Help converting BW screen to 5V

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stevetingate
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Re: Help converting BW screen to 5V

Post by stevetingate » Fri Mar 09, 2018 5:28 pm

trisfoz wrote:
Fri Mar 09, 2018 5:24 pm
stevetingate wrote:
Fri Mar 09, 2018 4:21 pm
trisfoz wrote:
Fri Mar 09, 2018 2:59 pm


Hi Hex, Thank you for your reply and your solution.

I used the 3.3V on the raspberry pi and wired it as in your pic to power the screen and it works great.
I can now finish my build.

Thank you and Wailer for your help.
Hey mate

thanks for the images

so did you wire anything to the power pads in the bottom left of the raspberry pi like in the image ?

or did you just go red, black to the gpio pins and and yellow to tv ?
Hi,

No I did not wire anything to the 5V power pads. I just wired the red and black to the gpio pins (3.3V and GND) and and yellow to the tv composit pad.

Good luck.
Thanks.

thanks maye

just wanted to get it right!

and the red wire you ran from the vcc to the gpio pin ? did you just leave the other red wire unsoldered ? or unsolder it from the display board ?

stevetingate
Posts: 6
Joined: Thu Jan 18, 2018 1:55 pm

Re: Help converting BW screen to 5V

Post by stevetingate » Fri Mar 09, 2018 6:02 pm

stevetingate wrote:
Fri Mar 09, 2018 5:28 pm
trisfoz wrote:
Fri Mar 09, 2018 5:24 pm
stevetingate wrote:
Fri Mar 09, 2018 4:21 pm


Hey mate

thanks for the images

so did you wire anything to the power pads in the bottom left of the raspberry pi like in the image ?

or did you just go red, black to the gpio pins and and yellow to tv ?
Hi,

No I did not wire anything to the 5V power pads. I just wired the red and black to the gpio pins (3.3V and GND) and and yellow to the tv composit pad.

Good luck.
Thanks.

thanks maye

just wanted to get it right!

and the red wire you ran from the vcc to the gpio pin ? did you just leave the other red wire unsoldered ? or unsolder it from the display board ?
got the screen working but it seems fuzzy

any ideas ?

stevetingate
Posts: 6
Joined: Thu Jan 18, 2018 1:55 pm

Re: Help converting BW screen to 5V

Post by stevetingate » Fri Mar 09, 2018 6:11 pm


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Re: Help converting BW screen to 5V

Post by VeteranGamer » Fri Mar 09, 2018 7:20 pm

stevetingate wrote:
Fri Mar 09, 2018 6:02 pm
stevetingate wrote:
Fri Mar 09, 2018 5:28 pm
trisfoz wrote:
Fri Mar 09, 2018 5:24 pm


Hi,

No I did not wire anything to the 5V power pads. I just wired the red and black to the gpio pins (3.3V and GND) and and yellow to the tv composit pad.

Good luck.
Thanks.

thanks maye

just wanted to get it right!

and the red wire you ran from the vcc to the gpio pin ? did you just leave the other red wire unsoldered ? or unsolder it from the display board ?
got the screen working but it seems fuzzy

any ideas ?
Welcome to the world of the BW 3.5 composite....

There's gonna a level of fuzziness with these screens....

If you change/edit the framebuffer in config.txt to

320
240

That will help a little...
And it's also adviseable to download RXBrad GBZ35 theme from Retropie, or you'll be back wondering why the menus are hard to read (still not clear, but workable)....


.

stevetingate
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Joined: Thu Jan 18, 2018 1:55 pm

Re: Help converting BW screen to 5V

Post by stevetingate » Fri Mar 09, 2018 9:12 pm

appreciate the feedback!

what screen would you recomend that would resolve this issue ?

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Hex
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Re: Help converting BW screen to 5V

Post by Hex » Fri Mar 09, 2018 11:00 pm

You only need to poorly drawn black, red, and yellow wires. not the one actually soldered in the image.
Sent from 20,000 leagues under the sea

My Cardboard GBZ build : http://www.sudomod.com/forum/viewtopic.php?f=9&t=2851

EmulationStation optimization for Pi Zero : http://www.sudomod.com/forum/viewtopic.php?f=8&t=2922

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Hex
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Re: Help converting BW screen to 5V

Post by Hex » Fri Mar 09, 2018 11:08 pm

VeteranGamer wrote:
Fri Mar 09, 2018 7:20 pm
Welcome to the world of the BW 3.5 composite....

There's gonna a level of fuzziness with these screens....

If you change/edit the framebuffer in config.txt to

320
240

That will help a little...
And it's also adviseable to download RXBrad GBZ35 theme from Retropie, or you'll be back wondering why the menus are hard to read (still not clear, but workable)....
Hey VeteranGamer. This is my alternative frontend for small screen frontend called Viper.

Image
Sent from 20,000 leagues under the sea

My Cardboard GBZ build : http://www.sudomod.com/forum/viewtopic.php?f=9&t=2851

EmulationStation optimization for Pi Zero : http://www.sudomod.com/forum/viewtopic.php?f=8&t=2922

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Re: Help converting BW screen to 5V

Post by VeteranGamer » Sat Mar 10, 2018 12:57 am

Hex wrote:
Fri Mar 09, 2018 11:08 pm
VeteranGamer wrote:
Fri Mar 09, 2018 7:20 pm
Welcome to the world of the BW 3.5 composite....

There's gonna a level of fuzziness with these screens....

If you change/edit the framebuffer in config.txt to

320
240

That will help a little...
And it's also adviseable to download RXBrad GBZ35 theme from Retropie, or you'll be back wondering why the menus are hard to read (still not clear, but workable)....
Hey VeteranGamer. This is my alternative frontend for small screen frontend called Viper.

Image
I remember from your CardiPi build (nice build)...

Themes in general look a little better (IMHO) on the SPI screen

(especially if the size of the screen is from 2.4"-3.2")
It's the composite screen that have issues with the fuzziness


Is your theme downloadable via RetroPie

.

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VeteranGamer
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Re: Help converting BW screen to 5V

Post by VeteranGamer » Sat Mar 10, 2018 12:59 am

stevetingate wrote:
Fri Mar 09, 2018 9:12 pm
appreciate the feedback!

what screen would you recomend that would resolve this issue ?

The screens fine for playing games....
It's just a bit too small for the text (especially being a composite)...


.

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Hex
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Re: Help converting BW screen to 5V

Post by Hex » Sat Mar 10, 2018 3:00 am

VeteranGamer wrote:
Sat Mar 10, 2018 12:57 am
I remember from your CardiPi build (nice build)...

Themes in general look a little better (IMHO) on the SPI screen

(especially if the size of the screen is from 2.4"-3.2")
It's the composite screen that have issues with the fuzziness


Is your theme downloadable via RetroPie

.
It is not a theme but a Frontend. You can find the sources here https://github.com/hex007/Viper
Checkout the settings.xml file for important info. It is easiest if you are using Adafruit retrogame with it.
MOD keys like CTRL, ALT, SHIFT dont work for Dpad, A,B, Start. Those are the keys used by Viper
Sent from 20,000 leagues under the sea

My Cardboard GBZ build : http://www.sudomod.com/forum/viewtopic.php?f=9&t=2851

EmulationStation optimization for Pi Zero : http://www.sudomod.com/forum/viewtopic.php?f=8&t=2922

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