Hello guys, I'd like to give you some infos about a project I've worked on for the last few days.
It is a custom audio amplifier with some neat features:
This is still a work in progress, I've just finished designing the PCB layout. I will double check it and then I will order some of them from OSHPark. Here is a sneak preview of how the board will look like (click on the image to see a high resolution one):
The board is 2.86x0.93 inches (72.69x23.49 mm).
Let me know what you think about it!![Smile :) :)](http://forums.modretro.com/smilies/bh_icon_smile.gif)
UPDATE (3rd of February 2016):
I double-checked the PCB design and I fixed some minor mistakes. I've just ordered 3 boards from OSHPark, I should get them in a month (heh, I should find a cheap PCB manufacturer in Europe).
I'll update you as soon as I receive the boards![Smile :) :)](http://forums.modretro.com/smilies/bh_icon_smile.gif)
In the mean time I'm also looking for a simpler and cheaper solution that will allow me to build a smaller pcb![Smile :) :)](http://forums.modretro.com/smilies/bh_icon_smile.gif)
PS: This was done because I want to implement it in a GCp, since it has I2S input, so that's why I wrote this post here, but please mods move it to another section if you think this is not the right place.
It is a custom audio amplifier with some neat features:
- 2.5W/channel of output power for a 4 ohm load
- Integrated headphone jack with plug sense
- Selectable analog or I2S input
- Digital controls for audio volume
- The volume can be set indipendently for the headphones and for the speakers
- 8 IO ports of which 2 are used for the volume switches and 1 to set the input (I2S or analog). The remaining 5 might be used in the future, I'm still unsure how
This is still a work in progress, I've just finished designing the PCB layout. I will double check it and then I will order some of them from OSHPark. Here is a sneak preview of how the board will look like (click on the image to see a high resolution one):
The board is 2.86x0.93 inches (72.69x23.49 mm).
Let me know what you think about it!
![Smile :) :)](http://forums.modretro.com/smilies/bh_icon_smile.gif)
UPDATE (3rd of February 2016):
I double-checked the PCB design and I fixed some minor mistakes. I've just ordered 3 boards from OSHPark, I should get them in a month (heh, I should find a cheap PCB manufacturer in Europe).
I'll update you as soon as I receive the boards
![Smile :) :)](http://forums.modretro.com/smilies/bh_icon_smile.gif)
In the mean time I'm also looking for a simpler and cheaper solution that will allow me to build a smaller pcb
![Smile :) :)](http://forums.modretro.com/smilies/bh_icon_smile.gif)
PS: This was done because I want to implement it in a GCp, since it has I2S input, so that's why I wrote this post here, but please mods move it to another section if you think this is not the right place.