7 Inch DIY Touch Screen

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Supporting the Seven-inch Screen

Use a nut (M3) and a copper post (M3 * 8 + 6) to support the seven-inch touch screen.

7-inch.jpg

Rendering

7-inch1.jpg

This 7-inch touch screen is compatible with any version of the Raspberry Pi.

With a Raspberry Pi 4

Connect the Raspberry Pi 4 to HDMI with a micro HDMI cable.

7-inch2.jpg

Wire the USB cable up to Raspberry Pi 4.

7-inch3.jpg

Give it a power supply, Plug and play.

7-inch4.jpg

Adjust the Resolution of Raspberry Pi 4

Step 1: Unfold the menu bar of Raspberry Pi.

7-inch5.jpg

Step 2: Select screen configuration.

7-inch6.jpg

Step 3: Select Configure.

7-inch7.jpg

Step 4: Select Screens.

7-inch8.jpg

Step 5: Choose the resolution you want.

7-inch9.jpg

With a Raspberry Pi 3

Plug a dual-head HDMI cable in Raspberry Pi 3.

7-inch10.jpg

Connect the Raspberry Pi 3 with a USB cable.

7-inch11.jpg

Attach a power supply to it, turn it on.

7-inch12.jpg

Adjust the Resolution of Raspberry Pi 3

Step 1: Open config.txt
There are two methods to do so. 
Method A:First prepare a computer on Windows, Mac or Linux, and a TF card on which the Raspbian system has been burnt. Plug the TF card into the computer with a card reader.Now, open /boot and find the config.txt file. If your computer runs on Windows, DO NOT open the file by Word (also better not notepad) in case of format issues. You are advised to use other edit tools like Notepad++ . 
Method B:Log in to Raspberry Pi remotely. Run the command to edit config.txt

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