Railway "Cab Signalling" systems, particularly those used for Automatic Train Operation (ATO) is another topic I find very interesting.
Modern systems typically use "Balises", often similar to RFID in operation, and a wireless link to the train (occationally WiFi).
While these are great from an operational perspective, I'm much more …
This post is a summary of a display connector standard I defined about 10 years ago.
I'd noticed that a lot of small SPI connected LCD modules used a fairly similar interface (Clock, Data, CS, Reset, and Register select), and thought it would be quite nice if the same …
The iD ("Intelligent Device") protocol was a method of connecting multiple devices (typically up to 30) on a single wire.
One example of a device supporting this protocol was the "Karizma" panel from Advanced Design Electronics, but a number of other vendors also supported this protocol (including Texecom and …