I am looking for an off-the-shelf HAT that provides RS-485 through the RPi's inbuilt serial as well as a Real-Time Clock.
I was using the RasPiComm HAT to provide this functionality, but I cannot source these anymore. The closest alternative I have found is the Sfera Labs Strato Pi Base Board https://www.sferalabs.cc/product/strato-pi-base-board/. As this HAT will be used in a low-volume commercial product, I do not want to stack separate RS-485 and RTC HATs on the GPIO pins.
Can anyone suggest any other alternatives?