<![CDATA[Cat-M1, and Cat-M1+GNSS breaks core/atom]]>Whenever I plug a Cat-M1 module (Including Cat-M1+GNSS) into a core it refuses to turn on even when plugged in, and when I plugged it into an AtomU the computer the AtomU was plugged into momentarily showed a blank screen and didn’t accept input, in a StickC-Plus it worked fine on startup but anytime I ran a program, It just showed a blank screen. I’m not sure if this is a power draw issue, user error, bad manufacturing (but I wouldn’t expect that from M5), or something else.

]]>https://community.m5stack.com/topic/4489/cat-m1-and-cat-m1-gnss-breaks-core-atomRSS for NodeFri, 08 May 2026 14:38:53 GMTTue, 02 Aug 2022 07:11:41 GMT60<![CDATA[Reply to Cat-M1, and Cat-M1+GNSS breaks core/atom on Sat, 06 Aug 2022 05:04:40 GMT]]>@felmue plugging it into a 12VDC 3A power supply makes it work fine on all of my devices, so it was just power draw issue.

]]>https://community.m5stack.com/post/18203https://community.m5stack.com/post/18203Sat, 06 Aug 2022 05:04:40 GMT<![CDATA[Reply to Cat-M1, and Cat-M1+GNSS breaks core/atom on Wed, 03 Aug 2022 18:16:10 GMT]]>Hello @HWTaro9

I don't have the Cat-M1+GNSS module so I cannot test myself. But yes, what you are describing with the various M5Stack cores sounds either like a power draw issue or a defective module.

Have you tried to power the Cat-M1+GNSS module with its own power supply instead of relying on whatever the USB port can deliver?

Thanks
Felix

]]>https://community.m5stack.com/post/18183https://community.m5stack.com/post/18183Wed, 03 Aug 2022 18:16:10 GMT