Dreamcast VMU Pi [Completed]

Show off your completed VMµ, or post your build logs here!
User avatar
Mirk
Posts: 4
Joined: Wed Jul 19, 2017 8:07 am
Has thanked: 2 times
Been thanked: 1 time

Re: Dreamcast VMU Pi

Post by Mirk » Thu Jul 20, 2017 5:26 pm

Hello all! I now have everything I need to build this. Its been a dream since 99 to have a gameboy inside a vmu. I first tried to do this a year ago by cramming a watch phone inside but I could never get the controls to work. I then saw your youtube vid satri360 and have since been buying what is needed. My problem is I am kinda of a noob at this. Mostly software related. So any help with the code that is needed to get this working would be amazing. I think I have the video figured out but for sound I have no clue. My soldering skills are also not the best. Been practicing your guide abrugsch.

I found this https://www.youtube.com/watch?v=WpAbeKMVBFE and on their twitter these pics. Really wish I new what screen was used.
Untitled-2.jpg
Untitled-2.jpg (140.42 KiB) Viewed 3476 times
Untitled-3.jpg
Untitled-3.jpg (157.45 KiB) Viewed 3476 times
So I bought the sound card from these pics. I have no clue how to do the software but the wiring looks easy enough.

On this
vmu_pcb_pad_ic1_soldered.png
vmu_pcb_pad_ic1_soldered.png (476.69 KiB) Viewed 3476 times
How did you solder this without it spilling over? can I use something as like dividers? Its so damn small. :shock:

And here
vmu_oled_pcb_cut.png
vmu_oled_pcb_cut.png (520.53 KiB) Viewed 3476 times
Is what I have circled what you mean?

I plan on cutting up and solder some vmus this weekend to try and get the controls done. I have 12 to work with so here's hoping I can do it in 12 tries. :lol:

User avatar
abrugsch
Posts: 971
Joined: Tue Aug 02, 2016 10:00 am
Has thanked: 356 times
Been thanked: 430 times
Contact:

Re: Dreamcast VMU Pi

Post by abrugsch » Fri Jul 21, 2017 12:23 am

Mirk wrote:
Thu Jul 20, 2017 5:26 pm
How did you solder this without it spilling over? can I use something as like dividers? Its so damn small. :shock:
Lots of flux, fine wires and a fine soldering tip...
You can also use the vias (the small holes in the pcb linking traces from one side to the other)
Last edited by abrugsch on Fri Jul 21, 2017 5:07 am, edited 1 time in total.

User avatar
moosepr
Posts: 523
Joined: Wed Jan 25, 2017 6:18 am
Has thanked: 69 times
Been thanked: 241 times
Contact:

Re: Dreamcast VMU Pi

Post by moosepr » Fri Jul 21, 2017 1:57 am

if this is your first project you really are jumping in at the deep end!!!!

The screen is actually an adafruit one https://www.adafruit.com/product/1431 the yellow box is showing how much of the pcb he left remaining, and the red dots show some of the places he attached wires
Get a small cheep LCD in your project https://www.sudomod.com/forum/viewtopic.php?f=22&t=2312
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919

User avatar
Mirk
Posts: 4
Joined: Wed Jul 19, 2017 8:07 am
Has thanked: 2 times
Been thanked: 1 time

Re: Dreamcast VMU Pi

Post by Mirk » Fri Jul 21, 2017 4:38 am

While not my first project it is definitely the smallest. I did pick up that lcd to follow satri360 guide but pomegd got back to me and link me the screen he used.
http://www.aitendo.com/product/11455
Its a 1.8 screen with 128x160 rez so I assume in software he change the rotation and position of the display. I plan on using the oled on the first build. For the controls I am going to attempt to solder a few vmu boards using the teeny tiny contacts but if that fails just go for the pads themselves. If time allows this weekend I'll post my progress. Thanks guys!

