Audio Circuit Prototype Layout update, minor design change, diagnosis
We have a set of modular circuit designs that lead to SMT layouts and prototypes for an audio circuit, with a few adjustments that need to be made and problems that need sorting out. Both build SMT prototype boards and unbuilt through-hole prototypes are available, BOM and diagrams. The following adjustments need to be made to the layout:
- One of the capacitor pads is too small
- Five headers need to be removed
- Components need to be cleared from support areas of the case
For the design change, a small LED should be added to indicate USB power has been applied.
As for troubleshooting, the prototype isn't recognized by the USB bus, it may be something simple, but a full review of the design and layout is expected.
There are about 100 total components, 13 of which are ICs.
(New layouts are currently in Altium)