Hardware and embedded software development

Hardware product development,
from circuit design to production documentation.

RawlsOn is a hardware development company where a single team delivers PCB design, enclosure design, embedded software, and technical documentation.

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Services

Design, software, and documentation in one process.

Gaps between circuit, mechanical, firmware, and documentation work are a leading cause of schedule slips and quality issues. At RawlsOn one team owns all four, so design changes propagate through the entire process immediately.

01

PCB design

Circuit design, part selection, layout, prototype builds, and verification. Parts are selected with production supply in mind.

02

Enclosure design

3D enclosure design that accounts for the board and the assembly process, 3D-printed prototypes, and drawings prepared for injection molding, sheet metal, and other production methods.

03

Embedded software

MCU firmware, sensor and motor control, USB, BLE, Wi-Fi, and serial communication, and application software for Linux-based devices.

04

Technical documentation

User manuals, installation and maintenance guides, and developer documentation, written by the engineers who designed the product to prevent mismatches between product and documentation.

Applications

Devices that combine mechanics, electronics, and software.

Input devices

Devices with new input methods, such as keyless keyboards.

  • Key scanning and sensor input circuits
  • USB HID and BLE connection firmware
  • Ergonomic enclosures and assemblies

Medical and hygiene equipment

Equipment that must repeat a defined process precisely, such as endoscope cleaning machines.

  • Valve, pump, temperature, and flow control
  • Process sequencing and history logging
  • Operator screens and maintenance manuals

Custom embedded devices

Measurement, control, and display devices not covered by off-the-shelf products.

  • Sensor data acquisition and transmission
  • Small displays and control panels
  • Control modules that integrate with existing equipment
Projects

Selected projects

2026

Endoscope storage cabinet control system

Control board and operator software for an eight-channel endoscope storage cabinet. Per-channel valve, pump, heater, and fan control with temperature display. Raspberry Pi-based operator screen.

EndoCAB V1 control board
Control board EndoCAB V1
Eight-channel operator screen
Eight-channel operator screen
Endoscope storage cabinet
Storage cabinet
2021

Disaster alert display terminal

Raspberry Pi terminal that displays emergency messages received through the KBS emergency alert broadcast gateway. MagicMirror-based terminal application and integration API for the disaster set-top box. Client: AirCode Co., Ltd.

7-inch terminal prototype showing an earthquake alert test
7-inch terminal prototype
Emergency alert ticker on a TV screen
Alert ticker on TV
2019

Pose-estimation exercise coaching application, Replay:Me and SkeFit

Mobile application that estimates joint positions from video, compares them with a reference pose, and provides corrective instructions. In-house product.

Tennis serve pose comparison
Tennis serve pose comparison
Plank pose correction
Plank pose correction
SkeFit
SkeFit
Process

Verified at every stage.

Deliverables are reviewed at the end of each stage before the next begins.

  1. Requirements

    Scope, operating environment, and required performance are fixed in writing.

  2. Proof of concept

    Core functions are validated on development boards and off-the-shelf parts.

  3. Design and prototype

    The PCB and enclosure are designed and built in small quantities to verify operation and assembly.

  4. Firmware and testing

    Firmware is completed and stability is confirmed through repeated testing.

  5. Documentation and handover

    Design files, source code, and user manuals are delivered, with production support afterwards.

Contact

Project inquiries

Send a brief description of the device and your target schedule. We will reply with the feasible scope and a proposed approach.

hello@rawls-on.com

Based in Seoul, South Korea. Projects are conducted online for clients in Korea and abroad.