Search found 36 matches

by floppes
Thu May 23, 2019 5:23 am
Forum: Support (Game Boy Zero)
Topic: Connecting shoulder buttons to ground - where? [SOLVED]
Replies: 5
Views: 395

Re: Connecting shoulder buttons to ground - where?

Generally speaking, you should have all GNDs connected. The GND of the Raspberry Pi should be connected with the GND of your PCB and the GNDs of your shoulder buttons. That's called a "common ground". How you do this is up to you.
by floppes
Tue May 21, 2019 9:20 am
Forum: General Project Chat
Topic: New RetroStone SBC gaming handheld
Replies: 4
Views: 804

Re: New RetroStone SBC gaming handheld

I was under the impression this chip didn't support DPI/RBG but one of the pictures clearly states "AV->RGB24". I guess I've been mistaken? The Kickstarter campaign of the original RetroStone has the same picture with "AV->RGB24". I think the only difference is the aluminium case and the lack of th...
by floppes
Tue Apr 02, 2019 1:35 pm
Forum: General Hardware
Topic: Change 3.5" HDMI display boot logo
Replies: 40
Views: 10548

Re: Change 3.5" HDMI display boot logo

I have updated the project to v2.0 and added a Python script. This script allows you to read and write the firmware from a Raspberry Pi through a regular HDMI cable. No modified cable needed. You just need to enable the second I2C interface on the Pi, the GitHub page explains how this is done. With ...
by floppes
Wed Mar 20, 2019 3:19 pm
Forum: Support (Game Boy Zero)
Topic: KeDei HDMI screen feels sluggish
Replies: 11
Views: 1201

Re: KeDei HDMI screen feels sluggish

From my experience, you can't rely on the KeDei displays any more. They have changed the panel a few times but kept the same date on the PCB. The latest KeDei display I got had a screen which wouldn't fit in the shell because it is about 1 mm too wide. And another downside: the response time is very...
by floppes
Tue Jan 29, 2019 11:34 pm
Forum: Interest Gauging
Topic: daddelkischde AIO
Replies: 4
Views: 2771

Re: daddelkischde AIO

You can buy one here: https://www.zeroboy.eu/shop/aio-daddelk ... b/?lang=en
There are only few left, the next batch will arive in about 6 weeks.
by floppes
Sat Dec 08, 2018 8:40 am
Forum: General Hardware
Topic: Change 3.5" HDMI display boot logo
Replies: 40
Views: 10548

Re: Change 3.5" HDMI display boot logo

I have just released a new version of both the Arduino code and the GUI tool. Both need to be updated. I have added checksums to the telegrams to make the communication more reliable. The connection problems should be solved as well. Sometimes the first few bytes from the Arduino don't reach the PC....
by floppes
Sun Dec 02, 2018 3:28 am
Forum: General Hardware
Topic: Change 3.5" HDMI display boot logo
Replies: 40
Views: 10548

Re: Change 3.5" HDMI display boot logo

Marty33, good to see it working. I will update the software to use 9600 baud. 115200 seems to cause problems for some users. About the unknown firmware: The GUI tool "knows" only a few firmware variants. This is a precaution not to modify every firmware and corrupting it. You can send me the file fi...
by floppes
Fri Nov 09, 2018 2:09 am
Forum: General Hardware
Topic: Change 3.5" HDMI display boot logo
Replies: 40
Views: 10548

Re: Change 3.5" HDMI display boot logo

Someone else had similar problems and for him it helped to press the reset button on the Arduino before clicking "Connect". If you have not given up yet, you can try the following steps: - Connect the Arduino to your PC (don't connect the display to the Arduino) - Start the GUI tool, configure the c...
by floppes
Tue Nov 06, 2018 7:08 am
Forum: General Hardware
Topic: Change 3.5" HDMI display boot logo
Replies: 40
Views: 10548

Re: Change 3.5" HDMI display boot logo

On GitHub two people had similar issues and they solved it by reducing the baud rate to 9600. To do so, change the line

Code: Select all

Serial.begin(115200);
in the Arduino code to

Code: Select all

Serial.begin(9600);
In the GUI tool, the baud rate is set next to the COM port. I hope this helps...
by floppes
Tue Nov 06, 2018 2:39 am
Forum: Interest Gauging
Topic: daddelkischde AIO
Replies: 4
Views: 2771

Re: daddelkischde AIO

The daddelkischde pre-sale has started a few days ago! We are cooperating with ZeroBOY where you can pre-order a set and additional components such as the assembly helpers. We have also launched the official website www.daddelkischde.de The pre-sale will last for one more week and then we start prod...