User avatar
Mirk
Posts: 4
Joined: Wed Jul 19, 2017 8:07 am
Has thanked: 2 times
Been thanked: 1 time

Re: Dreamcast VMU Pi

Post by Mirk » Fri Jul 21, 2017 4:56 pm

I have been giving this a bit of a go tonight and I have hit a few snags. I have trimmed down everything I could and making sure everything will fit. That inductor on the powerboost 500 is indeed to tall. I can not find a way to make it fit. I have tried searching google for a low profile replacement and I am having no luck. The 2 I have found that I think will work the mim order is 2500+. Could one of you fine gents point me in the right direction on where I might find one or a different power charge that would fit better would be great too! :D

User avatar
abrugsch
Posts: 971
Joined: Tue Aug 02, 2016 10:00 am
Has thanked: 356 times
Been thanked: 430 times
Contact:

Re: Dreamcast VMU Pi

Post by abrugsch » Sat Jul 22, 2017 1:15 am

What value/size is the inductor? I found a low profile wurth one on RS to replace the tall one on my small powerboost equivalent...
See here: http://www.sudomod.com/forum/viewtopic. ... tor#p33614

User avatar
moosepr
Posts: 523
Joined: Wed Jan 25, 2017 6:18 am
Has thanked: 69 times
Been thanked: 241 times
Contact:

Re: Dreamcast VMU Pi

Post by moosepr » Sat Jul 22, 2017 2:17 am

Alternatively have a look at my projects. None have power boosts in them. The pi will happily run as low as 3v, so as long as you protect the battery from being over discharged you will be ok. Charging is also a consideration. The charge/protect boards I use are pretty small, or you could just buy a protected cell, and add an extra connector for charging purposes
Get a small cheep LCD in your project https://www.sudomod.com/forum/viewtopic.php?f=22&t=2312
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919

User avatar
obsidianspider
Posts: 98
Joined: Tue Sep 06, 2016 11:01 am
Has thanked: 134 times
Been thanked: 35 times

Re: Dreamcast VMU Pi

Post by obsidianspider » Sun Jul 23, 2017 2:47 pm

I managed to sandwich things in with a cheap charge/protect board, but it's not boosting up to 5V. That said, the cheap 128x128 screen I'm using doesn't need it.

User avatar
Mirk
Posts: 4
Joined: Wed Jul 19, 2017 8:07 am
Has thanked: 2 times
Been thanked: 1 time

Re: Dreamcast VMU Pi

Post by Mirk » Mon Jul 24, 2017 2:22 pm

I haven't got much done since I am waiting on a few thing to come in. I think I can make it all fit if I remove the hdmi and mini usb connectors on the pi. I have 4 to use so I can set up the software on another.

satri360
Posts: 43
Joined: Wed Mar 22, 2017 12:59 am
Has thanked: 9 times
Been thanked: 54 times

Re: Dreamcast VMU Pi

Post by satri360 » Tue Sep 05, 2017 8:19 am

Mirk wrote:
Thu Jul 20, 2017 5:26 pm
I found this https://www.youtube.com/watch?v=WpAbeKMVBFE and on their twitter these pics. Really wish I new what screen was used.

So I bought the sound card from these pics. I have no clue how to do the software but the wiring looks easy enough.
I am not sure what he is using but assume one of the 1.44" 128x128 ILI9163 just based on the white stiffener of the LCD.

You can follow the complete instruction from the Adafruit to enable the I2S Audio.
https://learn.adafruit.com/adafruit-max ... y-pi-usage
Mirk wrote:
Thu Jul 20, 2017 5:26 pm
On this
vmu_pcb_pad_ic1_soldered.png
How did you solder this without it spilling over? can I use something as like dividers? Its so damn small. :shock:
I use flux, decent solder iron tips and the Nikon SMZ - stereo microscope. This helps a lot when you solder narrow pitch components like 0.5mm. We might not need this for wiring the VMU I/Os but definitely good for the OLED board. It could a bit pricy to get the best quality of image but an affordable one would be still sufficient for home soldering :).
Stereomicroscope.jpeg
Stereomicroscope.jpeg (3.63 KiB) Viewed 3154 times
Mirk wrote:
Thu Jul 20, 2017 5:26 pm
And here
vmu_oled_pcb_cut.png
Is what I have circled what you mean?
These spots are marked to attract some attentions when they cut the PCB.
Middle - GND via connecting top and bottom layer. Don't lose it or you have to wire them like I did. Yeah I busted and took me an hour to fix.
Right - VSL (segment voltage reference) via.
Untitled.png
Untitled.png (31.05 KiB) Viewed 3154 times

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest