Varnitronics

Box Build

From tested board to finished product.

Turnkey system assembly: your PCBAs integrated with enclosures, cabling, and firmware — functionally tested, serialised, and packed so the next person to open the box is your customer.

The last mile of manufacturing

A working PCBA is not a product. Between the tested board and the unit your customer unboxes sits a chain of unglamorous, precision work: enclosures, harnesses, gaskets, torque values, firmware versions, labels, and the final test that proves the whole thing behaves as one device.

Box build puts that chain inside the same four walls that made your boards. One partner, one quality system, one accountable schedule — instead of a relay race between a board house, a cable shop, and whoever screws it all together.

How a box build runs

01

Integration planning

We turn your build documents into a station-by-station work instruction — BOM levels, torque specs, routing diagrams, test points.

02

Sub-assembly

PCBAs, harnesses, and mechanical sub-assemblies are built and tested individually before they meet the enclosure.

03

System assembly

Boards, wiring, displays, and mechanics come together in a controlled sequence with in-process checks.

04

Firmware & configuration

Units are flashed, configured, and serialised — every device leaves with a known identity and software state.

05

Final test & pack-out

Functional testing to your pass criteria, then labelling and packaging ready for your warehouse or your customer's desk.

Box build service
ScopePCBA + enclosure + harness + firmware + final test + pack-out
EnclosuresPlastic, sheet metal, extruded — customer-supplied or sourced
CablingHarness assembly, crimping, routing, dressing
FirmwareProgramming & configuration during assembly
TestingFunctional test to your procedure; burn-in on request
Pack-outSerialisation, labelling, retail or bulk packaging

Frequently asked questions

What exactly does box build include?

Everything after the bare PCBA: mounting boards into enclosures, wiring harness assembly and routing, displays and connectors, firmware programming, final functional testing, serialisation, labelling, and packaging. You define where it stops — some customers take tested sub-assemblies, others take retail-boxed product.

Can you source enclosures and mechanical parts too?

Yes. Enclosures, fasteners, cables, and mechanical parts can be customer-supplied or sourced by us through the same vetted-channel process we use for electronic components.

How do you test assembled units?

Against your functional test procedure — power-on tests, I/O checks, communication tests, calibration steps. If you don't have a formal procedure yet, we help define one during integration planning. Burn-in is available where reliability requirements call for it.

What documents do you need to quote a box build?

A full BOM (electronic and mechanical), assembly drawings or an exploded view, wiring diagrams for any harnesses, firmware and programming instructions, and your test criteria. A sample unit — even a prototype — makes quoting faster and more accurate.

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