<![CDATA[Atom Switch TX/RX Pins]]>Hello... I have an ATOM-HUB SWITCH and I see on the label there are Rx(33) and Tx(23) pins available. I assume these are hardware serial pins that are available for use but I can't figure out how to connect wires to these pins. There are two holes at the end of the Switch where the label indicates the pins to be but I can't see how I would connect to them. Do I need to open up the Switch case to access them?

Thanks,

Greg

]]>https://community.m5stack.com/topic/4290/atom-switch-tx-rx-pinsRSS for NodeFri, 08 May 2026 02:46:12 GMTWed, 11 May 2022 13:46:12 GMT60<![CDATA[Reply to Atom Switch TX/RX Pins on Wed, 11 May 2022 19:11:44 GMT]]>Thanks @felmue , I did notice that too so I used continuity tester to see if andy of the RS-485 terminal screws were directly connected to the header pins that connect to the Atom's 33/23 pins I did't detect any continuity. I want to connect a Nextion Display that uses a Serial connection to the Atom Switch and was hoping to utilize Pins 33/23. I'm thinking I may need to purchase something like the MAX485 RS-485 module to attach to the Nextion display and run my serial connection over this RS-485 connection. Think I have some reading to do. ;)

]]>https://community.m5stack.com/post/17473https://community.m5stack.com/post/17473Wed, 11 May 2022 19:11:44 GMT<![CDATA[Reply to Atom Switch TX/RX Pins on Wed, 11 May 2022 16:46:11 GMT]]>Hello @Uzr66

from what I can tell from the ATOM HUB SwitchD schematic those two GPIOs (33 and 23) are used for the RS485.

Thanks
Felix

]]>https://community.m5stack.com/post/17470https://community.m5stack.com/post/17470Wed, 11 May 2022 16:46:11 GMT