Update README.md

Author: visrealm

README.md

@@ -75,6 +75,8 @@ If you would like to support this project, you can [order your PCBs from my PCBW
 | 1        | Raspberry Pi Pico (plus headers)  | U1                                |
 | 1        | MicroSD card connector            | U2                                |
 
+There is a more detailed BOM in the schematics folder. Alternatively, I have created a [Mouser project](https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=8431486f76) for this which contains everything except for the NES connectors which can be obtained from AliExpress.
+
 ### Thanks
 
 Thanks to [PCBWay](https://pcbway.com/g/186WQ9) for supporting this project.