Help with BW screens and RPi0

General GBZ-related chat goes here. Share ideas, tips and tricks, or ask questions that don't fit into the hardware/software help forums.
onesojourner
Posts: 101
Joined: Tue Dec 13, 2016 10:23 am
Has thanked: 21 times
Been thanked: 12 times

Re: Help with BW screens and RPi0

Post by onesojourner » Wed Apr 26, 2017 8:41 am

Can one of you guys explain why we need the second ground, I guess you are calling it the composite ground? I have this same board and I do not have the second ground hooked up. The screen is working but there is a lot of static and flickering. This is how I currently have it wired up. I have 3 other screens that remain black though.

Image

User avatar
dbak85
Posts: 40
Joined: Thu Mar 09, 2017 2:04 am
Has thanked: 14 times
Been thanked: 19 times

Re: Help with BW screens and RPi0

Post by dbak85 » Wed Apr 26, 2017 5:29 pm

Well the driver board needs ground but the pi also needs ground on the composite. The cable that comes with the screen already ties the grounds together. If you are using your own solution like i did, you have to account for this and use 2 grounds

onesojourner
Posts: 101
Joined: Tue Dec 13, 2016 10:23 am
Has thanked: 21 times
Been thanked: 12 times

Re: Help with BW screens and RPi0

Post by onesojourner » Thu Apr 27, 2017 1:30 pm

dbak85 wrote:
Wed Apr 26, 2017 5:29 pm
Well the driver board needs ground but the pi also needs ground on the composite. The cable that comes with the screen already ties the grounds together. If you are using your own solution like i did, you have to account for this and use 2 grounds

Alright using a composite cable I was able to get 2 of my 3 screens working. I have only tried wiring things up like the image from the wiki. I will try your solution tonight.

User avatar
dbak85
Posts: 40
Joined: Thu Mar 09, 2017 2:04 am
Has thanked: 14 times
Been thanked: 19 times

Re: Help with BW screens and RPi0

Post by dbak85 » Fri Apr 28, 2017 5:24 am

onesojourner wrote:
Thu Apr 27, 2017 1:30 pm
Alright using a composite cable I was able to get 2 of my 3 screens working. I have only tried wiring things up like the image from the wiki. I will try your solution tonight.
My solution seems to make the screen run pretty hot. Does this board get very hot with the other technique in the wiki?

onesojourner
Posts: 101
Joined: Tue Dec 13, 2016 10:23 am
Has thanked: 21 times
Been thanked: 12 times

Re: Help with BW screens and RPi0

Post by onesojourner » Fri Apr 28, 2017 7:01 am

dbak85 wrote:
Fri Apr 28, 2017 5:24 am
onesojourner wrote:
Thu Apr 27, 2017 1:30 pm
Alright using a composite cable I was able to get 2 of my 3 screens working. I have only tried wiring things up like the image from the wiki. I will try your solution tonight.
My solution seems to make the screen run pretty hot. Does this board get very hot with the other technique in the wiki?
So far mine are only slightly warm. I have only ran them for about 5 minutes at a time though.

User avatar
tinkerBOY
Posts: 709
Joined: Tue May 30, 2017 4:00 am
Has thanked: 294 times
Been thanked: 205 times

Re: Help with BW screens and RPi0

Post by tinkerBOY » Sun Jul 09, 2017 12:01 am

dbak85 wrote:
Fri Apr 28, 2017 5:24 am
onesojourner wrote:
Thu Apr 27, 2017 1:30 pm
Alright using a composite cable I was able to get 2 of my 3 screens working. I have only tried wiring things up like the image from the wiki. I will try your solution tonight.
My solution seems to make the screen run pretty hot. Does this board get very hot with the other technique in the wiki?
Can you post a picture of the board? Mine gets hot too. I have the same BW screen as this one http://www.sudomod.com/forum/viewtopic. ... =30#p30926
New! tinkerBOY PowerSwitch v1.0 with Safe Shutdown
Game Boy Zero Controllers available @ tinkerBOY.xyz * Support
tinkerBOY Controller v3.0 - built-in usb controller, usb audio, and usb hub
tinkerBOY Controller v2.0 - GPIO buttons and builtin PWM Audio and Amplifier
tinkerBOY Controller v1.1 - simple pcb button
* DPI Adapter - better display for GBZ
* keyboard converters - IBM XT/AT Soarer's Converter | ADB to USB Converter

User avatar
tinkerBOY
Posts: 709
Joined: Tue May 30, 2017 4:00 am
Has thanked: 294 times
Been thanked: 205 times

Re: Help with BW screens and RPi0

Post by tinkerBOY » Sun Jul 09, 2017 12:01 am

dbak85 wrote:
Fri Apr 28, 2017 5:24 am
onesojourner wrote:
Thu Apr 27, 2017 1:30 pm
Alright using a composite cable I was able to get 2 of my 3 screens working. I have only tried wiring things up like the image from the wiki. I will try your solution tonight.
My solution seems to make the screen run pretty hot. Does this board get very hot with the other technique in the wiki?
Can you post a picture of the board? Mine gets hot too. I have the same BW screen as this one http://www.sudomod.com/forum/viewtopic. ... =30#p30926
New! tinkerBOY PowerSwitch v1.0 with Safe Shutdown
Game Boy Zero Controllers available @ tinkerBOY.xyz * Support
tinkerBOY Controller v3.0 - built-in usb controller, usb audio, and usb hub
tinkerBOY Controller v2.0 - GPIO buttons and builtin PWM Audio and Amplifier
tinkerBOY Controller v1.1 - simple pcb button
* DPI Adapter - better display for GBZ
* keyboard converters - IBM XT/AT Soarer's Converter | ADB to USB Converter

User avatar
dbak85
Posts: 40
Joined: Thu Mar 09, 2017 2:04 am
Has thanked: 14 times
Been thanked: 19 times

Re: Help with BW screens and RPi0

Post by dbak85 » Sun Jul 09, 2017 10:49 am

zeroboy wrote:
Sun Jul 09, 2017 12:01 am

Can you post a picture of the board? Mine gets hot too. I have the same BW screen as this one http://www.sudomod.com/forum/viewtopic. ... =30#p30926
unfortunately I damaged that board (broke the ribbon cable) and got another one that works straight off 5v.

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest