Looking for a bit of advice:
I've always used STB's for my subscription cards, but it is always a pain because I need multiple due to the number of cards I have, and the fact that if I need the STB for testing, I lose that card in my house which may impact people watching or planned recordings (or it will impact my development work ).
To solve this, I want to switch to a dedicated card server, using Smargo triple readers.
My first port of call was my NAS (a Synology DS414 which is already running anyway). I have Oscam installed, I have USBserial installed, I have Oscam see the reader and the cards, it can read the entitlements, but the ECM's seem to have a problem getting to the card (Invalid ecm type for card errors). I find plenty of people online with similar problems, but no one who posted a solution.
So the question is what is the next best solution, low power and cheap? A Rasberry Pi? Something else that is guaranteed to work?