BUILDTHATCRAZY® // EXPERIMENTAL MAKER LAB

WHERE I BUILD WEIRD THINGS THAT ACTUALLY WORK.

Experimental products, machines, software and systems — built from scratch, broken, rebuilt, and documented for you.

Explore Artifacts →Read Manifesto

BUILD_021 // SENTINEL● 240MHz LIVE

WIFI GHOST v2.1ESP32-S3 CORE

RF RX: 12,492 PKT/S

BUFFER: DMA RING (0% DROP)

ANOMALY: PASSIVE OK

RF POWER: +19.5 dBm SMA

LAST FLASHED: 23 MINS AGO[ VIEW SCHEMATIC ↗ ]

00 / THE LAB MANIFESTO

I DON'T JUST BUILD PROJECTS.
WE BUILD THE THINGS WE WISH EXISTED.

Built. Tested. Broken. Documented.

[ 01 / BUILD ]

BUILT

I don't do vaporware or theoretical slide decks. Everything starts on a copper circuit board or bare metal C++ firmware.

27 COMPLETE RIGS

[ 02 / TEST ]

TESTED

Pushed to thermal, power, and RF limits. Oscilloscopes, logic analyzers, and load testing under real-world interference.

12k PACKETS/SEC

[ 03 / BREAK ]

BROKEN

I celebrate failures. Burnt traces, brownouts, and memory leaks are published as engineering post-mortems so you can learn.

11 LOGGED FAILURES

[ 04 / DOCUMENT ]

DOCUMENTED

Open-source KiCad schematics, bill of materials with real component costs, FreeRTOS code, and full step-by-step guides.

100% REPRODUCIBLE

01 / PHYSICAL ARTIFACTS

THE BUILDS.

View all 27 lab items →

PROJECT_001 // ESP32-S3● ACTIVE PRODUCTION

OLED 128x64 TELEMETRY12,000 PKT/S DMA BUFFER+19.5 dBm SMA

ESP32-S3AIWI-FISECURITYFREERTOS

AUTONOMOUS NETWORK SECURITY DEVICE

Dedicated air-gapped device that passively sniffs 2.4GHz Wi-Fi traffic, alerts on rogue deauth frames, and classifies anomaly patterns with on-device TinyML.

BUILD TIME

11 DAYS

HARDWARE BOM

₹950 TOTAL

FIRMWARE

ESP-IDF / FreeRTOS

VERSION

v2.1 PROD

C++ SOURCE ↗

PROJECT_002 // RPi 5 + NVMe● IN ACTIVE BUILD

TACTILE BRASS ENCODERQ4_K_M QUANTIZED LLM420ms FIRST TOKEN

RASPBERRY PI 5LLMSENSORSVOICEPYTHON

AI-POWERED PHYSICAL DESKTOP MACHINE

Edge-native physical companion with tactile knurled rotary knobs, mechanical hotkey switches, and local LLM reasoning running 100% offline.

BUILD TIME

23 DAYS

HARDWARE BOM

₹13,350 TOTAL

COMPUTE

Pi 5 + 512GB NVMe

VERSION

v0.8 EXPERIMENTAL

AUDIO PIPELINE ↗

02 / LAB ARCHIVE

THE LAB ARCHIVE

THE LAB // ACTIVE RIGS

27 BUILDS● 08 ACTIVE● 11 BROKEN● 04 SHIPPING● 04 ARCHIVED

001SENTINELAutonomous Network Security DeviceESP32-S3 / C++ / FREERTOS● LIVE

SENTINEL — Hardware Diagnostics & Pinout Logs

Promiscuous Wi-Fi frame sniffer with 12k packets/sec ring buffer and I2C OLED display.

VERSION: v1.4.2LAST EVENT: ESP32 ring buffer verifiedSTATUS: LIVE

002AI DESKPhysical Voice & Reasoning CompanionRPi 5 / LLM / SENSORS● BUILDING

003GHOST NODEStealth RF Mesh & Presence UnitM5STACK / RF / LORA● TESTING

018WIFI GHOST v3RF Sniffer & Defense Lab BoardESP32 / WIRESHARK● BROKEN

020DARKMESH NODEFully Offline Encrypted LoRa NetworkLORA32 / AES256● BUILDING

016PIXEL OSMinimal Linux Distro for IoT DevicesBUILDROOT / C / BASH● ARCHIVED

03 / BENCH TELEMETRY

HARDWARE WORKBENCH

Real oscilloscopes, solder stations, logic analyzers, and prototype arrays. All telemetry fed live from the bench.

