What we deliver
Twara Technologies designs and engineers connected devices, from the first feasibility prototype to firmware that is ready for production. We bring together hardware selection, embedded software, connectivity and the update and provisioning machinery that keeps a fleet maintainable once it is in customers’ hands. The result is a device that behaves predictably in the field, can be fixed remotely, and comes with the documentation a manufacturer, a certification lab and your own engineers will need.
This work connects naturally to the cloud side of a product. When you also need a back end, see IoT Platforms & Dashboards; for a dedicated security review, see IoT Security.
Typical scope
- Discovery of the use case, operating environment, power source, enclosure constraints and installation process.
- Selection of microcontroller or system-on-module, sensors, radio and power architecture.
- Proof-of-concept builds on development kits to test the riskiest assumption first, such as battery life, sensing accuracy or radio coverage.
- Firmware architecture: bare-metal or real-time operating system, task structure, configuration storage and error recovery.
- Device drivers, low-power modes, watchdogs and brown-out handling.
- Connectivity stack and messaging to the cloud or a local gateway.
- Bootloader, signed over-the-air updates and rollback.
- Provisioning of unique device identities and credentials during manufacture.
- Bench, environmental and field testing, with records you can keep.
Technologies we work with
We choose tools to suit the product rather than the other way round.
- Microcontrollers and modules: widely used families such as Espressif ESP32, STMicroelectronics STM32 and Nordic Semiconductor nRF parts, and Linux-capable modules or single-board computers where a gateway needs more processing.
- Operating systems: bare-metal code for very simple, low-power devices; FreeRTOS or Zephyr when the device juggles several concurrent tasks; embedded Linux (for example Yocto-based builds) for gateways with richer networking or storage needs.
- Connectivity: Wi-Fi, Bluetooth Low Energy, cellular, and LoRaWAN, which the LoRa Alliance describes as a low-power, wide-area networking specification that targets bi-directional communication and end-to-end security.
- Messaging: MQTT, which mqtt.org describes as a lightweight publish/subscribe transport for constrained devices; MQTT Version 5.0 is an OASIS Standard. HTTP or CoAP where they fit better.
- Smart home interoperability: Matter, the IP-based protocol from the Connectivity Standards Alliance, runs over Wi-Fi and Thread and uses Bluetooth Low Energy for commissioning. It is worth considering if your device must work across ecosystems.
How we choose: power source and battery budget first, then data volume and latency, then the security features of the silicon (secure storage, hardware cryptography, secure boot), then component availability and the maturity of the vendor’s toolchain.
How we approach it
- Frame the product. Agree what the device must sense or control, the conditions it will face and how success will be judged.
- Prototype the hardest part. Prove the riskiest assumption on real hardware before committing to a board design.
- Design the architecture. Document firmware structure, data flows, power states, update path and identity provisioning.
- Build in increments. Deliver working firmware builds in short cycles, each with automated unit tests and bench test results.
- Field trial. Install a small batch in real locations to catch radio, installer and environmental issues that a bench will not show.
- Prepare for production. Factory test firmware, provisioning procedure and release process, ready to hand to a manufacturer.
Security, privacy and quality
We use the European standard ETSI EN 303 645 V3.1.3 as a design checklist. Its provisions include no universal default passwords, a way to manage vulnerability reports, keeping software updated, storing sensitive security parameters securely and communicating securely. In India, the Telecommunication Engineering Centre’s Code of Practice for Securing Consumer IoT, Release 2.0 (TEC 31318:2025) has been revised to reflect that ETSI version, and notes that IoT devices must undergo testing and certification under the Department of Telecommunications’ MTCTE regime before sale, import or use in India.
If a device collects information about people, the Digital Personal Data Protection Act, 2023 and its Rules, notified on 14 November 2025, shape what is collected, how long it is kept and how it is protected. We design for data minimisation and deletion from the start.
Quality practices include code review on every change, static analysis, unit tests run on each build, hardware-in-the-loop checks for critical paths, and versioned release notes for every firmware image.
Engagement options
- Feasibility prototype: a focused piece of work to test a concept and its riskiest assumptions on real hardware.
- Full product development: Twara Technologies engineers firmware and connectivity end to end, working with your hardware designer and manufacturer.
- Firmware takeover and remediation: review, stabilise and continue an existing codebase.
- Ongoing firmware maintenance: security fixes, feature updates and staged releases for devices already in the field.
Contact us to discuss the device you are planning.