Search found 55 matches

by floppes
Fri Oct 15, 2021 2:03 pm
Forum: Support (Game Boy Zero)
Topic: GBZ PWM Audio Filter Frustrations!
Replies: 1
Views: 1303

Re: GBZ PWM Audio Filter Frustrations!

Digital logic creates noise on the power supply rail. Take a look at the schematic of the Raspberry Pi 3 and you will see that they have a separate 3.3 V power supply for audio (3V3A) from their PMIC (MxL7704). They use an NC7WZ16 buffer to decouple the audio signal: Pi audio.png You can use an NC7W...
by floppes
Sun Oct 03, 2021 1:14 pm
Forum: General Chat (Game Boy Zero)
Topic: 3.5" 640x480 DPI screen
Replies: 7
Views: 6417

Re: 3.5" 640x480 DPI screen

On the board you can see an AMS1117 voltage regulator, an STM8S003F3 microcontroller (probably for initializing the display) and a Goodix touch screen controller on the orange/brown flat flex cable. The small coil probably belongs to another power supply. Therefore you will need most of the componen...
by floppes
Sun Oct 03, 2021 3:39 am
Forum: General Chat (Game Boy Zero)
Topic: 3.5" 640x480 DPI screen
Replies: 7
Views: 6417

Re: 3.5" 640x480 DPI screen

This really looks like a perfect match! About 2.5 years ago I was searching for a fitting 3.5" display with a resolution of more than 320x280 to fit inside the Game Boy shell. I found quite a few, but all were a few millimeters too wide for the shell. The display you found fits easily! And it has an...
by floppes
Thu Dec 31, 2020 10:54 am
Forum: Raspberry Pi
Topic: pi 3a+ power consumption?
Replies: 2
Views: 4446

Re: pi 3a+ power consumption?

2 A is enough for the Pi 3 A+. Mabye your cable is of poor quality and drops some voltage. Try another one ;)
by floppes
Thu Sep 10, 2020 1:29 pm
Forum: Software Help
Topic: Turning OFF save states?? Metroid insanity
Replies: 1
Views: 6008

Re: Turning OFF save states?? Metroid insanity

I can't help you with the access permission but for the next time you accidentally load/save a state: You can open the RGUI menu and there is an option to undo the load/save.

I sometimes mix up load and save and then this menu is really helpful :)
by floppes
Sat Aug 29, 2020 6:15 am
Forum: Raspberry Pi
Topic: USB work Raspberry Pi 3 B+
Replies: 1
Views: 5063

Re: USB work Raspberry Pi 3 B+

What is "the micro usb socket of the display"? Pictures would help ;) Did you connect only the two data pins (D+ and D-) or 5 V and GND as well? USB can be sensitive to surrounding signals. That's why it uses a differential signal. Twist the data wires for a better signal. A Raspberry Pi 3 A+ is a b...
by floppes
Tue Mar 17, 2020 6:53 am
Forum: General Chat (Game Boy Zero)
Topic: Diagonal screen tearing
Replies: 9
Views: 7620

Re: Diagonal screen tearing

I can confirm screen tearing with some KeDei HDMI screens. The problem is not the HDMI interface but the display controller which isn't driving the LCD correctly. DPI ist the best solution to avoid screen tearing. My daddelkischde 2 board features a 480x320 DPI screen and is on pre-sale right now at...
by floppes
Fri Feb 07, 2020 5:07 am
Forum: Site/Forum Feedback
Topic: "New posts" display error
Replies: 0
Views: 8974

"New posts" display error

On a 2560x1440 screen with Windows 10 and Firefox the "New posts" page shows the "Replies" and "Views" text stacked and off to the left of the screen (highlighted with a red rectangle):
forum.png
forum.png (100.63 KiB) Viewed 8974 times
On a full HD 1920x1080 this does not happen. I guess the text is just outside the visible bounds.
by floppes
Wed Jan 29, 2020 4:40 am
Forum: Support (VMµ)
Topic: Save states [solved]
Replies: 4
Views: 6432

Re: Save states

I don't know much about the VMU, but it seems that you are using RetroPie on it and "sleep" is configured as your hotkey. To load a saved state you need to press "sleep" plus the button you configured as "left shoulder". Saving is "sleep" plus "right shoulder".
by floppes
Thu Nov 28, 2019 10:27 am
Forum: Support (Game Boy Zero)
Topic: Looking for advice on my 1st Gameboy 3b+ build.
Replies: 4
Views: 2590

Re: Looking for advice on my 1st Gameboy 3b+ build.

All right, no worries ;) I noticed just a little cosmetic error in your setup: The blue wire going to L_IN on the right board should go to L_OUT and the yellowish wire should go to L_IN instead of L_OUT. One end of each wire should be IN, the other end should be OUT. But it probably won't make any f...