Gameboy Mk3 - RPi3 + DPI screen + RTC diy [Completed!]

[razer.93]

Unfortunately I don't have a PT4110... Do you have some to sell? I built my own LED driver circuit with current limiter. I released the code on my github, about the schematic I'm just a bit lazy, poll me in private and I will give you as soon as possible if you need them

Not yet, this is why I asked you So far I was tinkering with the schematics from this thread/post which utilizes the FAN5333BSX... this LED driver is rather expensive and quite difficult to get...

Great post, I missed that!
I used the main components for the boost converter (diode, capacitor, indunctance, mosfet, resistors) and an ATtiny to drive the thing at a variable duty cycle. The schematic it's pretty standard, the code actually makes the difference

[jungb]

Hi guys!
Here I'm showing my second build based on a raspberry pi 3 and a DPI screen. I have already built a GBZero with a standard composite screen I have never been satisfied of, so while designing this mk3 (yes, it's just for the raspi3) a dpi screen was kinda a must-have feature.
With the idea of building all around the screen I had to sacrifice some feature from the previous version such as the GPIO buttons, I2C and serial.

Here's a list of feature I'd like to implement in this build:
- A powerful RPi3
- DPI 18bit (unless I figure out an alternative way to the graceful shutdown pin necessity)
- Arduino PRO micro keyboard/peripherals managment
- Still include RTC support via I2C
- Battery meter of course
- Adjustable backlight intensity via key shortcut (still problems on that)
- Fancy status led(s)
- ...
I would need help to figure out how to driver a boost-converter with a digital potentiometer since I burned two boost converters last night with a trivial trimmer->digital pot replacement
Any suggestion would be appreciated!

I have almost all the pieces I need, I'm just waiting for the LCD, the audio amp and the 3D-printed frame, this is the progress so far:

SpoilerShow

2017-12-05 22.27.25.jpg

I cut the case, flattened the rpi3 and setup the graceful shutdown mechanism, wired the pro micro to the keypad and to the rpi itself; figured out how manage the DPI and the serial communication.

SpoilerShow

2017-12-05 22.27.17.jpg

Updates as soon as the LCD and the boost converter replacement arrive!

[Completed!]
Here it is:
1.jpg

other picsShow

2.jpg
3.jpg
4.jpg
5.jpg

hdmi.jpg
Completed with adapded/modified OSD, key shortcuts and automatic/hot-plug HDMI clone script (automatically detects when cabe is inserted).

If someone is interested here it's the sketch I'm using on the ProMicro:
https://github.com/vascofazza/GameBoy-MK3-Build

If someone is interested I published a little guide for display mirroring here:
https://sudomod.com/forum/viewtopic.php?f=20&t=4912

If someone is interested I made and published the SUPER free OSD here:

https://sudomod.com/forum/viewtopic.php?f=20&t=4927

Thank you all for the support!test.pngtest1.png

Thx sharing
But github don't have osd binary and connect diagram
Can you sharing?
Thx

[razer.93]

Hi guys!
Here I'm showing my second build based on a raspberry pi 3 and a DPI screen. I have already built a GBZero with a standard composite screen I have never been satisfied of, so while designing this mk3 (yes, it's just for the raspi3) a dpi screen was kinda a must-have feature.
With the idea of building all around the screen I had to sacrifice some feature from the previous version such as the GPIO buttons, I2C and serial.

Here's a list of feature I'd like to implement in this build:
- A powerful RPi3
- DPI 18bit (unless I figure out an alternative way to the graceful shutdown pin necessity)
- Arduino PRO micro keyboard/peripherals managment
- Still include RTC support via I2C
- Battery meter of course
- Adjustable backlight intensity via key shortcut (still problems on that)
- Fancy status led(s)
- ...
I would need help to figure out how to driver a boost-converter with a digital potentiometer since I burned two boost converters last night with a trivial trimmer->digital pot replacement
Any suggestion would be appreciated!

