Wearable + body-worn devices
Wristbands, badges, body-worn sensors. PPG, accelerometer, GPS, BLE, NFC. Used by SecureMe Devices for the worker-safety wearable.
01 · Hardware + firmware
From raw concept
to manufacturable hardware.
Most studios stop at the prototype. We engineer through to the manufacturing handoff — industrial design, mechanical, electronics, embedded firmware, certifications, and the design-for-manufacturing pass that turns a working desk-sample into a unit that yields at scale. Twelve years of shipped IoT devices behind every assumption.
Methodology
How product development actually moves at SFHL.
- 01
Concept clarity + technical feasibility
Two-week scope. We pressure-test the product hypothesis against real BoM costs, sensor availability, regulatory friction, and manufacturing realities. Output: a one-page feasibility memo with go / pivot / kill recommendation.
- 02
Industrial design + mechanical
Form-factor, ergonomics, IP-rating strategy, mechanical tolerancing. Done in tight loops with the firmware and electronics teams so the enclosure doesn't compromise the radio or the sensor placement.
- 03
Electronics + embedded firmware
Schematic capture, PCB layout, BoM optimisation, firmware bring-up. We work in C / C++ / Rust on bare-metal or RTOS as the constraint demands. Every commit gets reviewed against power, latency, and OTA-stability budgets.
- 04
Companion app + cloud telemetry
iOS, Android, and a web supervisor surface as needed. Cloud telemetry is wired through the Process Automation pillar's playbook — so the same observability discipline applies whether your fleet is 10 units or 100,000.
- 05
Certifications + manufacturing handoff
BIS / MTCTE for India, FCC / CE for export markets, RoHS for component-level. We package the design files, test reports, and DFM annotations for handoff to your manufacturing partner — and stay through the first production run for issue resolution.
In scope
What we ship inside this pillar.
Smart connected products
Consumer + industrial smart appliances. Edge-cloud architecture, OTA firmware, mobile companion app. Recent: smart connected product line for an Indian wellness FMCG group.
Asset + personnel tracking devices
Standalone GPS trackers, BLE asset tags, indoor positioning beacons. Heritage from MyBuddyGPS, deployed in active commercial use.
Industrial sensors + edge gateways
Custom sensor platforms for manufacturing and infrastructure deployments. Cellular failover, edge inference, local data caching — built on Raspberry Pi, custom MCU boards, or industrial gateway hardware as the deployment demands.
Stack
The technical surface for this pillar.
- Industrial design (SolidWorks · Fusion 360)
- PCB design (Altium · KiCad)
- Embedded C / C++ · Rust
- Sensor fusion (PPG · IMU · GNSS · BLE)
- iOS / Android (Swift · Kotlin · Flutter)
- Edge inference (ONNX · TensorFlow Lite)
- OTA pipelines (custom · AWS IoT · Mender)
- Certification labs (BIS · MTCTE · FCC · CE)
Typical engagement
What working with us on this pillar looks like.
- Engagement shape
- Fixed-scope phase blocks (Feasibility → ID → DV → DVT → PV) or fixed-fee retainer for ongoing iteration after first ship.
- Typical duration
- Typical hardware program: 6–18 months from feasibility to manufacturing handoff. Lighter-weight pilots: 3–6 months.
- Team commitment
- 1 product lead + 2–3 engineers (mechanical, electronics, firmware, app). Scaled up in the dense bring-up phases, throttled down between.
- IP & deliverables
- Client owns the design files, firmware source, mechanical IP. SFHL retains rights to reusable platform components (sensor-fusion stack, OTA framework, telemetry SDKs) which compound across customers.
Got a product development problem we should look at?
First conversation is 30 minutes, founder-led, no funnel routing.