App Controlled Mesh Network Design and Locker System Demo

Fri Aug 6 09:26:44 2021

ZuiDesigns sponsored a Grand Valley State University senior project for 2021. The goal of the project was to create a mesh
network of small devices that could connect to and be controlled from a phone application. This design is now complete and being
presented at GVSU's annual design show.

As a proof of concept for the mesh network being a functional system, the senior project team chose to install the mesh network
in a system of lockers. Users can now check out indivial lockers to use, lock and unlock them as needed, and then return the locker
to an unused state.

The current status of the mesh system can be seen here.

The student created introduction to the project can be seen on YouTube.

Category: Hardware Design, Software Design, Circuits, Project Management

COVID-19 Monitoring Website (Michigan)

Sat Apr 3 20:27:44 2021

ZuiDesigns created a COVID-19 monitoring website using New York Times data. This site tracks Kent and Ottawa counties in Michigan to provide a more detailed look at those counties. The graph will automatically add any new data without needing to refresh the webpage. It may be helpful for tracking COVID-19 locally and can be used for COVID-19 displays since the data will automatically update each day.

The site uses our Apache web server with a python script collecting data at 11:55 pm every night. The webpage is nearly entirely JavaScript and the JavaScript will poll the server to see if any new data is present to add to the graph.

An embedded live view is shown below. For a full view, head over to

Category: Software Design, Community Service

MSP432 Launchpad Switching Power Supply Shield

Tue Jul 28 22:06:59 2020

ZuiDesigns rarely gets to share PCB design images due to customer confidentiality, but this PCB was completed internally as a quick proof of concept of using the MSP432 as a PID controller to control a switch mode power supply. The design was completed in Altium with all component libraries in our own MySQL SVN Altium libraries (you can see an example of the resistors at The system allows us to quickly determine the best price and in stock options of our ZuiDesigns part numbers at our suppliers and immediately order. It allows prototypes to be purchased and managed without loading down a purchasing department.

Here are the front and back sides of the PCB. The switching power supply portion is at the bottom of the front side.

Category: Software Design, Hardware Design, Altium, Circuits, Microcontrollers

Time Tracking Mobile Application

Tue Jul 28 16:40:45 2020

ZuiDesigns has created a mobile application for time tracking for their employees. Below are a couple of pictures of it in action.

The first screen, shown below, is a login screen, which allows you to sign in and also sign out to protect your information.

The second screen, shown below, is the input data screen, which allows you to, through a drop-down menu select the project you would like to add hours to. The second area is the number of hours, which needs to be a number between 0 and 24, since it is per day. The third area is the calendar, which allows you to select a date and it will turn green, when it is valid.

The third screen, shown below, is the report screen, which shows the user how many hours are left in the project.

The fourth screen gives you access to this website.

This works for our business and could be modified to fit your needs.

Category: Software Design, Project Management

About Us

ZuiDesigns was established in 2019. We are a contract company specializing in software engineering, electrical engineering, systems engineering, technical leadership, project leadership, and program management for electronics and mechatronics projects/companies. We are also a consulting company helping mechanical engineering companies who want/need to add electronics or fully electrify their projects.

Contact Us


Text/call: +1 (323) Z-OFFICE