I have almost all the pieces I need, I'm just waiting for the LCD, the audio amp and the 3D-printed frame, this is the progress so far:

SpoilerShow

2017-12-05 22.27.25.jpg

I cut the case, flattened the rpi3 and setup the graceful shutdown mechanism, wired the pro micro to the keypad and to the rpi itself; figured out how manage the DPI and the serial communication.

SpoilerShow

2017-12-05 22.27.17.jpg

Updates as soon as the LCD and the boost converter replacement arrive!

[Completed!]
Here it is:
1.jpg

other picsShow

2.jpg
3.jpg
4.jpg
5.jpg

hdmi.jpg
Completed with adapded/modified OSD, key shortcuts and automatic/hot-plug HDMI clone script (automatically detects when cabe is inserted).

If someone is interested here it's the sketch I'm using on the ProMicro:
https://github.com/vascofazza/GameBoy-MK3-Build

If someone is interested I published a little guide for display mirroring here:
https://sudomod.com/forum/viewtopic.php?f=20&t=4912

If someone is interested I made and published the SUPER free OSD here:

https://sudomod.com/forum/viewtopic.php?f=20&t=4927

Thank you all for the support!test.pngtest1.png

Thx sharing
But github don't have osd binary and connect diagram
Can you sharing?
Thx

The github repository contains the OSD sources, you can compile it by yourself.
For the connection diagram refer to the other standard guides on the forum, it's mainly standard I2C protocol

[jungb]

Hi guys!
Here I'm showing my second build based on a raspberry pi 3 and a DPI screen. I have already built a GBZero with a standard composite screen I have never been satisfied of, so while designing this mk3 (yes, it's just for the raspi3) a dpi screen was kinda a must-have feature.
With the idea of building all around the screen I had to sacrifice some feature from the previous version such as the GPIO buttons, I2C and serial.

Here's a list of feature I'd like to implement in this build:
- A powerful RPi3
- DPI 18bit (unless I figure out an alternative way to the graceful shutdown pin necessity)
- Arduino PRO micro keyboard/peripherals managment
- Still include RTC support via I2C
- Battery meter of course
- Adjustable backlight intensity via key shortcut (still problems on that)
- Fancy status led(s)
- ...
I would need help to figure out how to driver a boost-converter with a digital potentiometer since I burned two boost converters last night with a trivial trimmer->digital pot replacement
Any suggestion would be appreciated!

I have almost all the pieces I need, I'm just waiting for the LCD, the audio amp and the 3D-printed frame, this is the progress so far:

SpoilerShow

2017-12-05 22.27.25.jpg

I cut the case, flattened the rpi3 and setup the graceful shutdown mechanism, wired the pro micro to the keypad and to the rpi itself; figured out how manage the DPI and the serial communication.

SpoilerShow

2017-12-05 22.27.17.jpg

Updates as soon as the LCD and the boost converter replacement arrive!

[Completed!]
Here it is:
1.jpg

other picsShow

2.jpg
3.jpg
4.jpg
5.jpg

hdmi.jpg
Completed with adapded/modified OSD, key shortcuts and automatic/hot-plug HDMI clone script (automatically detects when cabe is inserted).

If someone is interested here it's the sketch I'm using on the ProMicro:
https://github.com/vascofazza/GameBoy-MK3-Build

If someone is interested I published a little guide for display mirroring here:
https://sudomod.com/forum/viewtopic.php?f=20&t=4912

If someone is interested I made and published the SUPER free OSD here:

https://sudomod.com/forum/viewtopic.php?f=20&t=4927

Thank you all for the support!test.pngtest1.png

Thx sharing
But github don't have osd binary and connect diagram
Can you sharing?
Thx

The github repository contains the OSD sources, you can compile it by yourself.
For the connection diagram refer to the other standard guides on the forum, it's mainly standard I2C protocol

Friend
Thx reply
Gitub source lib documents doe have any file and i can't find osd source
Yiu can check it
Thx