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5" non touch backpack display not working
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Please be positive and constructive with your questions and comments.

5" non touch backpack display not working

by EZRARZ3 on Tue Dec 07, 2021 11:58 am

Issue in title, bought a backpack display for a project and not getting video output on the display. Multiple PCs, micro USBs, and HDMI cords that have been verified on working displays were used but still no display. The green LED for good power is lit up but not the led for good video

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Re: 5" non touch backpack display not working

by mikeysklar on Wed Dec 08, 2021 5:23 pm

Have you been setting the output to 800x480 on the video sources you have plugged in?

Please note the TFP401 decoder chip does not contain a video scaler, it will not resize/shrink video!


https://www.adafruit.com/product/2232

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Re: 5" non touch backpack display not working

by adafruit2 on Wed Dec 08, 2021 10:38 pm

are you using a raspberry pi?

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Re: 5" non touch backpack display not working

by EZRARZ3 on Thu Dec 09, 2021 10:18 am

The screen isn't even being detected by windows on either computer

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Re: 5" non touch backpack display not working

by mikeysklar on Thu Dec 09, 2021 3:58 pm

This screen requires your OS to be outputting 800x480. If you are using a Raspberry Pi you can follow our config.txt to get going.

https://learn.adafruit.com/adafruit-5-8 ... -pi-config

Code: Select all | TOGGLE FULL SIZE
# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
#disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output
hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (here we are forcing 800x480!)
hdmi_group=2
hdmi_mode=87
hdmi_cvt=800 480 60 6 0 0 0
hdmi_drive=1

max_usb_current=1
   
# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# for more options see http://elinux.org/RPi_config.txt

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Re: 5" non touch backpack display not working

by EZRARZ3 on Thu Dec 09, 2021 9:24 pm

I am using 2 PCs not a raspberry pi, both running windows 10

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Re: 5" non touch backpack display not working

by EZRARZ3 on Thu Dec 09, 2021 11:04 pm

And even installing Intel graphics controller, I cannot even set a resolution of 800x480 output as it returns a bad constraints error

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Re: 5" non touch backpack display not working

by mikeysklar on Sat Dec 11, 2021 12:40 pm

This display is ideal for single board computers. It is not going to work with your OS if you are unable to set the resolution to 800x480.

https://www.adafruit.com/product/2232

In particular, we suggest it for use with single board computers (or desktop/laptops!) with DVI/HDMI output like the Raspberry Pi or BeagleBone Black. You can power the driver over USB as long as your computer can supply 500mA on the USB port, and then feed it video via the HDMI port. Please note the TFP401 decoder chip does not contain a video scaler, it will not resize/shrink video!

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Re: 5" non touch backpack display not working

by EZRARZ3 on Sat Dec 11, 2021 2:39 pm

Then I need to return the product

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Re: 5" non touch backpack display not working

by mikeysklar on Sat Dec 11, 2021 3:15 pm

Please send an e-mail to support@adafruit.com requesting a return for the 5" display. Include this forum link and your invoice#. As long as this display was purchased in the last 30-days the return process should be straight forward.

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Please be positive and constructive with your questions and comments.