Still waiting for support 48h after my first message. it doesn't work (mac or rpi4). tried all the instructions on wiki. what do i do? return it?

Dear Customer, Which email did you contact? It seems that we didn't receive email from you. Could you send an email for us on Amazon now? I will reply you right now. It will be better if you could send some images about the hardware connection. Our engineer team will help you to resolve the product problem.

Can the controller board be removed from the back and re-attached with a ribbon cable that way the display can lie flat on my project?

Seller answer is only HALF true. The PCB board requires *two* ribbon cables. One is a simple standard ribbon cable found on all these LCD screens. The other is a specialized cable that has ICs on it and CANNOT BE EXTENDED.

When connected to a pi 3 or pi 4, does the pi power the display or does both the pi and the display need their own power supply?

The screen is powered by what they list as the "touch port" in the photos. So if you plug the pi 4b usb port into the touch port on the screen, it will receive power using the Raspberry pi's power. I would suggest using an official Raspberry Pi power adapter, or at least one with higher than a 2.5a power rating. If you do not want to use the touch screen, then I believe you would have to have a separate power adapter to power the screen independantly. I have tested this on a RPi 4B.

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waveshare 7.9inch Capacitive Touch Screen LCD Compatible with Raspberry Pi 5/4B/3B+/3A+/2B/B+/A+/Zero/Zero W/WH/Zero 2W CM3+/4 400×1280 Resolution HDMI IPS Supports Jetson Nano/Windows

Product ID: 213146028

Details

Aspect Ratio
Unknown
Brand
waveshare
Resolution
400 x 1280
Screen Size
7.9 inches
Screen Surface Description
Glossy

🎯400×1280 crisp resolution

📺7.9-inch vibrant IPS display

🤏5-point capacitive touch

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Description

🚀 Elevate your Raspberry Pi game with a touchscreen that means business!

IMMERSIVE VISUALS - Experience razor-sharp 400×1280 resolution on a vivid 7.9-inch IPS screen with 178° wide viewing angles for flawless clarity from any angle.
SEAMLESS TOUCH CONTROL - Navigate effortlessly with 5-point capacitive touch technology and a durable 6H tempered glass panel—perfect for multitasking pros.
PLUG PLAY VERSATILITY - Compatible with Raspberry Pi 5/4B/3 series, Jetson Nano, and Windows 7-11—driver-free setup means you’re up and running in seconds.
MULTI DEVICE CONNECTIVITY - HDMI and USB interfaces plus a 3.5mm audio jack let you connect peripherals and enjoy rich multimedia experiences without hassle.
PORTRAIT OR LANDSCAPE FLEXIBILITY - Default portrait mode with easy software config switch to landscape—customize your workspace to match your workflow and style.

The Waveshare 7.9-inch Capacitive Touch Screen LCD delivers a sharp 400×1280 resolution on an IPS panel with 178° viewing angles, featuring 5-point touch control on a tough 6H tempered glass surface. Compatible with a wide range of Raspberry Pi models, Jetson Nano, and Windows OS, it offers HDMI and USB connectivity plus audio support, making it a versatile, plug-and-play display solution for developers, gamers, and tech enthusiasts seeking a sleek, professional-grade touchscreen monitor.

Specifications

ASIN	B087CNJYB4
Additional Features	Touchscreen
Aspect Ratio	Unknown
Best Sellers Rank	#2,446 in Computer Monitors #2,588 in Single Board Computers (Computers & Accessories)
Brand	waveshare
Cable Length	7.9 inches
Color	7.9inch HDMI LCD
Compatible Devices	Raspberry Pi 5/4B/3B+/3A+/2B/B+/A+/Zero/Zero W/WH/Zero 2W, CM3+/4, Jetson Nano, Windows 11/10/8.1/8/7
Connectivity Technology	HDMI, USB
Contrast Ratio	1000:1
Customer Reviews	4.0 4.0 out of 5 stars (125)
Display Resolution Maximum	400 x 1280
Display Technology	LCD
Display Type	LCD
Hardware Connectivity	HDMI
Included Components	HDMI Port, USB Port, 3.5mm headphone/speaker jack.
Item Weight	0.01 kg
Manufacturer	Waveshare
Model Name	7.9inch HDMI LCD
Model Number	7.9inch HDMI LCD
Mounting Type	Panel Mount
Native Resolution	400×1280
Number of Component Outputs	1
Picture Quality Enhancement Technology	IPS
Pixel Pitch	0.28
Power Consumption	2 watts
Refresh Rate	60 hertz
Resolution	400 x 1280
Screen Finish	Glossy
Screen Size	7.9 inches
Shape	Rectangular
Specific Uses For Product	Gaming, Programming
Total Number of HDMI Ports	1
Total USB 3.0 Ports	2
Total Usb Ports	2
UPC	738628504692 614961956704
Unit Count	1 Count
Viewing Angle	178 degrees
Voltage	5 volts

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$215.41

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to British Virgin Islands.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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