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

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

Post by Fox » Thu May 12, 2016 9:23 am

Here is this display (640x480) on eBay. I asked the seller for the dimensions of the screen inside the body. $21 US Dollars.

http://www.ebay.com/itm/3-5-TFT-LCD-Col ... Sw3ydVpLDf

Isn't this about the same thing, minus the VGA port, etc?

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

Post by Cannikin » Thu May 12, 2016 10:55 am

Fox wrote:Here is this display (640x480) on eBay. I asked the seller for the dimensions of the screen inside the body. $21 US Dollars.

http://www.ebay.com/itm/3-5-TFT-LCD-Col ... Sw3ydVpLDf

Isn't this about the same thing, minus the VGA port, etc?
Hmmm... that looks exactly like the Amazon one from Niceshopping...it might be the same 320x240 one. I saw a mention somewhere on the forums where there are lots of monitors that say 640x480 resolution but upon further inspection are really 320x240. It seems the real 640x480 ones all start around $100ish so it seems unlikely that that ebay one is really that good of a deal...but it could be worth a try for $20!

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

Post by Fox » Thu May 12, 2016 12:21 pm

Cannikin wrote:
Fox wrote:Here is this display (640x480) on eBay. I asked the seller for the dimensions of the screen inside the body. $21 US Dollars.

http://www.ebay.com/itm/3-5-TFT-LCD-Col ... Sw3ydVpLDf

Isn't this about the same thing, minus the VGA port, etc?
Hmmm... that looks exactly like the Amazon one from Niceshopping...it might be the same 320x240 one. I saw a mention somewhere on the forums where there are lots of monitors that say 640x480 resolution but upon further inspection are really 320x240. It seems the real 640x480 ones all start around $100ish so it seems unlikely that that ebay one is really that good of a deal...but it could be worth a try for $20!
You are probably right. I just started looking around and even though they will say 640x480 in the title, the description will say (most of the time) 320x240. Bummer.

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

Post by Cannikin » Thu May 12, 2016 2:57 pm

Kilren wrote:Did you find anything that hints towards it's power consumption?
No, but assuming it doesn't include any additional info in the box, and I can't pick up any hints from the components on the board, I'll hook up my variable power supply at maybe 9v and cross my fingers! Most of these displays seem to range anywhere from 5V to 24V in their range of acceptable voltages so 9v seems like a safe-ish bet. It would be awesome if it worked out of the box at 5v but I picked up one of these in case the display requires more.
Kilren wrote:I'd be very interested in a side by side comparison with the adafruit display, and the $15 backup displays on amazon.
I've got one of those $15 displays coming from Amazon as well so I'll definitely do a side-by-side comparison once I get them both.

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

Post by RasputiNZ » Thu May 12, 2016 9:18 pm

I don't know if this helps but I found what level looks to be the same board, it says 5v in the description.

http://s.aliexpress.com/nQzAbqiU
(from AliExpress Android)

PD035VX2 TFT-LCD:
Display size3.5"
widehighthan4:3
Outline dimension84.25 (W) X65.4 (H) X3.45 (D) mm
viewing angle45/60/55/55
branchResolutionrate640RGB (H) * 480 (V)
yesthandegree350:1
bright degree250cd/m2
Interface typesingleDigital 50PIN (TTL)
Back lightLEDs
response time10ms
working temperature-20C ~SeventyC
Power input5V

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

Post by Cannikin » Thu May 12, 2016 9:26 pm

RasputiNZ wrote:I don't know if this helps but I found what level looks to be the same board, it says 5v in the description.
Holy cow that price! I wonder if there are any quantity requirements for that one?

If this board works it seems like it would be a no-brainer for use in the GBZ!

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

Post by Cannikin » Thu May 12, 2016 9:29 pm

Actually that's just the driver board—it doesn't include the screen!

But great to know the voltage, thanks!

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

Post by RasputiNZ » Thu May 12, 2016 9:39 pm

Yeah sorry its just the board. Seems to be the only ones available apart from the first one posted that does a higher resolution. So many on Ali that say 640 but they are not.

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

Post by Popcorn » Thu May 12, 2016 11:03 pm

Here's some light bedside reading for you.

I found the spec sheet on that video screen

http://www.vslcd.com/Specification/PD035VX2.pdf

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

Post by Kilren » Thu May 12, 2016 11:11 pm

Popcorn wrote:Here's some light bedside reading for you.

I found the spec sheet on that video screen

http://www.vslcd.com/Specification/PD035VX2.pdf
Not sure if this puts me to sleep or keeps me awake!

This does recommend that voltage be set at 9V, but 5V is definitely obtainable and is listed.

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