5" Jumpy screen?

monstermadeofman

So what are you using to charge the battery? I'm assuming you have a regulator for battery charging? Because all that is, is a step up converter.

josephchrzempiec

@monstermadeofman I have a 5v 4a input is my power supply. to 3.7v 1a output charging module.

monstermadeofman

Might i suggest making this alot easier by putting it all into one module as I feel you are over complicating the entire thing.

http://www.banggood.com/37V-Liion-Battery-Mini-USB-To-USB-A-Power-Apply-Module-p-928948.html?p=9B1915347037201311DI

This is used quite alot in GBZ builds. It let's you charge and play at the same time. It also has the powerboost built into the board so no need for that.

the other option while alot more expensive is the Adafruit Powerboost 1000c

Just google it. So many places sell them.

cyperghost

@monstermadeofman
I don't want to stop your helping hand but ....

@josephchrzempiec said in 5" Jumpy screen?:

Hello thank you all for the reply back. It came with a rear view car camera and i tried that. Surely a clear perfect picture no jumping around. It's only in the raspberry pi it's doing this.

monstermadeofman

@cyperghost

Yeah I think the issue at this point man is how he's supplying power. Seems a bit convoluted and is probably a power issue if it's ok when just using the camera with it.

josephchrzempiec

I want to try something Let me isolate the raspberry pi from the LCD and power it up on a different Power supply and see what happens.

cyperghost

@monstermadeofman Do you think the power regulator is messing the composite signal? That could be possible.... So it should work with separated power supplies.
But it could also be a bad composite connection or a bad config.

monstermadeofman

That's what I was thinking. I'm using a composite screen with with a powerboost 1000C and I'm not getting an issue. But I think the fact he's using individual parts that might not like working together or could be wired incorrectly.

josephchrzempiec

@cyperghost And there goes that problem I isolate the screen from the Raspberry pi and just Power the LCD with it's only 5v 2a Power supply and it confirms my thoughts there is Noise on the lines. The LCD comes on with no problem nice and clear and clean.

cyperghost

@monstermadeofman
We will see in the next posting of @josephchrzempiec. Be prepared :)

EDIT: Respect you were right :)

cyperghost

@josephchrzempiec
Nice it works :)
Do you use the same grounding signal for all?
Please then graduate @monstermadeofman

josephchrzempiec

Someone Shake my head off my shoulders please LOL

Yes i still keep a common ground between both power supplies bypassing the buck boost converters. As i looked online A lot of these Buck boost converters Because there old design That they are notorious For noise on the lines. I do have a power boost 1000c from adafruit But i do not have other buck boost converter like in your I'm i will look into getting one. Meanwhile i think with a little help from filtering caps might for now Help clear up some of the Screaming noise from the lines.

monstermadeofman

Dude you don't need another power converter.

The Powerboost is the converter! It steps up 3.7V to 5.2V.

Can you take a pic of your wiring my friend? Just so we can see how you are powering everything

josephchrzempiec

@monstermadeofman That might be a problem so much wiring you won't be able to see what is going where. There are 30 wires are more going form the game controllers to the raspberry pi and to the LCD and power it's so tangled up it's not even funny.

monstermadeofman

@josephchrzempiec

Christ man. Are you using a power strip to supply/distribute power to everyhting?

josephchrzempiec

@monstermadeofman LOL no man I just not got around to cleaning up the wires yes. That was the next thing to do. After getting it powered up and testing it.