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Documents sudo Sergeant 17: Pi No HDMI Revisited GPIO
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  • Author Author: tariq.ahmad
  • Date Created: 30 Apr 2018 1:33 PM Date Created
  • Last Updated Last Updated: 13 Aug 2018 10:54 PM
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sudo Sergeant 17: Pi No HDMI Revisited GPIO

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Felix reviews the connections between the Raspberry Pi, the TFT adapter, and the button matrix for the Raspberry Pi No HDMI projects.

 

 

sudo Sergeant 13: Driving a TFT Screen Using GPIO

 

sudo Sergeant 14: Enabling Buttons on the Raspberry Pi No HDMI

 

Episode 322: Rasp Pi No HDMI - Portable MAME Part 1

 

Episode 328: Rasp Pi No HDMI - Portable MAME Part 2

 

Felix revisits the Raspberry Pi no HDMI project. There were quite a few questions on the community regarding the GPIO connections between the Raspberry Pi and the TFT along with the button matrix.  The github repository for this project includes the bill of material, data sheets, enclosure, OS setup, and schematics.  In there you can find the GPIO set up, along with a spreadsheet for the GPIO connections, under the OS set up.  A good reference for this can be found at www.raspberrypi.org/documentation/hardware/raspberrypi/dpi/README.md.  There you can find a chart that shows the different modes that can output the display through the GPIO.

They are using the 565 configuration for the TFT display. It opens up GPIO 27 to 20 for the button matrix.  The connections they go with for the TFT screen are GPIO 27, 22, 26, 23, 24, 25, 20, and 21.  Finally, Felix shows you where to look for the connections on the Raspberry Pi itself.

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