Hello all! A friend is making a small computer for surfing, and asked me to look over his schematic. However, it's been so long since my electronics training (which I never really used) that I don't feel comfortable weighing in on it, so here I am! Hoping for a kind soul or two to look this thing over and give me any advice. Thanks!

 

How will you get 5V 2A from soundcard?
Besides that, In theory, it could work... but also in theory, communism is a great idea, until human greed screws it up..

 

How will you get 5V 2A from soundcard?
Besides that, In theory, it could work... but also in theory, communism is a great idea, until human greed screws it up..

That's a good point. It would seem that he's hoping it just 'passes through' from the main, I guess? But that doesn't seem right to me. Shouldn't he have the Pi connected to the main power source and then IT'S distributing power? Oh and he plans to put a 10A fuse on the main power source input.

 

How will you get 5V 2A from soundcard?
Besides that, In theory, it could work... but also in theory, communism is a great idea, until human greed screws it up..

Ah, his sound card is specifically made to power the Pi.

http://wiki.52pi.com/index.php/X5000P_Raspberry_Pi_HiFi_Sound_Card_SKU:EZ-0053

 

Hi, I can't see how this soundcard can power the Raspberry Pi.

I think you need an external power source.

 

Hi, I can't see how this soundcard can power the Raspberry Pi.




I think you need an external power source.

Of course, you do. It has power-in at the top right corner.

 

Of course, you do. It has power-in at the top right corner.

OK, and how is this power connected to the Raspberry?

 

OK, and how is this power connected to the Raspberry?

From the spec sheet:

• AMP can be enabled / disabled with jumper link
• Powers the Raspberry Pi - no additional power supply

 

Through the RasPI GPIO connector? There are a couple of +5V and GND pins.

 

Ok, but how is this sound card connected to the Raspberry Pi? Only with the HDMI?

Let's say that you have the RPi and the sound card. You mount the sound card on top of the RPi. Then you connect the HDMI connector between the sound card and the Pi, like the bottom picture in post #5. What will happen when you connect 6-24vDC to the top right connector? How will this power reach the Pi, and power it up?

 

It's basically a hat. It mates with the RPi via the 40 pin connector. you can just see it in the back.

Looking at this board, it's actually pretty nice. Spec-wise anyway. If it's not super pricey, I'd buy one but couldn't find any place that actually sells it. X5000P search on the site doesn't show and google-jitsu doesn't either. Ah, found it. typo on search though it still doesn't show on internet searches other than that site.

 

I agree that it's a neat board, but I'm sceptical to power the RPi through GPIO #2 and #6. One of the reasons are

If an incorrect voltage is applied, or a current spike occurs on the line you can permanently damage your Raspberry Pi. At best, you’ll “burn out” some or all of the GPIO pins, at worst you can fry your Pi! So be careful.

Isn't it a bit overkill to use this for:

A friend is making a small computer for surfing

It would be nice if you told us how it went with the project.

 

I can see you are a non-believer. That's fine. Just note that you wouldn't be putting power to any of the gpio pins, just the dedicated power (2 and 4). I don't see a problem with that.

 

Man, that board is soooo close. If it had an SP/DIF connector, I would be powerless..

 

Man, that board is soooo close. If it had an SP/DIF connector, I would be powerless..

Where did you find it for sale? Got a link?

 

it's on the site that has the wiki. you have to search for X5000P on their home page. $60.