Full VGA resolution (640x480) 3.5" display, composite in

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Cannikin
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Re: Full VGA resolution (640x480) 3.5" display, composite in

Post by Cannikin » Thu May 26, 2016 11:51 pm

Retrohead95 wrote:What's the quality of the screen like? Is it worth the $100? I have the adafruit screen and I'm deciding if I should just delay the build a bit and get this one?
I've got photos and videos in another thread: http://www.sudomod.com/forum/viewtopic. ... 2347#p2347

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Re: Full VGA resolution (640x480) 3.5" display, composite in

Post by Retrohead95 » Fri May 27, 2016 2:41 am

Cannikin wrote:
Retrohead95 wrote:What's the quality of the screen like? Is it worth the $100? I have the adafruit screen and I'm deciding if I should just delay the build a bit and get this one?
I've got photos and videos in another thread: http://www.sudomod.com/forum/viewtopic. ... 2347#p2347
Wow, thanks, that's definitely worth the price difference. Hopefully they dont sell out before I get one.

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Re: Full VGA resolution (640x480) 3.5" display, composite in

Post by Fleder » Fri May 27, 2016 4:37 am

Popcorn wrote:@Fleder Google "GERT VGA 666". Might be a viable solution although you'll lose all your GPIOs

Edit: according to this, there are still 6 GPIOs free
With some remapping, you could still get PWM audio or graceful shutdowns
It will definitely be your shutdown method, since i am using a USB DAC. Plus, you worked so hard on this :)

Also, i made myself a bit more space by switching my step-up module :D
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Re: Full VGA resolution (640x480) 3.5" display, composite in

Post by Helder » Fri May 27, 2016 5:52 am

Ah I love ceramic caps of high capacitance, they replace those bulky electrolytic capacitors wonderfully and are so tiny. Where did you buy that step up?
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Re: Full VGA resolution (640x480) 3.5" display, composite in

Post by Fleder » Fri May 27, 2016 6:07 am

Helder wrote:Ah I love ceramic caps of high capacitance, they replace those bulky electrolytic capacitors wonderfully and are so tiny. Where did you buy that step up?
At exp-tech.de.
It is a Pololu 12V Step-Up U3V12F12

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Re: Full VGA resolution (640x480) 3.5" display, composite in

Post by marcushg » Mon May 30, 2016 4:48 pm

wow i just recieved the same one today and was really surprised of how tiny it is! i also got the other stepups first...
now im just waiting for the screen to arrive! i got one of those 320x240 from amazon and the real 640x480 from ebay (lets you make an offer, got it for less than 70€) will report when i get them (can be two weeks more...)

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Re: Full VGA resolution (640x480) 3.5" display, composite in

Post by dirtybeagles » Mon May 30, 2016 7:21 pm

[mention]cannikin[/mention]

Do you mind showing us how youth connected your screen? Did you have to convert it to run off 5v?

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Re: Full VGA resolution (640x480) 3.5" display, composite in

Post by Cannikin » Mon May 30, 2016 7:50 pm

dirtybeagles wrote:Do you mind showing us how youth connected your screen? Did you have to convert it to run off 5v?
Yep, mine runs off of 5V just fine. It has 5V and GND connections on the controller board so I just wired one each of the 5V and ground GPIO pins on the Pi to those, and then the composite signal from the Pi to the controller board as well. You don't really need the separate composite ground wire as ground is ground and as long as you've got one you're good to go.

The fit was also amazingly easy: it was a perfect fit to the GB case. I have the ribbon cable at the top, which ended up making the image inverted, but you can add a setting in /boot/config.txt to flip it around:

Code: Select all

display_rotate=2

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Re: Full VGA resolution (640x480) 3.5" display, composite in

Post by Andrewt704 » Wed Jun 01, 2016 4:53 pm

My 640 screen arrived today. Same control board as Cannikin, and looks to be super easy to wire up. Job for the weekend.

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Re: Full VGA resolution (640x480) 3.5" display, composite in

Post by dirtybeagles » Wed Jun 01, 2016 7:13 pm

Andrewt704 wrote:My 640 screen arrived today. Same control board as Cannikin, and looks to be super easy to wire up. Job for the weekend.
Post pictures of your progress!! love to see it.

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