CHARLES M
EMBEDDED SYSTEMS · IOT HARDWARE · FIRMWARE

Charles M

Firmware Architect & R&D Leader

From assembly-level registers to production dairy-instrumentation terminals — twenty years of embedded systems built to sense, measure, and ship at scale.

Based in Bengaluru & Madurai, India
Experience 20+ years
01 — ABOUT
Background

Firmware architect and R&D leader with over 20 years of hardware R&D experience, spanning weighing instrumentation to founding and leading IoT dairy-tech product development today. Works firmware-first across the full stack — from assembly-level register work to C/C++ in Visual Studio and PlatformIO, across STM32 and ESP32 platforms. Also brings operational and P&L leadership from co-founding and scaling a last-mile logistics company, and multi-time entrepreneurship spanning renewable energy and electric-vehicle R&D.

02 — EXPERIENCE
Timeline
JAN 2026 — PRESENT
VP R&D, IoT Hardware
Stealth Startup · Bengaluru
  • Leading firmware for the Magic Box, an RFID and MQTT-based connected device.
  • [Add a second highlight — e.g. team size, milestone, or launch metric]
JUL 2025 — JAN 2026
Co-Founder
Things Of Pure
  • [Add 1–2 highlights about this venture]
APR 2020 — JUN 2025
Associate VP → Head, Business Operations & R&D
Entoo (formerly Lightning Logistics)
  • Co-founded and scaled a last-mile logistics company through significant revenue growth.
  • Led the electric two-wheeler R&D program — battery modelling, motor modelling, EV lifecycle management.
AUG 2016 — AUG 2019
Founder & Head Technology
SOLAR Technologies · Madurai
  • [Add 1–2 highlights about this renewable-energy venture]
OCT 2012 — JUL 2016
Founder
Hindustan Electric Systems Pvt Ltd · Madurai
  • [Add 1–2 highlights about this venture]
NOV 2011 — OCT 2012
Application Solution Architect
DSP Microtechnics Pvt. Ltd.
  • [Add 1–2 highlights from this role]
SEP 2008 — NOV 2011
Senior Engineer, R&D
TVS Electronics
  • [Add 1–2 highlights from this role]
MAR 2005 — AUG 2008
R&D Engineer
Essae Teraoka Limited
  • [Add 1–2 highlights from this role — weighing instrumentation background]
JUN 2000 — MAR 2005
Junior Engineer, R&D
DSP Microtechnics
  • [Add 1–2 highlights from this role]
WORKED WITH
Essae Teraoka TVS Electronics DSP Microtechnics Entoo SOLAR Technologies
03 — SKILLS
Toolkit

FIRMWARE & LANGUAGES

Embedded C/C++ Assembly Arduino STM32CubeIDE PlatformIO Visual Studio

MICROCONTROLLERS & PLATFORMS

STM32 (F0 series) ESP32 / ESP32-S3 FreeRTOS

CONNECTIVITY

BLE WiFi MQTT RFID RS-232

SECURITY

Secure Boot Flash Encryption Signed OTA NVS Encryption

HARDWARE & SIGNAL PROCESSING

PCB Bring-up Analog Front-End Design Ultrasonic Time-of-Flight Sensing

PRODUCT & DOMAIN

IoT Product Architecture Weighing Instrumentation Dairy Analytics EV Battery/Motor Modelling
04 — PROJECTS
Highlights
Current
Magic Box

An RFID and MQTT-based connected device built as VP R&D at a stealth IoT hardware startup.

In development
[Add project link]
Deployed
SUJAN Smart Box

ESP32-S3 milk collection terminal with RS-232 scale/analyser parsing, BLE remote display, thermal printer, WiFi AP, and encrypted HTTPS OTA updates behind a tiered-password settings UI.

Live · Generating revenue
[Add project link]
In field validation
VeriLac

Integrated IoT milk analyser and weighing terminal for village-level dairy collection centers, built on STM32F030C8 with a proprietary two-temperature ultrasonic sensing method for real-time fat/SNF measurement.

TRL 5 → TRL 6
[Add project link]
05 — TESTIMONIALS
What people say

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06 — CONTACT
Get in touch

Opens your email app, addressed to Charles, with this filled in.

EMAIL
charles.m3110@gmail.com
LINKEDIN
linkedin.com/in/charlesm-997b7723
GITHUB
[Add your GitHub link]
LOCATION
Bengaluru, Karnataka, India