Touch panel adds complete HMI to Raspberry Pi

July 27, 2015 // By Graham Prophet
4D Systems ( Sydney, Australia) and distributor element14 have introduced the 4DPi-24-HAT, a touch panel that enables the display to function with the Raspberry Pi without the need of a mouse or an alternate HMI device.

4DPi-24-HAT is a 2.4-inch, 320x240 pixel fully HAT standard compliant primary display with resistive touch that plugs directly on top of a Raspberry Pi. It displays the primary output of the Raspberry Pi, which is normally sent to the HDMI or Composite output. The integrated Resistive Touch panel enables the display to function with the Raspberry Pi without the need for a mouse or an alternative HMI device.

The 4DPi-24-HAT is designed to work with the Raspbian Operating System and is powered directly off the Raspberry Pi’s 40-way header requiring no external power supply and allows touch-based interaction with the Raspbian Operating System. The display has a typical framerate of 25 frames per second, which can be increased with kernel compression. The display’s backlight can be turned on or off using an on-board jumper or dimmed using PWM controls. The on-board EEPROM allows for quick identification of the 4DPi-24-HAT by the Raspberry Pi. The 4DPi-24-HAT is compatible with Raspberry Pi A+, B+ and Raspberry Pi 2 and is fully HAT Standard compliant.

“Our standard display modules used with the 4D Serial Pi Adaptor, as well as our 3.2-inch and 3.5-inch primary displays for the Raspberry Pi, have been very popular among the Raspberry Pi community and we are very excited to release our first fully HAT standard compliant primary display together with element14. We look forward to seeing all the different applications that the community will create with the 4DPi-24-HAT,” comments Markku Riihonen, Products and Business Development Manager, 4D Systems.

The 4DPi-24-HAT has been developed by 4D Systems and is exclusively available through Farnell element14 in Europe for £22.40 (UK Pounds or equiv.) and on 4D Systems’ Online Store.

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