Concept to Production
Turning a concept into a device a factory can actually build. Specification, architecture, PCB design, prototype bring-up, firmware, validation and manufacturing handoff — delivered end to end from our Thiruvananthapuram laboratory.
Direct Answer
Electronic product development is the engineering process that converts a product concept into a manufacturable electronic device. Hexcode Plus R&D, an MSME-certified hardware engineering laboratory in Thiruvananthapuram, Kerala, delivers this end to end in seven phases — specification, architecture, PCB design, prototype bring-up, firmware, integration and production handoff — under one roof, with the client retaining full ownership of all design files and source code.
A working prototype is a milestone, not a product. The distance between a breadboard that demonstrates a function and a board that a factory can build ten thousand times — at a predictable yield, from components that are actually purchasable — is where the majority of hardware ventures lose their schedule and their capital. The failure is rarely conceptual. It is the accumulation of unresolved engineering detail: a part with a 40-week lead time, an unshielded switching regulator that fails EMC, a trace geometry that was never checked against the fabricator's real process, a firmware architecture with no path to field updates.
Hexcode Plus R&D was established in 2019 in Thiruvananthapuram specifically to close that gap. The laboratory is hardware-native rather than software-adjacent — a distinction that matters in India, where the overwhelming majority of technology firms operate at the application layer and subcontract anything below it. We design at the PCB trace and firmware register level, with practising engineers executing client projects in-house rather than routing them to intermediaries.
This page describes how a concept becomes a manufacturable product. For the underlying capability detail, see our embedded systems, PCB design, firmware development and IoT infrastructure service pages. For sector-specific engagements, see industries served.
Development Process
Each phase produces a defined, reviewable deliverable. Durations are indicative for a moderately complex connected device and compress or extend with scope, certification requirements and board complexity.
Convert the concept into an engineering specification. Power budget, connectivity selection (LoRaWAN, NB-IoT, BLE, Wi-Fi, cellular), sensing and actuation requirements, environmental and enclosure constraints, target bill-of-materials cost, and the regulatory path. Output: a written specification and a technical risk register.
Choose the microcontroller family, radio, sensors and power topology against the specification — not against habit. This is where the STM32-versus-ESP32 class of decision is made, and where component availability in the Indian supply chain is checked before it becomes a production blocker.
Schematic design and multi-layer board layout in KiCAD or Altium Designer. Controlled impedance (50 Ω single-ended, 90–100 Ω differential), reference plane integrity, differential pair length matching, EMI/EMC-aware placement, power integrity and thermal management. Designed to IPC-2221/2222 Class 2 as a minimum.
Fabrication liaison, prototype assembly, and systematic bring-up: power rails, clocks, programming interface, then each peripheral in turn. Bring-up is where design assumptions meet physics, and it is deliberately budgeted as its own phase rather than absorbed into firmware.
Embedded C/C++ against MISRA-C:2012 guidelines. Bare-metal or FreeRTOS architecture, hardware abstraction layer, device drivers, communication stacks, and where the product requires it, a secure bootloader with cryptographic verification and an over-the-air update pipeline.
Device-to-cloud integration over MQTT 5.0 or CoAP with TLS 1.3 and X.509 client certificates, against AWS IoT Core, Azure IoT Hub or a private Mosquitto/EMQX broker. Validation includes hardware-in-the-loop testing, static analysis (Cppcheck, Clang-Tidy) and unit tests under Unity or CppUTest.
DFM and DFA review, test point strategy, BOM consolidation with approved alternates, pick-and-place data, and a complete manufacturing data package. EMI/EMC pre-compliance guidance and certification support where the product requires it.
The following figures are drawn from hardware Hexcode Plus has deployed in the field. Each is stated with its limiting conditions, because an engineering result without its operating envelope is marketing, not data.
| Deployment | Measured result | Platform | Limiting conditions |
|---|---|---|---|
| Agricultural LoRaWAN sensor network | 3+ years battery life on 2×AA alkaline | STM32L0 + SX1276 + BME280 | 1 transmission/hour, SF7–SF10 adaptive, 25 °C mean ambient |
| Industrial IoT retrofit, Kerala plant | 37% reduction in unplanned downtime | ESP32 + ADXL345 + MAX6675 + ACS712 | 40 machines, 12-month measurement vs pre-retrofit baseline |
| Industrial energy optimisation | ~25% reduction in energy consumption | ESP32 nodes + MQTT broker + edge analytics | Varies with plant's pre-existing maintenance baseline |
| 6-layer high-speed DAQ board | First-pass success, zero respins | 6-layer FR4, 200 MHz, 50 Ω controlled impedance | IPC-2221/2222 Class 2, standard Indian fabrication house |
| Medical device secure OTA pipeline | Zero field failures, 5,000+ units, 18 months | STM32F407, dual-bank flash, AES-256-GCM + RSA-2048 | Class B diagnostic device, update image <512 KB |
| LoRaWAN rural coverage | 8–12 km per gateway, line of sight | SX1276, 865–867 MHz, 14 dBm TX | Rural Kerala terrain; urban range typically 2–5 km |
Engagement Fit
First-time and repeat founders taking a device from concept to a fundable, demonstrable prototype and onward to pilot production. Startup engagements →
Plants retrofitting legacy CNC, injection-moulding and packaging machinery for machine monitoring and predictive maintenance. Industrial IoT →
Regulated device makers needing disciplined firmware, secure bootloaders and auditable over-the-air update pipelines. Medical engineering →
Long-range, battery-operated sensor networks for irrigation, soil, microclimate and cold-chain monitoring. Agritech IoT →
Hardware-native, not software-adjacent. The laboratory designs at the PCB trace and firmware register level. In an Indian technology landscape dominated by software services, dedicated hardware R&D capability is genuinely scarce.
