<![CDATA[RS232 to M5 Basic/Gray?]]>Hey Guys,
I have a Basic and Gray Core and also have Commu modules with CAN and RS485. What is the easiest way to get RS232 into the units? Should I try an RS232 to RS485 converter, or should I go with another solution? I see that there might be issues with the RS485 implementation in the commu module?

In any case, trying to get RS232 serial data in to the Core to display it.

If someone could point me in the right direction I would be grateful.

Cheers!
John

]]>https://community.m5stack.com/topic/2226/rs232-to-m5-basic-grayRSS for NodeTue, 05 May 2026 03:30:52 GMTFri, 21 Aug 2020 01:56:46 GMT60<![CDATA[Reply to RS232 to M5 Basic/Gray? on Fri, 21 Aug 2020 06:50:06 GMT]]>Hello John

A couple of M5Stack modules (like GPS) already use a serial connection via GPIO16 and GPIO17. However GPIOs only provide logical voltage levels (0V / +3.3V).

Assuming your source is a standard RS232 device the voltage levels can go down to -15V and up to +15V so you probably need a level converter like this one:

https://www.amazon.com/Serial-Converter-Equipment-Upgrades-Doupont/dp/B01N42QW8X/ref=sr_1_6?crid=2OZ5U3Q7GY5OS&dchild=1&keywords=ttl+rs232+converter&qid=1597992249&sprefix=ttl+rs2%2Caps%2C276&sr=8-6

Cheers
Felix

]]>https://community.m5stack.com/post/9780https://community.m5stack.com/post/9780Fri, 21 Aug 2020 06:50:06 GMT