Add Volume-daughterboard files

Author: LouDnl

README.md

@@ -394,6 +394,9 @@ the open source KiCad design files and gerbers documents below.
 #### revision v1.5c
 - [USBSID-Pico v1.5 schematic](hardware/v1.5c-schematic.pdf)
 - [USBSID-Pico v1.5 interactive BOM](https://htmlpreview.github.io/?https://github.com/LouDnl/USBSID-Pico/blob/master/hardware/v1.5c-ibom.html)
+#### volume-daughterboard v1.0
+- [USBSID-Volume-daughterboard schematic](hardware/volume-daughterboard-schematic.pdf)
+- [USBSID-Volume-daughterboard KiCad project & gerber files](hardware/Volume-daughterboard/README.md) 
 #### Datasheets of parts used
 [Datasheets](resources/)
 
@@ -463,6 +466,9 @@ USBSID-Pico v1.5 PCB © 2026 by <a href="https://github.com/LouDnl">LouD</a> is
 ### USBSID-Pico v1.0 PCB Hardware License ~ Creative Commons
 <a href="https://github.com/LouDnl/USBSID-Pico/tree/master/hardware/USBSID-Pico-v1.0">USBSID-Pico v1.0 PCB</a> © 2024-2026 by <a href="https://github.com/LouDnl">LouD</a> is licensed under <a href="https://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International</a><img src="https://mirrors.creativecommons.org/presskit/icons/cc.svg" alt="" width="20em" style="max-width: 1em;max-height:1em;margin-left: .2em;"><img src="https://mirrors.creativecommons.org/presskit/icons/by.svg" alt="" width="20em" style="max-width: 1em;max-height:1em;margin-left: .2em;"><img src="https://mirrors.creativecommons.org/presskit/icons/sa.svg" alt="" width="20em" style="max-width: 1em;max-height:1em;margin-left: .2em;">  
 
+### USBSID-Volume-daughterboard PCB Hardware License ~ Creative Commons
+<a href="https://github.com/LouDnl/USBSID-Pico/tree/master/hardware/Volume-daughterboard">Volume-daughterboard v1.0 PCB</a> © 2026 by <a href="https://github.com/LouDnl">LouD</a> is licensed under <a href="https://creativecommons.org/licenses/by-sa/4.0/">Creative Commons Attribution-ShareAlike 4.0 International</a><img src="https://mirrors.creativecommons.org/presskit/icons/cc.svg" alt="" width="20em" style="max-width: 1em;max-height:1em;margin-left: .2em;"><img src="https://mirrors.creativecommons.org/presskit/icons/by.svg" alt="" width="20em" style="max-width: 1em;max-height:1em;margin-left: .2em;"><img src="https://mirrors.creativecommons.org/presskit/icons/sa.svg" alt="" width="20em" style="max-width: 1em;max-height:1em;margin-left: .2em;">  
+
 # Certification
 ### USBSID-Pico v1.3 PCB OSHWA certification
 (soon!)

hardware/Volume-daughterboard/README.md

@@ -0,0 +1,13 @@
+# USBSID-Pico v1.3 PCB design files
+This directory contains the open source gerber files for v1.3 of the USBSID-Pico pcb.  
+
+# Disclaimer
+I do this stuff in my free time for my enjoyment. Since I like to share my joy in creating this with everyone I try my best to provide a working PCB and Firmware. I am in no way an electronics engineer and can give __no guarantees__ that this stuff does not break or damage your hardware, computer, phone, or whatever you try to hook it up to. Be sure to take great care when inserting any real MOS SID chips into the board. While everything has been tested with real chips, this is in no way a guarantee that nothing could go wrong. Use of this board and firmware at your own risk! I am in no way responsible for your damaged hardware. That being said, have fun!
+
+# License
+### Software License ~ GNUv2
+All code written by me in this repository is licensed under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+Any code in this repository that is not written by me automatically falls under the licensing conditions by the authors of said code as mentioned in the source code header.
+For for more information about this license please read the LICENSE document in the root of the USBSID-Pico repository.
+### USBSID-Pico v1.3 PCB Hardware License ~ Creative Commons
+<a href="https://github.com/LouDnl/USBSID-Pico/tree/master/hardware/USBSID-Pico-v1.3">USBSID-Pico v1.3 PCB</a> © 2025 by <a href="https://github.com/LouDnl">LouD</a> is licensed under <a href="https://creativecommons.org/licenses/by-nc-nd/4.0/">Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International</a><img src="https://mirrors.creativecommons.org/presskit/icons/cc.svg" alt="" style="max-width: 1em;max-height:1em;margin-left: .2em;"><img src="https://mirrors.creativecommons.org/presskit/icons/by.svg" alt="" style="max-width: 1em;max-height:1em;margin-left: .2em;"><img src="https://mirrors.creativecommons.org/presskit/icons/nc.svg" alt="" style="max-width: 1em;max-height:1em;margin-left: .2em;"><img src="https://mirrors.creativecommons.org/presskit/icons/nd.svg" alt="" style="max-width: 1em;max-height:1em;margin-left: .2em;">