MSME-certified by the Government of India. Udyam Registration formally recognises Hexcode Plus as a legitimate engineering enterprise — relevant to procurement teams that require a verifiable counterparty rather than an informal service provider.
Practising engineers, not intermediaries. Client work is executed in-house. The engineers who publish our technical guides are the same engineers who lay out the boards.
Located in India's aerospace capital. Thiruvananthapuram hosts ISRO's Vikram Sarabhai Space Centre, the Liquid Propulsion Systems Centre and the Indian Institute of Space Science and Technology — an ecosystem with a high-reliability engineering culture and a deep local talent pool.
Full spectrum under one roof. Schematic, layout, prototype assembly, firmware, testing and manufacturing handoff across five engineering domains in a single laboratory, removing the coordination overhead of stitching together separate PCB, firmware and cloud vendors.
Open standards by policy. KiCAD as primary EDA tool; MQTT, CoAP and LoRaWAN as protocols. No black boxes, no hidden dependencies, no surprise licensing exposure for the client.
Product Development
For a typical connected device of moderate complexity, budget 6 to 12 months from signed concept to manufacturing handoff. A realistic split is 3–5 weeks for requirements and architecture, 4–8 weeks for schematic and PCB layout, 3–6 weeks for prototype fabrication and bring-up, 8–16 weeks for firmware and integration, and 4–10 weeks for validation, certification support and design-for-manufacture release. The single largest schedule risk is not engineering effort — it is board respins. Each respin adds roughly 3 to 6 weeks. This is why Hexcode Plus invests in design rule checking, DFM review and signal-integrity simulation before release to fabrication; our 6-layer 200 MHz data-acquisition board reached first-pass success with zero respins.
A prototype proves the concept works. A production-ready design proves the concept can be built a thousand times, by someone else, at a predictable cost. The gap between them is real engineering work: replacing unobtainable or single-sourced components, adding test points and a test strategy, meeting IPC-2221/2222 Class 2 fabrication tolerances, generating a complete manufacturing data package (Gerber RS-274X, NC drill, BOM with approved alternates, assembly drawings, pick-and-place file), and passing EMI/EMC pre-compliance. Most hardware projects that stall do so at exactly this transition.
Yes. Under our standard project-based engagement, the client owns the schematics, PCB layout files, firmware source code and the full manufacturing data package on final payment. Hexcode Plus works primarily in KiCAD, an open-source EDA tool, and on open protocol standards such as MQTT, CoAP and LoRaWAN, specifically so that clients are not locked into a proprietary toolchain or a single vendor. You can take the files to any fabricator or any engineering team.
Yes — this is a common starting point. The first phase is a requirements and feasibility engagement that converts an idea into an engineering specification: power budget, connectivity choice, sensing requirements, enclosure constraints, target unit cost and regulatory path. As one first-time hardware founder described the engagement, Hexcode Plus “took my concept sketch and delivered a manufacturable PCB with firmware — schematic, layout, prototype assembly, and firmware — all under one roof.” Producing that specification early is the cheapest risk reduction available in hardware.
Hexcode Plus is a design and R&D laboratory, not a contract manufacturer. We take the product through schematic, PCB layout, prototype assembly, firmware, and testing, then hand off a complete, fabrication-ready data package and liaise with PCB fabrication and assembly houses on the client's behalf for prototype and pilot runs. This separation keeps the client's manufacturing options open and avoids the conflict of interest that arises when the designer is also the factory.
Cost is driven by three variables: board complexity (layer count and interface speed), firmware scope (bare-metal driver work versus a full RTOS application with secure OTA), and certification requirements. Indicative bands for the Indian market run from roughly ₹1.5–4 lakh for a focused 2–4 layer design with basic firmware, to ₹12–35 lakh or more for a certified, multi-layer, production-intent connected product. A published breakdown by engagement type is available on the pricing and engagement page.
Send us the idea — a sketch, a specification, a competitor teardown, or a problem statement. We will tell you what it takes to build it: the architecture options, the realistic timeline, the cost drivers and the technical risks worth worrying about.
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