Circuit board, firmware and app, developed by one team as one product.
What we do
Hardware product development usually needs all three. We cover each of them in-house, so the board, the code and the apps are designed to work together from day one.
Electronics design
Electronics design services, from schematic to PCB layout: boards designed to work on the first build, with components chosen for availability as much as for specs.
Embedded systems
Reliable, maintainable embedded software for microcontrollers, written by the same people who designed the board it runs on.
Apps and platforms
The part your customers actually see: web, desktop and mobile apps that set up, control and show what your device does, and the backends behind them.
Why one partner
Products rarely fail inside a single discipline. They fail at the seams: a pin that firmware can't use, a protocol the app didn't expect, a feature nobody owned. Building the whole stack removes those seams.
Pinouts, protocols and APIs are decided by the same team, so they fit the first time.
When something misbehaves there is no finger-pointing between separate hardware, firmware and software vendors.
A change in one layer is carried through the others straight away, not after a round of meetings.
Design files, source code and documentation delivered in a form your own team can maintain.
How we work
Five steps, with one team accountable from feasibility to the first production batch.
Requirements, constraints, budget and timeline. We check feasibility before anyone draws a schematic.
System architecture across all three layers, then schematics, PCB layout, firmware structure and the apps.
Boards are built and brought up, enclosures are 3D-printed, and firmware and software are tested together on real hardware.
Design files, firmware, apps and documentation, handed over in a form your own team can maintain.
Manufacturing files, production test tools and hands-on support while the first batches are built.
Selected work
A selection of recent projects, each taken from first idea to working device.
A 48 × 16 mm tracker using cellular, GNSS and Wi-Fi, with firmware and a web app for managing devices and their data. Six months, end to end.
View project
A 20 kW BLDC motor driver for an industrial electric vehicle maker, taken from schematic to production so the client owns the complete hardware behind its control algorithms.
View project
A compact STM32 controller with Single Pair Ethernet and 24 V valve control, replacing a central PLC with one node per facade element. Three months, hardware and firmware.
View project
A battery-powered 30 W speaker with two wireless microphone channels, built-in playback and effects, and sound controls right on the mic. Six months, hardware and firmware.
View project
A solar-charged weather station for an agricultural startup, giving agronomists data from fields and orchards and running for years on a single battery.
View project
The main board of a motorized camera robot for broadcast and live production, with motor, lens and camera control, power and networking on a single PCB.
View project
A programmable switcher that turns guitar effects on and off, reorders them and recalls whole setups from presets, with a fully analog signal path.
View project
A battery-powered LoRa counter that mounts on injection molds, records every cycle and sends the data from many machines to one central dashboard.
View project
A compact plug-in night light that switches itself on in the dark, designed for ultra-low cost and now manufactured at scale.
View project
A smart round counter and GPS tracker that fits inside a pistol grip, counting shots without contact and reporting to the client's server over cellular.
View projectAbout
AT Systems is an electronic product development company based in Serbia, working with clients around the world. We take products from idea to working device: the circuit board, the firmware inside it and the software people use with it.
We are engineers who design electronics, write embedded code and build apps ourselves, so the person who drew the schematic is the one bringing up the board. We work with companies that need one team to own the whole product, from consumer devices to industrial electronics and IoT systems.
FAQ
Answers to what people usually ask before getting in touch.
Electronic products that need custom hardware, firmware, software or all three: connected devices, industrial controllers, consumer electronics and IoT systems. We can build the whole product or one layer of it.
Yes. Many projects start as a sketch or a list of requirements. The first step is checking feasibility, budget and timeline before any design work begins.
It depends on complexity. Across more than 20 projects, the time from first meeting to working devices has ranged from three months to a year. You get a realistic timeline after the discovery step.
We prepare the manufacturing files and production test tools and support you while the first batches are built. We don't run mass production ourselves.
Yes. We design enclosures and 3D-print them for prototypes and early testing.
You do. Schematics, PCB files, firmware, app source code and documentation are handed over in a form your own team can maintain.
Contact
Tell us what you are building, even if it is only an idea. You will get questions, an honest assessment and a proposal for next steps.
We reply within one working day. Prefer email? info@at-systems.tech
