Motor control shouldn't need a PLC degree.

Jara Technology builds DC motor controllers with the safety discipline of industrial drives and the usability of modern software.

Why Jara exists

Started on a workbench, like yours

Jara began in 2021 when our founders tried to put a proper controller into a home-built go-kart. The choice at the time: hobby boards that browned out under load, or industrial drives that needed a ladder-logic course and a 200-page manual to set a current limit.

We thought the gap was absurd. Configuration belongs in a browser, not a proprietary Windows utility. Fault behavior should be visible and explainable, not buried in a status register. And a 100-amp H-bridge should survive the mistakes real builders actually make.

Five hardware revisions later, the DRV1100BDV5 drives go-karts, ride-on mowers, conveyor lines, and a few machines we'd never have guessed. Everything we learn ships back as firmware — and gets written up in the engineering journal.

Jara at a glance

Founded2021

Hardware revisions5

Controllers in the field38 400+

Firmware releases31

Countries shipped42

Team19 people

Counted from provisioning records, last updated with FW 0.2.0.

Principles

Three rules we don't bend

Safety is the spec, not a feature

The four-layer fault chain — hardware comparators first, firmware last — is designed before anything else on a new board. No firmware update can disable a hardware trip.

No black boxes

Every limit is inspectable, every fault explains itself in plain language, and the safety-supervisor sources are published for review. If you can't see why it tripped, that's our bug.

The cloud is optional

Configuration, diagnostics, and the web UI are served from the controller. No account, no internet, no subscription required for any safety or control function — ever.

Milestones

Five revisions of stubbornness

The short version — the long version, including the failures, is in the journal.

2021

The go-kart problem

First prototype: a hand-soldered H-bridge and a config page served over Wi-Fi. REV 1 releases its magic smoke on day 9.

2022

First production run

DRV1100 REV 2 ships to 200 early builders. Browser-based setup proves out — nobody asks for a Windows utility.

2024

The fault chain matures

REV 4 adds independent hardware comparators for overcurrent and overtemperature. Field failure rate drops below 0.3%.

2025

REV 5, 100 A continuous

The current DRV1100BDV5: 12–85 V, regen braking, CAN, and OTA updates from the browser flasher.

Where we build

Design, firmware, and final test under one roof

Boards are assembled by our manufacturing partner, then every single controller comes through our Tallinn workshop for load testing at full current before it ships. The same engineers who answer support tickets run the test bench — which is exactly why they answer support tickets.

Tallinn, Estonia — HQ, firmware & testEST · UTC+2

Brno, Czechia — board assemblyCZE · UTC+1

Workshop test-bench photo

Final test, station 3100 A · 30 MIN SOAK

Questions about us, the hardware, or volume orders?

Support tickets and sales inquiries land with the same engineers who build the product.