<![CDATA[M5Stack RS485 Base and Unit]]>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 ?

]]>https://community.m5stack.com/topic/6288/m5stack-rs485-base-and-unitRSS for NodeThu, 30 Apr 2026 15:16:40 GMTMon, 01 Apr 2024 23:16:09 GMT60<![CDATA[Reply to M5Stack RS485 Base and Unit on Tue, 02 Apr 2024 16:16:54 GMT]]>Hello @luckylinux

correct, the Atomic RS485 Base is not isolated. See schematic here.

Compared to Isolated RS485 Unit which uses the CA-IS3082W IC - schematic here.

Thanks
Felix

]]>https://community.m5stack.com/post/24652https://community.m5stack.com/post/24652Tue, 02 Apr 2024 16:16:54 GMT