Hi @dmshimself [image: 1669073657551-m5atomechopinout_20221122.png] available pins are: G21, G25 - on the right - first and second pin from the top G26, G32 - at the bottom - third and fourth pin from the left Please note: non of the above pins can drive 5 V; they are (as are all ESP32 GPIO pins) 3.3 V only. Thanks Felix

Hi Paopao, I am in your same situation, I have been trying to communicate UHF-RFID-UNIT with Aton Lite and I don't know the right code. Could you spend the code to start my project? Thank you

Hello @Otofoto are the aforementioned 25 minutes from a fully charged TailBat? That seems a bit short. I've measured the power consumption of the Atom GPS kit (w/o sd card) and it takes about 100 mA. So it should not suffer from a premature shutdown due to consuming too little power as the shutdown current limit in the TailBat is about 45 mA. The TailBat has a 190 mAh battery - so theoretically you should get close to 2 hours out of it. Thanks Felix

Hello @sgu it looks like ATOM GPS is broken in current UIFlow. It doesn't work for me either. That said, I found that I can use the GPS unit blocks instead (with default custom GPIOs). [image: 1663425634253-uiflowatomgpsusinggpsunit2_20220917.png] [image: 1663425623138-uiflowatomgpsusinggpsunit1_20220917.png] Thanks Felix

@akscj Yes, you can. (Atom doesn’t have a battery though, so it’s not “charging”)

@sgu I don’t really know of a way to do this, maybe M5 could make a Unit USB. Or maybe me or you could design one.

@holofloh Ahh, thank you! I think I understand a little better now. I think I misunderstood exactly what an access point was supposed to do. I'll try your suggestions and let you know how it works. Thanks again!

Hello @ANDYSM M5Stack Atom Lite: Long response times and wifi connection losses https://forum.m5stack.com/topic/4527/m5stack-atom-lite-long-response-times-and-wifi-connection-losses M5Stack Community New CH552 firmware for Short-Wifi-Issue of M5Atom/Stick/TimerCAM/etc. : About 9 months ago

Many thanks to you for all the advice! I was indeed using a servo way too powerful for the atom. My mistake, I've learnt something :) All the best to you

Hello @RolfF It's a design mistake. It is a basic mistake to add 5V to 3.3V system. 5V enters the RF circuit, causing deterioration or damage. There are many cases where ATOM has already broken. : M5Stack Community Short Wifi effective range and IO0=3.9V issue with Lite and Matrix : About a year ago https://forum.m5stack.com/topic/3048/short-wifi-effective-range-and-io0-3-9v-issue-with-lite-and-matrix : M5Stack Community New CH552 firmware for Short-Wifi-Issue of M5Atom/Stick/TimerCAM/etc. : About 9 months ago https://forum.m5stack.com/topic/3768/new-ch552-firmware-for-short-wifi-issue-of-m5atom-stick-timercam-etc : Bugs and measures for M5Stack ATOM : 2021.10.10 https://macsbug.wordpress.com/2021/10/10/bugs-and-measures-for-m5stack-atom/ : How to not change FW. Other measures : Low the voltage of GPIO_0. The voltage on GPIO_0 decreases and the transmit power increases. digitalWite(GPIO_0,LOW);

Wow, your balancing star is impressive! I'm just playing around in UIFlow to see what's possible with this device.

Same problem with the CORE2, do you have a solution for this error with M5burner V3 under win10

This is normal if the Atom is not doing anything. The Power chip expects a certain load to keep alive, it the atom is in standby then the load is too small and will cut out.