[WANTED] Raspberry Pi (any model), DMG-01 Start/Select buttons & Batteries

[joe7dust]

Looking to build a handheld emulator.

[Fleder]

I finally got all the major parts ordered to create a RetroPie player inside a GBA SP shell. I believe the only thing I need still for sure are the switches themselves. I might also need a pot, but if there is a way to just set a fixed volume and then not have to worry about wiring up volume adjustment then I might just leave it at a fixed volume.

I'm hoping that someone here has spare switches laying around and could do US shipping to arrive by the 13th to 15th.

I am from germany, so shipping would tage ages. But look in this forum, there are a lot of suers that sell spare parts.
Also, just use a USB DAC with a volume button, if you want to set and forget the volume.

[joe7dust]

I finally got all the major parts ordered to create a RetroPie player inside a GBA SP shell. I believe the only thing I need still for sure are the switches themselves. I might also need a pot, but if there is a way to just set a fixed volume and then not have to worry about wiring up volume adjustment then I might just leave it at a fixed volume.

I'm hoping that someone here has spare switches laying around and could do US shipping to arrive by the 13th to 15th.

I am from germany, so shipping would tage ages. But look in this forum, there are a lot of suers that sell spare parts.
Also, just use a USB DAC with a volume button, if you want to set and forget the volume.

OK will do thank you.

Regarding the USB DAC I got a similar response on the rpi irc. Basically it sounds like unless I want to buy a bunch of components and wire up THIS then my best bet is going to be using a USB DAC. That is unfortunate because I was hoping that simply the audio amp board and speaker would be enough, but hopefully I can find a USB DAC for less than $5 after shipping and still have a couple bucks left for the switches.

edit: I just realized.. I probably don't even need the amp board now right, wouldn't that all be built into the USB DAC such that just hooking up a speaker to the USB DAC is enough?

[Fleder]

OK will do thank you.

Regarding the USB DAC I got a similar response on the rpi irc. Basically it sounds like unless I want to buy a bunch of components and wire up THIS then my best bet is going to be using a USB DAC. That is unfortunate because I was hoping that simply the audio amp board and speaker would be enough, but hopefully I can find a USB DAC for less than after shipping and still have a couple bucks left for the switches.

edit: I just realized.. I probably don't even need the amp board now right, wouldn't that all be built into the USB DAC such that just hooking up a speaker to the USB DAC is enough?

No, if you use a USB DAC, you do not need the amplifier.
https://www.amazon.com/Sabrent-External ... +soundcard
Something like this would do, but i am not sure if this particular product will work with the Pi.
But others here on the forums used a similar one, i think.

The switches are a few cents. And if you can't invest 2 dollars more, than this project might not be for you.
Those won't be the last investments you will ahve to make, probably. This is no cheap project.

[joe7dust]

OK will do thank you.

Regarding the USB DAC I got a similar response on the rpi irc. Basically it sounds like unless I want to buy a bunch of components and wire up THIS then my best bet is going to be using a USB DAC. That is unfortunate because I was hoping that simply the audio amp board and speaker would be enough, but hopefully I can find a USB DAC for less than after shipping and still have a couple bucks left for the switches.

edit: I just realized.. I probably don't even need the amp board now right, wouldn't that all be built into the USB DAC such that just hooking up a speaker to the USB DAC is enough?

No, if you use a USB DAC, you do not need the amplifier.
https://www.amazon.com/Sabrent-External ... +soundcard
Something like this would do, but i am not sure if this particular product will work with the Pi.
But others here on the forums used a similar one, i think.

The switches are a few cents. And if you can't invest 2 dollars more, than this project might not be for you.
Those won't be the last investments you will ahve to make, probably. This is no cheap project.

Great, thanks for that info. Would you mind taking a look at this post? http://www.sudomod.com/forum/viewtopic. ... 5459#p5459

[joe7dust]

I still haven't ordered these switches. Looking like I won't use a pot at all in my build and will just have a fixed volume output.

Here's what I still need: (shippable to TX, USA)

- Pack of switches to interface between the GBA SP buttons and the GPIO on the RPi0
- Pack of switches for GBZ build in a DMG-01 shell OR GBZ Controller Board (@Helder's latest design preferred)
- 2x 2000+ mAh batteries
- Components for 2x PWM mono audio circuits (2x 270R, 2x 150R, 2x 33N & 2x 10U)
- DMG-01 Shell w/ Buttons included
- LCD Display for the GBZ build that will fit in a DMG-01
- MicroSD card
- Raspberry Pi (any model)
- Solder Wick (aka dewick)

[Kilren]

No, if you use a USB DAC, you do not need the amplifier.
https://www.amazon.com/Sabrent-External ... +soundcard

I had bad luck not using an amp. I had to use an amp even with the USB dac. Fleder, did you have success using the usb audio without an amp?

This is no cheap project.

Agreed! You better be willing to spend a minimum of $120 without blinking an eye. Realistically, it is somewhere between +$150-200.

A lot of the parts you listed, amazon and ebay is your best friend.
Parts List

[joe7dust]

No, if you use a USB DAC, you do not need the amplifier.
https://www.amazon.com/Sabrent-External ... +soundcard

I had bad luck not using an amp. I had to use an amp even with the USB dac. Fleder, did you have success using the usb audio without an amp?

This is no cheap project.

Agreed! You better be willing to spend a minimum of $120 without blinking an eye. Realistically, it is somewhere between +$150-200.

A lot of the parts you listed, amazon and ebay is your best friend.

I think I'll get away with spending less than $120. I wouldn't mind spending that if I had too, but it doesn't look necessary at this time.

BTW @Kilren, @Helder's new GBZ controller board actually has the amp already built in so hopefully I am able to snag one of those.

@Kilren Your link is broken.

[Kilren]

I think I'll get away with spending less than $120.

Good luck. This is not a cheap project.

My link seems fine.

[joe7dust]

I think I'll get away with spending less than $120.

Good luck. This is not a cheap project.

My link seems fine.

It's working now.

About the price you will see. I don't mind getting my s later on. Mine won't have the benefit of the overpriced adafruit powerboard like play while charge and prevent sdcard corruption on low battery, but everything else the clones seem to be just as good as the premium products.