Industrial weighing
In-motion weighing controller
- Our scope
- Hardware, firmware and software
- Outcome
- Field-deployed in weighbridges and in-line checkweighers, with event-wise readout in the cloud.
Engineering service
Firmware and Embedded Software
Stable firmware for ARM, PIC, AVR and other microcontrollers, and embedded software on Android, Linux and Windows — built to keep running through power dips, noise and unreliable communication.
Is this service a fit?
Typical clients
- New devices that need firmware from first bring-up
- Products adding connectivity, scheduling or app control
- Devices that reset, freeze or report unstable readings in the field
Problems it solves
- Timing edge cases and memory pressure
- Watchdog misconfiguration and silent lock-ups
- Communication timeouts and noisy inputs
- No safe recovery after a power dip or fault
Scope
What’s included
- Embedded firmware that runs on the device, from the bootloader to the application logic
- Companion applications for phones and PCs that configure, monitor and control the device
- Cloud and web software: dashboards and the services behind them
- Software solution design before development starts: scope, architecture, UI flows and integrations
- Which layers are in scope is written into each proposal
What we need from you
- Hardware details or schematics (or our hardware design)
- Required behaviour and operating modes
- Communication interfaces and protocols
- Fault conditions and the safe state the device should return to
- App, gateway or cloud requirements
- Existing source code and known issues, if any
What you receive
- Firmware architecture
- Firmware builds for agreed milestones
- Communication protocol definitions
- Test results, including fault and power-dip behaviour
- Release notes
The exact list, file formats and ownership are confirmed in your project proposal.
At a glance
Software, layer by layer
Embedded firmware, companion applications, industrial PC software and cloud software are separate pieces of work, each with its own deliverables.
| Layer | What we build | Platforms and tools |
|---|---|---|
| Embedded firmware (on the device) | Bootloaders, device drivers, middleware and communication stacks; control, scheduling, PID loops and fault handling; emWin GUIs where the product has a display | C and C++ on ARM Cortex-M3, M4 and M7 (including NXP LPC1788), ESP32, PIC and AVR · RTOS: Keil RTX or FreeRTOS · ESP-IDF framework on ESP32 · embedded Linux |
| Companion applications (phone and PC) | Android apps that configure, monitor and control the device over Bluetooth, Wi-Fi or cellular; Windows tools such as configuration utilities, firmware flashers, calibration assistants and data loggers | Kotlin, Java, Flutter · .NET, Python |
| Industrial and PLC software (PC) | SCADA bridges, PLC test harnesses, Modbus polling tools, protocol simulators and HMI panels | .NET operator software on the inspection-system project |
| Cloud and web software | Web dashboards and back-end services for device telemetry, alerts, history and commands | React, Python Flask, MQTT, REST APIs · Azure storage and dashboards on the weighing-controller project |
Process
Milestones and acceptance checkpoints
Behaviour specification
Modes, interfaces, timing and fault handling written down.
CheckpointSpecification sign-off
Architecture
Tasks, drivers, communication stack and memory plan.
CheckpointArchitecture review
Feature builds
Functions delivered incrementally on real hardware.
CheckpointMilestone demonstrations
Validation
Long-run, fault, noise and power-dip testing.
CheckpointTest results against specification
Release
Production firmware with release notes.
CheckpointRelease approval
Evidence
Case studies and notes
From our own products
Driptel’s firmware delivers GSM control, automatic and manual modes, and MTR, Cycle, RTC and Sequential irrigation settings. Gardentel’s firmware provides Wi-Fi control from an Android app with automatic notifications.
Industrial inspection
Inspection system controller and operator software
- Our scope
- PLC hardware, control firmware, operator software
- Outcome
- Deployed in India: one team for the PLC hardware, control logic and operator software.
From our engineering notes
What a six-layer weighing board had to include
Four boards, a six-layer LPC1788 controller, RTOS firmware and cloud readout for weighbridges and in-line checkweighers.
What to send with a first engineering enquiry
The short list Sai Agro Tel asks for before a first reply: what the device must do, where it will be used, the stage, and the quantity.
Other engineering services
FAQs
Frequently asked questions
Can’t find your answer? Ask the team directly.
Which microcontrollers and tools do you work with?
ARM Cortex-M3, M4 and M7 (including NXP LPC1788), Espressif ESP32, Microchip PIC, AVR and other microcontrollers, chosen for the product’s performance, power and cost needs. Tools include Keil µVision, MPLAB X, Espressif IDE and GCC-based toolchains.
Do you work with RTOS and embedded Linux?
Yes. We use Keil RTX and FreeRTOS, the ESP-IDF framework on ESP32, and embedded Linux, along with drivers and communication protocols.
Can you build the mobile app as well?
Yes. We build Android companion apps that control, monitor and configure field hardware over Bluetooth, Wi-Fi or cellular, as well as Windows tools and web dashboards.
What makes firmware “production-ready”?
It runs for long hours, handles power dips and noisy inputs, reports what went wrong instead of freezing, and returns to a safe state after a fault.
Start a conversation
Discuss your firmware requirement
Share what you are building. The more context you give, the more useful our first reply can be.