Designed & engineered a custom Android touchscreen interface for a complex BACnet system

Technology Used

  • Android Development (Java)
  • Firmware Development
  • BACnet Integration
  • Electrical Engineering
  • UI/UX Development
  • Custom Single App Mode for Android
Phoenix Controls is a BACnet application designed and engineered by AndPlus.


"The designer was excellent, bringing together a modern aesthetic and an industrial design. While each team member was very impressive individually, what made them unique was how well they worked together. I enjoyed seeing them bounce ideas around until they came up with a solution everyone was satisfied with. They were not territorial and were able to coordinate the various elements of the project seamlessly."

- Clutch Review



AndPlus designs and engineers custom BACnet and other building automation solutions.

The Challenge

Phoenix Controls manufactures valves that are commonly found in hospital rooms and labratories to provide reliable space pressurization. In order to stay ahead of the competition Phoenix knew that they needed to update their controls to look and feel as high end as their air handling valves are. Phoenix contracted AndPlus to build a new custom touchscreen control interface that would directly interact with their high precision air handling valves.

AndPlus' first task was to open up communication between the BACnet controller that is onboard on the Air handling unit, and the Android tablet that Phoenix has chosen for their touch screen interface. AndPlus was able to customize an RS232 connector to communicate over twisted pair wiring in order to read and write the points that BACnet communicated over. Once AndPlus was able to establish communication, the Agile Software Development process began in order to build out the specific user stories necessary to deliver a market ready product to Phoenix's customers. 


How we architect solutions for complex connected devices

It all starts with the AndPlus Technical Architects. A team of Senior Engineers that map out every possible tech stack for your project prior to kickoff. The right tech, every time.


The Solution 

The solution was delivered to Phoenix Controls and is now installed in hundreds of its client hospitals worldwide, providing users with easy access to essential environmental data. Operators get a quick glance at high and low limits, occupancy and alarm status. It’s easy to make changes using the touch screen interface, and numerous bug fixes and enhancements received attention between 2014 and 2019. The use of an agile development approach was very effective, and PC was very satisfied with the outcome as well as with the ongoing incremental updates. Finding the right, agile solution for a client's problem is par for the course for the AndPlus team. Whatever the issue facing your company, a consultation with our engineers will provide previously unconsidered options for you.



AndPlus understands the communication between building level devices and mobile devices and this experience allowed them to concentrate more on the UI functions of the project. They have built a custom BACnet MS/TP communication stack for our products and are looking at branching to other communication protocols to meet our market needs. AndPlus continues to drive our product management to excellence, often suggesting more meaningful approaches to complete a task, and offering feedback on UI and Human Interface based on their knowledge from past projects.

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