J Co., Ltd. logo J Co., Ltd.

Embedded & IoT development outsourcing · ITE SoC supply

Embedded development,
from circuit to software.

Firmware, circuits and PCBs, device communication, companion PC/mobile/web software and IoT servers. We take on a single function or the whole system, based in Korea and working with clients remotely.

New development · Improving existing products · System integration

Founded
May 2021 · Anyang, Korea
Completed projects
100+
Published case studies
60+ (Korean)
Deliverables
Agreed source code and design files

Services

Start with what you need.

A complete product or one specific function. We define the scope first, then build.

Firmware & hardware

We design circuits and PCBs for your product and develop firmware that drives sensors, actuators and peripherals.

STM32 / ESP32 / nRF52 · FreeRTOS · Bootloaders and firmware updates · Circuit and PCB design

Device connectivity

We connect equipment that speaks different protocols and implement monitoring and control, including upgrades to existing installations.

RS485 / Modbus · CAN · BLE · Wi-Fi · LoRa · MQTT gateways

Companion software

We build the software that configures and monitors your devices, developed together with the firmware so the protocol stays consistent.

Windows (C# / WPF) · Android / iOS · Web dashboards

IoT servers & maintenance

We collect and store device data, build monitoring servers and APIs, and support changes and maintenance after delivery.

MQTT / API · Databases · Embedded Linux · Maintenance

ITE SoC supply

ITE SoC chips, with development support.

We supply ITE SoC chips and develop firmware and applications on them, such as HMI panels, room controllers and display devices.

ITE chip catalog (Korean)
  • IT986x seriesIT9862 · IT9867 · IT9869
  • IT97x seriesIT972 · IT976 · IT978
  • IT983x seriesIT9833

Pricing depends on quantity and specifications. Email us the part number, quantity and use case for a quote.

How we work

Scope and schedule first.

  1. Requirement review

    We review the functions you need, existing equipment and test conditions, then agree on scope, quote and schedule.

  2. Design, development and testing

    We design the circuits and software, integrate with your equipment and run functional tests.

  3. Delivery and support

    We hand over the agreed source code and design files. Maintenance is arranged separately by scope and terms.

FAQ

Frequently asked questions.

Do you work with overseas clients?
Yes. We work remotely and communicate in English by email. Specifications, test results and progress reports can be shared in writing, and sample hardware can be shipped for testing.
Can we sign an NDA before sharing specifications?
Yes. We can sign a non-disclosure agreement before you share drawings, source code or product details.
Who owns the source code and design files?
The scope of source code and design files to be handed over, and the ownership or license terms, are set in the contract before development starts.
How is the price decided?
Pricing depends on scope. After reviewing your requirements, existing hardware and test conditions, we send a quote and schedule. A written description of the current situation is enough to start.
How are payments structured?
Payments are split into milestones agreed in the contract, for example an advance payment and payments at delivery stages.
Do you provide maintenance after delivery?
Yes. Bug fixes, feature additions and operational support after delivery are available. The support scope and cost are agreed separately.

Contact

Tell us what you want to build.

Send us your existing hardware, required functions and target schedule. A finished specification is not required. English emails are welcome; the online inquiry form is in Korean.