Here you can see the final result. To power the raspberry I used two batteries of a Samsung S2 in parallel. It works very well. If you have any questions, shoot.

In the end I found the solution. In the following link an economical and functional power source.
https://s.click.aliexpress.com/e/xEIcZ2s

Thanks my friend

Dear friends. I have my game boy zero project almost finished. I used a raspberry pi 3b. The problem is that when the system starts up and the recalbox starts, it restarts again and again. If I connect a charger directly to the raspberry plate, it works correctly. I think it must be a problem of amp...

Hello friends.
For those who are a bit lost, here is a small outline for the sound of our Game Boy, based on Rpi3. I've tried it on my project and it works perfectly.
I hope it serves you.
A greeting.

Hello friends.
For those who are a bit lost, here is a small outline for the sound of our Game Boy, based on Rpi3. I've tried it on my project and it works perfectly.
I hope it serves you.
A greeting.

I use that connector. If you need help to connect it to the raspberry, you tell me. I have used it with my raspberry pi 3b.

Buenas noches. Voy subiendo mis progresos de mi game boy basada en raspberry pi 3 b con el sistema recalbox. Google-translated by mod: Goodnight. I'm uploading my progress of my game boy based on raspberry pi 3 b with the recalbox system. I am trying to use the most economical components, in order t...