From circuit design to the user manual,
we build a hardware product all the way through.
RawlsOn is a development company where one team handles PCB and enclosure design, embedded software, and technical documentation. We turn a device that exists only as an idea into a product you can hold.
Start a projectFour jobs of product development, done together instead of apart.
When the person drawing the circuit, the person writing the firmware, the person designing the enclosure, and the person writing the manual are all different people, gaps open up between them. We treat the four as one flow.
PCB design
Circuit design, part selection, layout, prototype builds, and verification. We design with production in mind, using parts you can actually buy.
Enclosure design
3D enclosure design that accounts for the board and the assembly order, 3D-printed prototypes, and drawings prepared for injection molding, sheet metal, and other production methods.
Embedded software
MCU firmware, sensor and motor control, communication (USB, BLE, Wi-Fi, serial), and application software for Linux-based devices.
Technical documentation
User manuals, installation and maintenance guides, and developer documentation. The people who built the device write the documents, so the two never drift apart.
The kinds of devices we build.
From input devices handled by hand to cleaning equipment used in clinics, we work on products where mechanics, electronics, and software come together.
Input devices
Devices that try a new way of input, such as keyless keyboards. We design the mechanics, sensors, firmware, and host connection together.
- Key scanning and sensor input circuits
- USB HID and BLE connection firmware
- Enclosures and assemblies that fit the hand
Medical and hygiene equipment
Equipment that must repeat a fixed procedure exactly, such as endoscope cleaning machines. Control sequences, safety interlocks, and logging are built into the design.
- Valve, pump, temperature, and flow control
- Cleaning cycle sequencing and history logs
- Operator screens and maintenance manuals
Custom embedded devices
Measurement, control, and display devices that off-the-shelf products cannot cover. We join from the stage where the requirements are still being worked out.
- Sensor data collection and transmission
- Small displays and control panels
- Control modules that attach to existing equipment
Build small, confirm, then expand.
We do not promise a finished product on day one. Each stage produces something you can see and check, and we decide together whether to go on to the next.
-
Requirements
We agree in writing on what to build, how far to take it, and where it will be used.
-
Proof of concept
We first confirm the core function works, using development boards and off-the-shelf parts.
-
Design and prototype
We design the PCB and enclosure and build a small batch to verify operation and assembly.
-
Firmware and testing
We complete the firmware and confirm stability through repeated testing.
-
Documents and handover
We hand over design files, source code, and the user manual, and support production afterwards.
Have a device in mind? Send us an email.
A short description and your target timeline are enough. We will reply with what is feasible and how we would proceed.
Based in Seoul, South Korea. We work with clients anywhere through online meetings.