Remotely Piloted Aircraft System (RPAS) Development

Plexus Controls designs and builds special applications and Remotely Piloted Aircraft Systems (RPAS) platforms. This includes standard products available for order and complete solutions customised for a specific customer needs.

Consumer RPAS are very limited in size and with no extra capabilities to carry payloads. On the other hand, commercial RPAS are designed for multi tasking and generally over engineered for most tasks making them too expensive. Plexus Controls can assist you with all your special applications needs including:

  • Defining the RPAS application requirements
  • Optimising the RPAS platform design to meet the application needs
  • Building and testing prototypes
  • Build the data reports
  • Visualize the data presentation using graphing and heat maps.
  • Pricing and budgetary numbers

Need to demonstrate regulatory compliance or drop off payloads? Need to check on your livestock from the barn or scare away birds? We have a drone app for that!

Here are some examples of the RPAS systems we have designed:

Radio Frequency Detector for Wireless Tower Positioning











Fully customized design to meet performance and cost targets, when loaded with a flight plan these RPAS are fully autonomous, they take off, fly and land on their own. This RPAS application is used to identify antenna and communication tower positioning & height For non line-of-sight point to point radio links this is particularly valuable as software modelling is not reliable and the risk of building an antenna tower in the wrong location is expensive. The RPAS includes video recording, on screen text showing flight information and full data text logging for heat mapping on Google Earth.


Aerial Methane Leak Detector











This project uses an off the shelf DJI Phantom 4 RPAS that has a methane laser detector and microSD data log payload attached. Methane concentration is read and logged with date, time and GPS coordinates for post processing on the ground where a methane concentration heat map is overlaid onto standard Google maps.

High Performance Aerial Video System









High definition video with built in First Person Video (FPV) system (flying the system from the pilot’s eye) were key to this project. The system also needed to have a long flight time and very stable operation to avoid video degradation.