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How to connect rasberry pi 400 (keyboard) with an element 14 7" Touchscreen display.

I tried to connect the 7" Touchscreen display the same way i connect the keyboard with a normal monitor but the screen does not turn on.

i have seen other tutorial where people normally connect the screen with a normal pi 4 and then the keyboard but, i think there should be better way to connect the 7" touchscreen with the pi keyboard directly.

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ralphjy 8 days ago +1 suggested

It would be useful if you provide the part number of the display that you are using and describe how you have it connected.

I assume that you are using an HDMI touchscreen similar to the DFRobot DFR0506…

0 shabaz 8 days ago

Hi,

I'm not surprised you got no output, because the Pi 400 doesn't have a display (DSI) connector to send the video signal to the 7" display.

How was it connected? Are you perhaps using different hardware?
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0 ralphjy 8 days ago

It would be useful if you provide the part number of the display that you are using and describe how you have it connected.

I assume that you are using an HDMI touchscreen similar to the DFRobot DFR0506 https://www.newark.com/dfrobot/dfr0506/7-hdmi-display-w-capacitive-touchscreen/dp/87AH5890?st=hdmi%20touchscreen. That display requires a USB connection for power and touchscreen data in addition to the HDMI connection.
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0 cstanton 7 days ago

Locked, duplicate.
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