Hi,
I currently use many Atom S3 Lite which only have 320KB of RAM or so (and 8 MB Flash Memory).
The Core S3 has 16MB Flash and 8MB of PSRAM according to https://docs.m5stack.com/en/core/CoreS3.
But it is also VERY expensive at 50+ EUR and has many things I don't really need (Capacitive LCD, Battery, MicroSD, Speaker and MIC for one) since I mainly play with CANbus/RS485/WiFi/BLE.
Is there a low-cost version of the ESP32-S3, "just" with the extra PSRAM?
I could not find one at least ...
I purchased several Atom S3 Lite for various projects.
The Isolated RS485 Unit (SKU: U094) looks like the safest option, since it provides galvanic isolation between RS485 and the Atom S3 Lite.
However, for a better mechanical integration, the ATOMIC RS485 Base (SKU: A131) would be more appropriate, as the Atom S3 Lite could simply plug in directly, without having to hang as a separate thing with a cable in the case of the SKU 094 / RS485 Unit.
However, it seems to me that the ATOMIC RS485 Base is NOT isolated.
Or am I missing something ?