coordinate research, legal, brand, build, sales and support.

  • Gemma 4 local vault ingests documents, performs OCR and grounds agents in real business numbers.
  • Seven specialized agents work in parallel with conflict resolution before changes ship.
  • Plain-language Antigravity edits continuously update the live product while team context stays permissioned.
Gemma 4Gemini APIAntigravityManaged AgentsOCRNext.jsReactExpress.js

7

Specialist agents

7+ languages

Languages supported by Gemma

ITRs + GST

Grounding

08

AthleteID

The Digital Sports Ecosystem Platform

A three-sided sports marketplace connecting athletes, organizations and brands in one hub. Athletes build discoverable profiles, organizations host trials and recruit talent, and brands reach verified sports audiences through media-rich experiences.

  • Athlete signup to event acceptance is streamlined into a three-step application workflow.
  • Cloudinary-powered highlight videos and stats create responsive, media-rich athlete profiles.
  • Supabase subscriptions power real-time updates across trials, applications and marketplace activity.
Next.jsTypeScriptTailwind CSSSupabaseRealtimeCloudinaryVercel

3

Platform sides

1 sprint

Launch pace

Realtime

Updates