Collecting information on alternative displays - please contribute

General GBZ-related chat goes here. Share ideas, tips and tricks, or ask questions that don't fit into the hardware/software help forums.
Treguard
Posts: 128
Joined: Thu Jul 28, 2016 5:29 am
Has thanked: 40 times
Been thanked: 6 times

Re: Collecting information on alternative displays - please contribute

Post by Treguard » Mon Sep 12, 2016 3:19 am

DarrylUK wrote:
Treguard wrote:
DarrylUK wrote:
Did you try this? I have v7 and have phasing, wondered if you successfully modded it.
The voltage regulator on mine is in the same place as the one in RxBrad post on page 34. I stupidly looked at the wrong photo at first...just as well i didnt solder to that other chip!

I promise it honestly was an absolute b@tch to solder. The red power wire kept on coming away when the other wire to the VR stayed down.
After grtting it on, use plenty of hotglue to keep it in place (and let it dry).
I've also connected the +5v to pin 2 and ground to pin 6 on the gpio header since i need the test pads for my usb hub.

Phasing has now gone after a quick 5 minute test, but i havent been able to do a stress test with it yet.
Are you able to post a picture?
Hi, sorry for the delay in replying. Unofrtunately I didn't take photos before applying the hot glue:-

Image

Image

Image

User avatar
Fleder
Posts: 849
Joined: Thu May 05, 2016 9:04 am
Location: Germany
Has thanked: 183 times
Been thanked: 258 times

Re: Collecting information on alternative displays - please contribute

Post by Fleder » Mon Sep 12, 2016 4:49 am

Treguard wrote:Hi, sorry for the delay in replying. Unofrtunately I didn't take photos before applying the hot glue:-
Image
This is wrong. You are soldering your second video input to GND.
White & Yellow are Video Inputs. GND is only Black.

Treguard
Posts: 128
Joined: Thu Jul 28, 2016 5:29 am
Has thanked: 40 times
Been thanked: 6 times

Re: Collecting information on alternative displays - please contribute

Post by Treguard » Mon Sep 12, 2016 5:07 am

Fleder wrote:
Treguard wrote:Hi, sorry for the delay in replying. Unofrtunately I didn't take photos before applying the hot glue:-
Image
This is wrong. You are soldering your second video input to GND.
White & Yellow are Video Inputs. GND is only Black.
Hi, thanks for the reply. Apologies for the dark photo, Ground is soldered to Pin 6 on the GPIO :)

Edit:- Sorry I see what you're saying. It matches this though?

Image

KaiKona808
Posts: 51
Joined: Sat Aug 06, 2016 6:30 am
Has thanked: 20 times
Been thanked: 14 times

Re: Collecting information on alternative displays - please contribute

Post by KaiKona808 » Mon Sep 12, 2016 7:28 am

Treguard wrote:
Fleder wrote:
Treguard wrote:Hi, sorry for the delay in replying. Unofrtunately I didn't take photos before applying the hot glue:-
Image
This is wrong. You are soldering your second video input to GND.
White & Yellow are Video Inputs. GND is only Black.
Hi, thanks for the reply. Apologies for the dark photo, Ground is soldered to Pin 6 on the GPIO :)

Edit:- Sorry I see what you're saying. It matches this though?

Image
I think what @fleder is advising is based off of his post below:

How to wire lcd

The white and yellow wires are actually AV source 1 and AV source 2. Though the wiring you followed works it is more accurately wired as he listed. Also in the thread it was advised the reason to put the ground wire at the ground source on the Pi next to either the yellow or white audio source wire is the closer the ground is to the signal the better it is at reducing noise.

Treguard
Posts: 128
Joined: Thu Jul 28, 2016 5:29 am
Has thanked: 40 times
Been thanked: 6 times

Re: Collecting information on alternative displays - please contribute

Post by Treguard » Mon Sep 12, 2016 9:57 am

Fleder wrote:
Treguard wrote:Hi, sorry for the delay in replying. Unofrtunately I didn't take photos before applying the hot glue:-
Image
This is wrong. You are soldering your second video input to GND.
White & Yellow are Video Inputs. GND is only Black.

