Old DC Charger to USB C PD

[EnduringGuerila]

Maybe I'm mistaken but it looks like you have 2-3 boards that are similar but backwards of what I want. I think they are taking a USB C input and outputting either variable based on 3 switches or max based on whatever the supply can handle, etc. I am looking for a cheap board to convert my old DC power supplies/chargers into PD chargers for modern devices. I can 3D print housings for the boards, screw or solder input wires and have a usb c port for output.

Any ideas on creating such a board or where to find one if it already exists?

Some of my existing power supplies happen to be the right output voltages for certain applications so I could just wire a usb c cable straight to it but then it'd only work on very specific devices with matching voltage requirements.