Jonas Wienberg
Philipp Maginot
Franz Anhäupl
3 months
2024/25
Research, Ideation, Wireframes, UI/UX, Prototyping
Desk Research,
Creating a physical prototype, Rendering
Why Nass?
Water is life — but billions of people around the world have no access to clean drinking water. In Uganda, the situation is particularly critical: 51% of the population lacks safe access to water. Nass wants to change that.
Desk Research
Our research for NASS began with a deep dive into unfamiliar fields such as sensor technology and microfluidics. We explored topics like ISFET sensors, capacitive conductivity measurement, and electrochemical biosensors, all of which required extensive background research. Understanding the chemical and physical processes behind parameters like nitrite, nitrate, E. coli, and chlorine proved to be a key challenge. Without access to real-world testing conditions, we relied on simulations and theoretical assumptions. Balancing technical requirements such as miniaturization, energy efficiency, and user-friendliness added another layer of complexity. This research phase informed and guided the following design process.Iconography
To ensure clarity and usability, we developed a minimalist visual style with a strong focus on intuitive iconography. We used the Untitled UI library as a foundation and created custom icons to fit the specific needs of our device and interface.Given the international context, we carefully considered cultural differences in symbol interpretation, ensuring that icons were universally recognizable — even for users with low literacy levels. The icons were designed to be easily readable on both the website and the small E-Ink display, maintaining high contrast and simplicity for maximum accessibility.
UI Design
The E-Ink display of the water testing device provides clear and intuitive user guidance by combining large icons with easy-to-read text to ensure optimal readability. The screen size corresponds to that of a real display, which we found to be ideal.The screen shows various content, including individual test steps, measurement results, and the navigation menu.
Additionally, all content is available in both English and Swahili. The design is minimalist and functional, allowing users to navigate the testing process with ease.
Physical prototype
Our water testing device was designed for ease of use, efficiency, and durability. The ergonomic shape ensures comfortable handling, with a dedicated slot for replaceable test tubes. A simple two-button interface allows for easy navigation, while the E-Ink display provides high contrast and low power consumption, ensuring readability in all conditions. The UI guides users step by step, minimizing errors. The final prototype was modeled in Fusion 360, 3D-printed, and assembled with key functional elements, creating a practical and accessible solution for real-world use.Nass web platform
To support the device, we designed a clean and structured website that provides essential information and enhances usability. The platform offers a visual representation of collected water data, allowing users to analyze results through an interactive dashboard. Each device has a unique ID, enabling users to log in and track personalized test results over time.Beyond data visualization, the website explains the technology behind Nass, shares insights into the project, and invites NGOs and individuals to get involved. The design focuses on clarity, readability, and accessibility, ensuring a seamless experience for all users.
The manual
The Nass handbook was designed to provide users with a clear and accessible guide to operating the device. Printed in A5 format, it serves as a practical, analog companion to the digital interface of the E-Ink water testing device.The handbook walks users through the entire screen flow step by step, offering detailed explanations for each interface screen. This allows users to familiarize themselves with the system without needing direct access to the device.
Beyond daily use, the handbook is also a helpful tool for training sessions or onboarding. Its compact format makes it easy to carry and use alongside the device.