KaiKona808 wrote:
Treguard wrote:I think what @Fleder is advising is based off of his post below:

How to wire lcd

The white and yellow wires are actually AV source 1 and AV source 2. Though the wiring you followed works it is more accurately wired as he listed. Also in the thread it was advised the reason to put the ground wire at the ground source on the Pi next to either the yellow or white audio source wire is the closer the ground is to the signal the better it is at reducing noise.
Just had a look at the guide, and have to say that might be the reason why my SD Card died. I wasn't sure if it was a fake or not. Basically it started with the ROM folder being deleted, then windows would want to format the card, then it reported 58mb for a 32gb card. Thanks for the advice :)

DarrylUK
Posts: 62
Joined: Thu Jul 21, 2016 2:09 pm
Has thanked: 14 times
Been thanked: 20 times

Re: Collecting information on alternative displays - please contribute

Post by DarrylUK » Mon Sep 12, 2016 10:17 am

Yeah, I did the mod and it's much improved:

Image

I used blue because it's what I had on the desk in front of me.

TimBer
Posts: 38
Joined: Tue Sep 13, 2016 1:42 am
Has thanked: 4 times
Been thanked: 11 times

Re: Collecting information on alternative displays - please contribute

Post by TimBer » Wed Sep 14, 2016 4:25 am

I think I have version 8 of the BW screen, but not sure if this controller board was already listed in this post (only scanned the last pages)

Using it out of the box with 5V does not work.

This board is also using an 1117 regulator.
Just rewire the input voltage to Vo of the 1117 regulator and the screen works great! :D

screen_5v_low.jpg
screen_5v_low.jpg (77.41 KiB) Viewed 10455 times

Pumpytums
Posts: 24
Joined: Wed Sep 14, 2016 8:55 am
Has thanked: 3 times
Been thanked: 6 times

Re: Collecting information on alternative displays - please contribute

Post by Pumpytums » Wed Sep 14, 2016 9:21 am

Hi Everyone,
I ordered a BW 3.5" display yesterday from Amazon Prime (UK) I can confirm that this is the V7 version as shown here

http://sudomod.com/wiki/index.php?title ... _Board.jpg

https://www.amazon.co.uk/gp/product/B00 ... UTF8&psc=1

I made sure the order was supplied BW Corp and fulfilled by Amazon. I haven't tried it yet just took the back off to check. The screen just pushed out so really I'm happy.

Thanks

Pumpytums
Posts: 24
Joined: Wed Sep 14, 2016 8:55 am
Has thanked: 3 times
Been thanked: 6 times

Re: Collecting information on alternative displays - please contribute

Post by Pumpytums » Wed Sep 14, 2016 1:59 pm

Hi,
Just connected it up and it worked fine. There was a slight amount of phasing so I did the bypass mod now it's acting very oddly, the raspberry pi logo is bluey purple.

I assumed I had damaged the board so I snipped the wire and rebooted back to normal. I then touched the bypass wire to the 5v in an the display got better. I crimped it to the 5v and rebooted again bluey tint again.

Anyone else had this issue?

User avatar
Fleder
Posts: 849
Joined: Thu May 05, 2016 9:04 am
Location: Germany
Has thanked: 183 times
Been thanked: 258 times

Re: Collecting information on alternative displays - please contribute

Post by Fleder » Thu Sep 15, 2016 1:22 am

Pumpytums wrote:Hi,
Just connected it up and it worked fine. There was a slight amount of phasing so I did the bypass mod now it's acting very oddly, the raspberry pi logo is bluey purple.

I assumed I had damaged the board so I snipped the wire and rebooted back to normal. I then touched the bypass wire to the 5v in an the display got better. I crimped it to the 5v and rebooted again bluey tint again.

Anyone else had this issue?
So, to be clear, the only difference was, that one time, you just hold the wire onto the leg and on the other occasion, you soldered it onto it?
If so, make sure you did not bridge anything else accidently.

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest