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Modules

534
Topics

1.9k
Posts

H

I have the original LLM module (without the debug module), now EOL. I succesfully managed to power the board & read serial output, using a USB-TTL cable, so I can have the USB-C free to connect a usb hub (I want to connect both a webcam & a wifi dongle). Unfortunately this setup does not work for me. Can anyone think of a way to have access > 1 USB ports? Wish the LLM module itself or LLM Mate offered more USB ports
FAQS

When you meet problems using M5Stack, we help you solve it.

199
Topics

987
Posts

S

New M5 PaperS3 Screen completely black, flashing FactoryTest shows successful in M5 Burner. LED blinks when power button is cycled and the device is found by M5 Burner. Pressing or long-holding the power button cycles the LED green, then flashing orange, but nothing changes the display from completely black. Have tried flashing other firmware as well, none permit the screen to refresh. Note that the screen is a solid black, not grey. No lines at all appear, all the pixels are activated at their darkest.
Units

492
Topics

1.8k
Posts

M

Hello everyone,

I am new to M5Stack.

I have a Core 2 and the Ultrasonic i2c connected to it. Now I have the problem that the value on the Core 2 always shows -1. Am I doing something wrong when setting it up?
Connect, select unit, then insert the blocks, upload code.

Thank you in advance for your help.

Screenshot 2026-01-13 194529.png
Cores

Core2 for AWS M5Stack Fire M5stack Grey M5 Stick/StickC M5GO FACES Kit M5Stick V Core 2

1.3k
Topics

5.5k
Posts

E

@michael-koppelman
Maybe It's a form of watchdog that guards against the device powering on and then pointlessly flattening the battery while doing nothing because there is no code running. It protects the battery against wasted charge-cycles.
Or maybe it's just a 'feature' of the power control circuit. ;-)
Bases

53
Topics

197
Posts

W

Hi All,

I just purchase Base X connect with M5Stack FIRE, but I just realize that UIFlow 2.0 did not support Base X.

Is there have any plan for UIFlow 2.0 to support Base X in the near future?
Atom

For topics on the M5Stack Atom.

248
Topics

819
Posts

H

@Kabron
What about P1 and P2?

9c3ea450-9b4b-4402-85a2-80aa53d68031-grafik.png

M

Bar graph demo application is running extremely slowly on Paper S3

• • mwwalker

2

0
Votes

2
Posts

1.3k
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K

@mwwalker
PaperS3 do have a slow refresh rate. maybe the BarGraph demo isn't very suitable for test, you should try the rtc example: https://docs.m5stack.com/en/arduino/m5papers3/rtc
R

NEED HELP: No screen, PaperS3 beeps and returns Serial monitor communication....

• • RadghKris

8

0
Votes

8
Posts

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@RadghKris said in NEED HELP: No screen, PaperS3 beeps and returns Serial monitor communication....:

flags

I went and deleted this argument/variable from the library. May not have been the best thing to do, but it worked! I got the bar graph to work!!

So, I have one program that will display the screen, and one program that will beep the buzzer and communicate with the serial monitor.

Progress. Still not perfect, but progress.
S

Running ENV III Hat and SGP30 Unit Simultaneously on M5StickC Plus2

• • shiva

2

0
Votes

2
Posts

1.3k
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UIFlow.jpg
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PaperS3 Bluetooth?

• • RadghKris

1

0
Votes

1
Posts

917
Views

No one has replied
S

M5 stack paper stop storing data in preferences?

• • ScheduleDisplay

1

0
Votes

1
Posts

992
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No one has replied
M

LLM SKU: M140 Discontinued and now what

• • mumin50

2

0
Votes

2
Posts

1.3k
Views

A

@mumin50 They are releasing it as part of an upgrade kit with an adapter board that should be out next Friday.
https://docs.m5stack.com/en/module/Module LLM Kit
R

AirQ VOC measurements

• • rictim

3

0
Votes

3
Posts

1.6k
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I

@rictim thanks for pointing this out. I already guessed that fan isn't functioning in battery mode and thought of using the connector. But it looks like I need to hook them up to a USB battery pack for VOC. Assuming the sensors work also better when the fan works.
M

SPI on M5dial but i cannot use I2C port

• • mukul_100_

1

0
Votes

1
Posts

941
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No one has replied
G

How to disable M5stack fire power saving

• • gbastos

1

0
Votes

1
Posts

941
Views

No one has replied
S

can anyone support xiaozhi in cardputer?

• • steve_gerrard

1

0
Votes

1
Posts

854
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No one has replied
Q

Need advice for a Camera.

• • QuiqueMartinez

2

0
Votes

2
Posts

920
Views

K

@QuiqueMartinez
We don't have any camera model with night vision
A

DLight keeps giving max value

• • amateur58

1

1
Votes

1
Posts

779
Views

No one has replied
A

Controller that can be powered with 5v through GROVE

• • amateur58

5

0
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5
Posts

1.9k
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A

@felmue Thank you! I learned something today by downloading the PDF's and applying what you explained :)
A

Cardputer keeps restarting.

• • anubisdarkwatch

9

0
Votes

9
Posts

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@anubisdarkwatch said in Cardputer keeps restarting.:

@robski So with another firmware it was showing as having 98% charge, I just loaded UIFlow2 and it showed as 22%. Weird. So I have it charging now, hopefully that is the issue.

think it charges battery when connected and ON/OFF switch in ON position
O

Power not working between CoreS3 or CoreS3 SE <--> LAN module with PoE or RS232 module

• • oldrichsveda

5

0
Votes

5
Posts

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@felmue You're absolutely right about VBUS. When I flashed the example firmware from the Arduino IDE, the power supply worked normally. However, the factory firmware did not. How the hell is it possible that such a thing isn't described anywhere in the documentation? Thank you, you really helped me a lot.
W

cfg.clear_display=false has no effect on PaperS3?

• • wsanders

3

0
Votes

3
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1.6k
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Hello @wsanders

this issue has been fixed in recent M5Unified and M5GFX libraries - see here. Make sure you are using the latest versions of these two libraries.

BTW: I am using this feature in my non flickering RTC clock example - see here.

Thanks
Felix
M

Sending MIDI Signal via USB on M5Dial – Need Help!

• • Mehmetkara

2

0
Votes

2
Posts

1.2k
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Unfortunately you did not post your code so no one knows how you try to send the midi messages.
Check first: does the device apear as USB-MIDI-Class in your computers device manager?
Probably it is shown as a USB-Serial-Class device (which MIDI indeed is) but your MIDI application (seems to be a top secret application as you don't wrote which one) expect a MIDI-Class device.

Maybe this helps: https://github.com/esp32beans/ESP32USBMIDI
J

Sim800l

• • jpilarski

13

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13
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Hello @cepics

try changing the line to:
Serial2.printf("AT+CSTT=\"%s\",\"%s\",\"%s\"\r\n", apn, user, pass);
Thanks
Felix
Z

M5Paper loosing power completely

• • zoli0726

5

0
Votes

5
Posts

1.7k
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Looks like it has to do something with the bootloader.
I previously flashed the full factory-firmware which comes out of ESHome(platformio) build, but if I just flash the firmware to 0x10000, then it boots up all the time from battery as well. Needs more digging what could go wrong with platformio bootloader.
R

CoreS3 adding a External Speaker? or use bluetooth?

• • reptilepvp

1

0
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1
Posts

764
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No one has replied

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