BENCH_STATION // KANPUR LAB● ALL SYSTEMS NOMINAL

Keysight DSOX2004A Oscilloscope · Weller WX1010 Soldering Station · Logic Pro 16 Analyzer

PROJECT 023 // AI ROBOT78% COMPLETE

███████████████░░░░░ 78%

HARDWARE (MOTOR DRIVERS & LIDAR)██████████ 100%

FIRMWARE (FREERTOS & UART)███████░░░ 70%

ON-DEVICE AI (OBSTACLE AVOIDANCE)█████░░░░░ 50%

ESP32-S3 Array● ONLINE

Raspberry Pi 5● ONLINE

M5Stack Core2● TESTING

AI Server (NVMe)● ONLINE

04 / NOTHING IS HIDDEN

HOW IT WAS BUILT

Every single failure, schematic trace, memory leak, and FreeRTOS task is documented. Not marketing. Real engineering you can build from.

SYSTEM ARCHITECTURE FLOW

DEVICE [ESP32-S3 SENSORS]

│

├── PROMISCUOUS RF SNIFFER (12k frames/sec)

│

↓

EDGE PROCESSING [DMA RING BUFFER]

│

↓

AI SERVICE [TINYML ANOMALY DETECTOR]

│

↓

DASHBOARD [128x64 I2C OLED DISPLAY]

BUILD LOG / #014

09:42 PM: The ESP32 keeps restarting during high Wi-Fi beacon load.
10:13 PM: Found it. Power rail drops to 2.8V whenever Wi-Fi transmission bursts occur.
11:02 PM: Added 100uF tantalum decoupling capacitor on 3.3V rail. Restart problem solved.

✓ LOGGED & COMMITTED TO GITHUB

05 / POST-MORTEMS

THINGS THAT DIDN'T WORK.

Broken things are part of the build. Most portfolios hide failure. We make it our foundation.

ESP32 CAMERA V1 — FAILED

Reason: Insufficient power rail current on standard 3.3V LDO regulator causing sensor brownout.

Fix: Upgraded to 1A low-dropout buck converter with TVS protection.

AI ROBOT V2 — FAILED

Reason: Motor back-EMF inductive spikes corrupted I2C bus communications to obstacle sensors.

Fix: Added optocoupler isolation and fast flyback schottky diodes.

NETWORK NODE — FAILED

Reason: Bad dynamic packet malloc inside high-speed interrupt service routine.

Fix: Static FreeRTOS ring-buffer queue allocation with zero heap allocs.

WHAT IF
WE JUST
BUILT IT?

ROBOT

Some ideas start as a sketch.
Some start at 2:17 AM.
Some absolutely should not work.

We build them anyway.

“yes, really.”

06 / HARDWARE STORE

TAKE THE EXPERIMENT HOME.

Devices, DIY kits, and open-source bundles. All documented, all modifiable.

DEV BOARD // ESP32-S3

CRAZY NODE v1

Compact IoT development board with onboard OLED screen, Wi-Fi 6, BLE 5.0, and ENIG gold pads.

[ ASSEMBLED ][ DIY KIT ][ SOURCE ]

₹2,499

[ GET THE NODE → ]

TACTICAL COMMS // LORA 868MHz

MESH KIT v2

Complete 3-node long-range RF kit. 10km direct line-of-sight range with zero cellular or internet reliance.

[ ASSEMBLED ][ DIY KIT ][ SOURCE ]

₹6,999

[ GET THE MESH KIT → ]

RAW FABRICATION // ENIG GOLD

SENTINEL PCB

Bare production PCB with gold immersion pads, Gerber files, full BOM parts list, and firmware package.

[ BARE PCB ][ BOM INCLUDED ][ SOURCE ]

₹899

[ GET THE PCB → ]

07 / COLLABORATE

HAVE A CRAZY IDEA?

Tell me what you want to build. I'll tell you honestly if it's possible, what it costs, and how long it takes.