Topics tagged with core2

Increase the sample rate for UWB sensor

Fri, 21 Nov 2025 06:08:52 GMT

NTP time does not work in v2.1.8 on Core2

Doswiadczalnik — Mon, 25 Nov 2024 12:20:01 GMT

@mb How do you get NTP time in UiFlow2? O cannot see NTP module. It was in previous UiFlow, but now I can't find it.

"Set timezone" block does not work in v2.1.8 on Core2

kuriko — Mon, 25 Nov 2024 11:54:18 GMT

@mb this issue was fixed in 2.1.8-hotfix

"Traceback" on Core2 with UIFlow v2.1.8, when running fresh project

kuriko — Sun, 24 Nov 2024 10:34:16 GMT

@mb If the program runs normally, I don't think this should be a problem

CORE2 v1.1 does not power up when battery connected

Thu, 23 May 2024 01:43:02 GMT

Core2 V1.1 Battery not working if unplugged

konacurrents — Mon, 12 Feb 2024 18:57:21 GMT

Unfortunately as of today, my Battery isn't working again. I can update and run will using USB power but unplugging kills the M5Core.

Can Core2 Capacitive Touch Buttons be colored?

Wed, 24 Jan 2024 05:00:08 GMT

How to work vibration on Core2 V1.1 (K010-V11)?

MAFTY — Mon, 15 Jan 2024 05:30:10 GMT

Hi felmue, Thank you for your comment. I have done with M5.Axp.SetVibration command. Thank you!

M5Core2 remote controller and display for MoodeAudio player (MPD)

Tue, 28 Feb 2023 13:29:42 GMT

Core2 Default Partitioning in Arduino IDE 1.X

mongonta555 — Mon, 20 Feb 2023 03:51:30 GMT

Hello, @wsanders The app0 and app1 partitions are used for firmware update with rollback in case of failure. It is also used by the OTA function. https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/ota.html

m5list on Core2

Mon, 07 Mar 2022 10:10:21 GMT

GPS Module reboot problems

felmue — Thu, 10 Feb 2022 09:23:40 GMT

Hello @macsbug there should be no need to cut traces in the GPS module. For M5Core2 defining GPIO13 and GPIO14 in UiFlow (instead of GPIO16 and GPIO17) should do the trick. Or am I missing something? Thanks Felix

Core 2 and Faces Bottom II compatible?

Sat, 16 Oct 2021 11:09:06 GMT

M5Stack Core2 "Restart On" block not working v1.7.8

bbgott — Fri, 11 Jun 2021 19:41:15 GMT

Upon further testing and investigation, my original observation is incorrect. It seems that the blocks are mostly working correctly. It does not seem to be an issue with a specific version either. When I setup a simple UIFlow sketch to "Restart after 10 seconds", the first time I run it it correctly restart after 10 seconds. It then seems that the IRQ register isn't set right because it won't restart again if I immediately run the code again. If I instead power of the Core2 and then power it back on with the button on the side it will then run the code correctly and restart the device. It does not seem to be a hardware issue as the example wake on rtc code in the M5Core2 arduino library works correctly every time.

[Core2] M5Timer-Lib // How to use "numTimer" in e.g. "setInterval()"

felmue — Mon, 08 Feb 2021 16:06:42 GMT

Hello @wa-berlin you can't. Functions w/o numTimer argument will return the internal number assigned to a specific timer. You don't have direct control about which timer gets which number, but you can keep a record of the number assigned to a given timer to further manipulate it. Below is an example with 2 timers (A and B). Timer A counts up ever 2 seconds, whereas timer B counts up every second and stops at 10. With button A you can enable and disable timer A. With button B you can restart timer B once it has stopped. #include #include M5Timer M5T; int mytimerA = -1; int mytimerB = -1; int mycountA = 0; int mycountB = 0; void myTimerACB(void) { mycountA++; } void myTimerBCB(void) { mycountB++; } void setup() { M5.begin(); M5.Lcd.setTextSize(3); mytimerA = M5T.setInterval(2000, myTimerACB); mytimerB = M5T.setTimer(1000, myTimerBCB, 10); } void loop() { M5.update(); M5T.run(); if(M5.BtnA.wasPressed() == true) { if(M5T.isEnabled(mytimerA) == true) { M5T.disable(mytimerA); } else { M5T.enable(mytimerA); } } if(M5.BtnB.wasPressed() == true) { if(M5T.isEnabled(mytimerB) == false) { M5T.deleteTimer(mytimerB); mycountB = 0; mytimerB = M5T.setTimer(1000, myTimerBCB, 10); } } M5.Lcd.setCursor(0, 0); M5.Lcd.printf("Timer A: %s\n", M5T.isEnabled(mytimerA) ? "enabled " : "disabled"); M5.Lcd.printf("Timer A: %04d", mycountA); M5.Lcd.setCursor(0, 100); M5.Lcd.printf("Timer B: %s\n", M5T.isEnabled(mytimerB) ? "enabled " : "disabled"); M5.Lcd.printf("Timer B: %04d", mycountB); } Good luck! Felix

I want to communicate data with M5stack Core2 and COM.Sigfox.

takero — Mon, 18 Jan 2021 08:11:43 GMT

@felmue While I was writing to Core 2, I pressed the power button for a long time and the writing was successful. Thank you.

Core 2 and COM.X LoRaWAN Module 868MHz (ASR6501)

felmue — Tue, 12 Jan 2021 22:36:59 GMT

Hello @flex Sorry, I don't know if it's meant as workaround. M5Stack is not shy to use the term 'ultra low power' or 'very low power' for their products. And that is correct for several ICs used in M5Stack devices, like the ESP32 itself and yes, LoRaWan etc. Unfortunately however, in my experience, the way M5Stack integrates those low power ICs into their products very often isn't ideal to create a low power device. But to be fair, they also need to ensure, that stacking various modules to the older cores (Basic, Fire, etc.) and newer cores like M5Core2 do not destroy each other. So, it could very well be that the two diodes I mentioned before are a precaution. BTW: I myself asked this question a long time ago for M5Core2, but it never got an answer. Thanks Felix

Core 2 and COMMU

ChrisZang — Wed, 16 Dec 2020 09:35:51 GMT

@chriszang and another update. So I am happily working on my CAN receiver sketch and just noticed that I forgot to press the button that grounds INT-output of the mc2515 but the upload still worked. Gave it another try (w/o pressing the button) and it's still working - weird. Then I swapped this COMMU module for my 2nd COMMU Module and here the upload doesn't work. My explanation is that the grounding of the mcp2515 INT-output basically created a short circuit in the transistor that controls this pin and eventually burned it out. Not a big problem for me as a) I am not using interrupts in my sketch b) I have a 2nd COMMU unit I just wanted to warn you guys that grounding the INT output has unintended consequences.

Core2+GoPlus2+M5GO2

Nlindin — Tue, 15 Dec 2020 13:12:10 GMT

Thank you!