XLR looper box

[almondcity]

This is a box that takes a balanced line level input from my preamp and let's me send it to pedals and back to the computer

I have some more ideas for a future iteration such as including a preamp inside and others

 

[jcpst]

Nice, this is something I would like to do. Did you design the PCB or buy it somewhere?

 

[jwin615]

Nice!

 

[almondcity]

Nice, this is something I would like to do. Did you design the PCB or buy it somewhere?

I designed the PCB. I can provide gerbers and a schematic if you're interested

 

[jcpst]

I designed the PCB. I can provide gerbers and a schematic if you're interested

Yes, I am interested!

 

[almondcity]

Yes, I am interested!

OK I will get this to you or post a link later today. If I don't get it today remind me.

The one mistake I made on this was making the pcb mounting holes too small. I had to drill them slightly larger with a drill bit. If I can figure out the correct size for them I will before I send this

 

[Robert]

If I can figure out the correct size for them I will before I send this

I use 0.125" (3.175mm) for nylon standoffs.

 

[almondcity]

Here is my schematic, I will PM anyone that wants a Google Drive link to my gerber zip file that I had fabricated at JLC (I did increase the mounting hole size). Note: I don't technically know what I'm doing, I stole most of this from the DIYRE Color format schematic. I have done some test recording this morning and it's working well. If someone could tell me anything about all the 100n caps in the power section I'd like to know.

 

[Robert]

They're power supply decoupling capacitors.

I would place one as close as possible to its corresponding 100uF capacitor and place the others as close as possible to each of the IC power supply pins.

 

[mdc]

A cool useful box!
You might want to use MLCCs for those 100n caps.