Do you trust a factory you've never met? Go meet them.
Shenzhen tour · Dec 6–11
Hardware engineering for startups at any stage: no engineers yet, one generalist, or a gap like FPGA. We design it in San Francisco and build it in our own factory in Shenzhen.
A free engineering review comes before you pay.
Our track record
500+ projects delivered.
200+ hardware teams served in 30 countries.
12 services you can configure and order online today.
You can start at any step. Each step ends with a file set or a unit you can test.
The engineers who draw your schematic stay on the project when it moves to the Shenzhen factory.
Our engineers design the electronics, the mechanical parts and the firmware. You get schematics, PCB layout, enclosure CAD and firmware that boots on your board. A DFM review checks each design against how the factory will build it. You receive the source files at each stage gate. Design files and IP are assigned to you at hand-off.
See engineering services
A demo build is your first working unit, the one you show investors or film for Kickstarter. In the portal you upload files and order the parts for it: PCBs, assemblies, stencils, machined, printed or sheet-metal parts. Each configuration shows its price before you submit.
Open the portal
We already hold the files, the bill of materials and the test plan, so nothing moves to a new supplier. Our engineers run EVT, DVT and PVT in the Shenzhen factory. After PVT you sign the golden sample: the reference unit that production is held to. Volume runs against that signed unit. The official quote states each lead time.
See productionWe work with startups and product teams in the U.S. Some have no hardware engineers. Some have one generalist and need a specialist, for example FPGA, RF or power electronics. Others have a team and a deadline. Software and app teams adding a device are welcome. We design, prototype and take the product to production.
Smart rings · Smartwatches and wristbands · Smart glasses · Data gloves for robot training
Needs: Tiny batteries, BLE, body sensors, sealed shells and low-power firmware.
Robot hands and grippers · Robots and teleoperation rigs · Exoskeletons and rehab devices
Needs: Motor control, encoders, touch sensors, embedded Linux and synced data.
Industrial IoT sensors · Smart home devices · Personal AI devices
Needs: Wi-Fi, LoRa or LTE-M radios, long battery life, sealed housings.
Battery packs and BMS · Chargers and power electronics
Needs: Cell balancing, protection, efficient converters, heat control and safety tests.
Lab and test instruments
Needs: Precise analog, FPGA or fast ADCs, calibration and motion control.
12 services run in the portal, and your files stay private. How you get a price depends on the service. Each configuration is saved to your account, so the files, the revisions and the price stay tied together. The portal also takes 72-hour prototype builds.
The free engineering review takes 2 business days for the four design services and 1 business day for the rest. Injection molding, die casting and other production work is priced by an engineer, not online.
Engineered in San Francisco. Prototype builds, DFM and mass production in our own factory in Shenzhen. The engineers who built your demo build take the same files through EVT, DVT and PVT. That is why the step from pilot units to volume does not start over with a new supplier.
The factory runs nine processes in-house: SMT on 8 automated lines, bare PCB fabrication, injection molding, CNC machining, sheet metal, die casting, metal stamping, box build and test. An in-house tool room, an ISO 7 clean room and an ISO 8 molding clean room support the work. Components come from a network of 350 audited suppliers.
Every production batch is compared with the golden sample you signed after PVT. Boards go through automated optical inspection, and functional and in-circuit tests run on fixtures built for your product. When a result drifts from the reference unit, an engineer reviews the drift before the next batch runs.
The Shenzhen factory holds these certificates. They cover regulated work: medical and rehab devices under ISO 13485, automotive and EV parts under IATF 16949, and aerospace and drone parts under AS9100.
These three follow the path above, from the first review to units in the hands of users.
A robotics startup needed working demo boards for a public launch week. During the DFM review our engineers found a decoupling capacitor in a high-strain zone that cut the sensor rail under vibration. We fixed it and built a small emergency run of perception boards in time for the demo.
A connected-health team moved from a small pilot to volume with flex PCBA and biocompatible encapsulation.
A logistics startup took a LoRa sensor from first samples to field units in an overmolded enclosure. On real job sites, the pilot units showed a housing resin that chalked in sunlight and a connector that worked loose under vibration. Both were fixed before volume tooling.
Client names are changed for confidentiality.
Joining founders in Shenzhen this December? See the Shenzhen founder tour
Send a sketch, a schematic or a full file set. Here is what happens next.
Prefer a call first? Talk to an engineer about scope, stages and what to build first.