Capacitive Touch Interface for Automation and Control

Capacitive Touch Sliders - LCD Touch Screen and Uniform LED Lighting

Project Description

Flying by Foy, developers of sophisticated automated systems for flying performers contacted us to develop a new extension console for their Pegasus Automation System. The extension console consists of

  • A joystick
  • 2 capacitive touch sliders
  • Rotary encoder
  • Mechanical buttons for emergency stop
  • A touch screen LCD

They also wanted the extension console to communicate to their Automation system via Ethernet.

Our solution was a control system that could process inputs from the various devices provided by the client and present the results using a custom application protocol using TCP/IP over Ethernet.

This means communicating with this device is as simple as opening a simple TCP connection to this device. The system also has a DHCP client and a default IP address. The DHCP client allows the extension console to either connect to a router or obtain an IP address. This IP address can then be used by a PC trying to open a TCP connection. In case a network is not present, the default IP address for communication.

One of the challenges due to which FOY considered outside help for this project was the capacitive touch slider. These capacitive touch sliders were replacing an analog slider and FOY required the ability to detect 255 discrete levels. Blue Sparq, was not only able to provide a solution for this but also went a step further and implemented the detection of

  • A double click gesture.
  • A swipe up gesture
  • A swipe down gesture

A double click would allow the operator to move to a predetermined discrete level which is a handy feature in automation and control. With the swipe up, the user of the console would be able to touch anywhere on the slider and increment or decrement the levels moving the flying performer.

Certain regions of the panel such as the FOY logo, the names of the various sections are backlit, while the current levels of the slider were conveyed using indicator LEDs.

The client was really pleased with the final look and feel of the product delivered to them.

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