About a week ago, me and a friend had the idea to put an RTL-SDR in an ExpressCard slot. I had some free time, and ended up getting as far as reverse engineering the schematic for the generic RTL SDRs. As I was finishing that, I started to think about making one to go in a framework module, and found this thread. Knowing that the NESDR Nano fits in the space was enough for me to download the expansion card template…
I’m not sure how it happened so quickly, but I now have a design for a RTL-SDR expansion card close to done.
Unfortunately, I wasn’t able to find the chips for sale, so building one will involve desoldering the chips from a preexisting SDR and putting them on the custom board. I don’t really have the equipment for that, but that’s a problem for later. This is also my first time designing a PCB, so don’t expect it to be perfect.
I’m still trying to figure out some details, but I’m planning on ordering some boards in a few days.