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Services / 03 / Hardware & IoT prototypes

From sketch to a working prototype you can put in someone's hands.

Fusion 360 models, 3D-printed parts, ESP32 electronics and firmware, and the app that talks to the device. One person across all of it, so nothing gets lost between teams.

Tell me about your project

Free 30-minute intro call. Written scope and quote before any work starts.

Sound familiar?

If any of this is you, keep reading.

01

You have a hardware idea and nothing but a sketch.

02

The product needs a device, an app and a backend, and every shop you call does only one of them.

03

You need something physical for investors, a pilot or an event, in weeks rather than quarters.

04

An earlier prototype works on the bench and nobody remembers why.

What you get

The deliverables.

  • Parts and enclosures modelled in Fusion 360 and 3D-printed, revised until they fit
  • Electronics on ESP32 and similar boards, with the firmware
  • The app, dashboard or API the device talks to
  • A build log with every measurement and fix, so the next engineer can pick it up

Proof

Things I've already shipped.

Lead prototype developer at NapNok Games. Taught 3D modelling and printing at SmartUp Social Innovation Lab.

Electric Cherry

Hardware / E-Bike Build · 2026

Belt-drive e-bike conversion: a 6374 motor on a one-piece 3D-printed holder modelled in Fusion 360 and scripted over MCP, an HTD 5M belt at 7.67:1, and a Flipsky VESC on a 6S5P pack. Every fix, from idler creep to belt rub, gets measured and logged. The wireless link became its own open-source project: a €1–2 ESP-01 WiFi bridge for VESC Tool.

View

BROOD

Art / Computational Neuroscience · 2026

A gallery of e-ink frames, each running a ~9k-neuron slice of a real fruit fly connectome in portable C sized for an ESP32-S3. The fly paints, visitors vote more or less, and the votes become dopamine, so each fly's taste drifts with its audience. Preference learning works; the flies don't make art on their own yet.

IN DEVELOPMENT

Morning Brief (Kindle)

E-Reader Tools / LLM · 2026

KOReader plugin for a jailbroken Kindle. One tap pulls full-text AI and tech news plus Macedonian outlets into a single morning document, alongside a reading list, Reddit feeds, tasks synced both ways with Google Drive, and an LLM assistant.

PERSONAL TOOL

How it works

From first call to handover.

  1. STEP_01

    Intro call

    30 minutes. You explain the problem, I tell you honestly whether I'm the right person for it.

  2. STEP_02

    Written scope

    What gets built, what doesn't, how long it takes and what it costs. In writing, before any work starts.

  3. STEP_03

    Build in the open

    You see working progress every week instead of a big reveal at the end.

  4. STEP_04

    Handover

    Source, files, documentation and a walkthrough. You own all of it.

Ask for an intro call

After it ships: A prototype answers a question, then raises the next one. Once yours has been tested I can build the next revision, or document it for whoever builds the production version.

QUESTIONS

Do you handle production manufacturing?

No. I build working prototypes. For production you get files and documentation a manufacturer can work from.

Do I need to be in Skopje?

No. Prototypes ship and we work over video. Being nearby helps for hands-on testing, but it isn't required.

What does a prototype cost?

It depends on how many parts and how many revisions. You get a written scope with a price before any work starts.

Start a project

Tell me what you're building.

A few lines is enough. I reply within two working days, and if I'm not the right person for it, I'll say so.

Based in: Skopje, MK · CET · remote

Availability: Taking new projects

Or email me directly

hello@lll.mk
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