Pi zero 3.5 display settings help!

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Deramin
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Pi zero 3.5 display settings help!

Post by Deramin » Tue Aug 23, 2016 5:23 pm

Hello again!
So this time I need some help with the proper setting I need to make my 3.5 inch screen from gearbest work.

So far it works and loads up but I am having issues figuring out this overscan business as well as getting the font to be legible once its in emulation station so that I can read the names of the games.

I also am wondering what its refresh rate is and how to change it... my googlefoo seems to be weak today.

Thanks much for all your help guys !

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ABH
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Re: Pi zero 3.5 display settings help!

Post by ABH » Tue Aug 23, 2016 5:48 pm

#1 Edit your config file
This is my config file :

Code: Select all

# For more options and information see
# http://www.raspberrypi.org/documentation/configuration/config-txt.md
# Some settings may impact device functionality. See link above for details

# 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=0
overscan_right=0
overscan_top=-2
overscan_bottom=-2
# uncomment to force a console size. By default it will be display's size minus
# overscan.
framebuffer_width=720
framebuffer_height=480
# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=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

# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

# Uncomment this to enable the lirc-rpi module
#dtoverlay=lirc-rpi

# Additional overlays and parameters are documented /boot/overlays/README

# Enable audio (loads snd_bcm2835)
dtparam=audio=on

gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=256
overscan_scale=1
#2 ( Edit your xml file of theme are u using )
http://www.sudomod.com/forum/viewtopic. ... 106#p11547

#3 This is if you want to change The Command Line Font Size
http://www.raspberrypi-spy.co.uk/2014/0 ... font-size/

Good luck .

Deramin
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Re: Pi zero 3.5 display settings help!

Post by Deramin » Wed Aug 24, 2016 5:59 am

Hey thanks that will help me a lot!

Just wondering though is the screen you used also the gearbest one? the resolution you have in your config.txt is way bigger than what the site says it is :P

Thanks for your help man!

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Re: Pi zero 3.5 display settings help!

Post by BadBert » Wed Aug 24, 2016 8:00 am

thnx for the tips! I'll have to set up my screen soon... ;)
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My 2nd GBZ build -=WIP HERE=- -> going with HDMI!

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Re: Pi zero 3.5 display settings help!

Post by ABH » Wed Aug 24, 2016 10:29 am

Deramin wrote:Hey thanks that will help me a lot!

Just wondering though is the screen you used also the gearbest one? the resolution you have in your config.txt is way bigger than what the site says it is :P

Thanks for your help man!
Your welcome ;)
yes i know im using bigger resolution
Don't Worry im aolso using 320 x 240 display .( i set it bigger because it's give me cleaner logo for raspberry when start up , and semi to full of the screen using )

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Re: Pi zero 3.5 display settings help!

Post by BadBert » Tue Sep 20, 2016 4:17 am

ABH wrote:
Deramin wrote:Hey thanks that will help me a lot!

Just wondering though is the screen you used also the gearbest one? the resolution you have in your config.txt is way bigger than what the site says it is :P

Thanks for your help man!
Your welcome ;)
yes i know im using bigger resolution
Don't Worry im aolso using 320 x 240 display .( i set it bigger because it's give me cleaner logo for raspberry when start up , and semi to full of the screen using )
I used the code you posted, copied and pasted the whole thing to my file, but it does not seem to do anything? :(
My first GBZ build -=HERE=- -> Became a gift to my little brother!
My 2nd GBZ build -=WIP HERE=- -> going with HDMI!

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Re: Pi zero 3.5 display settings help!

Post by ABH » Tue Sep 20, 2016 4:43 am

BadBert wrote:
ABH wrote:
Deramin wrote:Hey thanks that will help me a lot!

Just wondering though is the screen you used also the gearbest one? the resolution you have in your config.txt is way bigger than what the site says it is :P

Thanks for your help man!
Your welcome ;)
yes i know im using bigger resolution
Don't Worry im aolso using 320 x 240 display .( i set it bigger because it's give me cleaner logo for raspberry when start up , and semi to full of the screen using )
I used the code you posted, copied and pasted the whole thing to my file, but it does not seem to do anything? :(
Double check the config file if it save or not
"I prefer to use terminal to edit config file "
What is the exact thing that you want to change ?

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Re: Pi zero 3.5 display settings help!

Post by BadBert » Tue Sep 20, 2016 5:23 am

ABH wrote:Double check the config file if it save or not
"I prefer to use terminal to edit config file "
What is the exact thing that you want to change ?
I checked if it was saved with the new data, and it was.

i wanted to change font size, and because the rest of the pi was not setup yet, i started with the file i could edit from my computer using a micro sd card reader.

After that i have to change 2 and 3 you mentioned.

I also want to change overscan and position of the picture, i thought that was in the file you posted too, but i cant se any change (in anything for that matter)
My first GBZ build -=HERE=- -> Became a gift to my little brother!
My 2nd GBZ build -=WIP HERE=- -> going with HDMI!

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Re: Pi zero 3.5 display settings help!

Post by Zero » Tue Sep 20, 2016 6:26 am

Font size isn't changed in the config.txt file, it's done via the carbon.xml file in a theme folder. There's a guide here:

http://www.sudomod.com/forum/viewtopic.php?t=159

The overscan changes are done in the config.txt file, you're correct there. Guide here:

http://www.opentechguides.com/how-to/ar ... tting.html

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