Thanks. I was hoping I'd missed some way to do this in UIFlow, as it is fun to knock up some code that way. But ... back to C for me.

@doublep hello, could you refer me to where you read that value from?

Hello @DG4EK I've just tried the current Factory Test firmware from github on my M5StickC and it works just fine for me. Re file size too large: Arduino IDE: choose partition scheme: No OTA (Large APP) PlatformIO: add board_build.partitions = no_ota.csv to platformio.ini Hope this helps. Cheers Felix

so - I installed that driver -- and it works ! (on all of my PCs and notebook) Perfect !! I found that I have to burn the M5Flow UI 2 times. The first time the burn process was very fast (about 5s) and after that the device shows no reaction - screen black - no reaction on any key. (according to the PC display everything was ok - no error) The second time burning was about 5 times slower, but now every thing is as it should be. The M5Stick works and I can use UIFlow. Strange -- maybe sometime anybody can explain ........ @sudoku: Thanks again for your help. regards K.D.

Hello @akshaypatil yes, 'bat' and 'gnd'. I suggest you also check out the M5StickC schematics. Cheers Felix

Hello @juanpablo unfortunately the current version (as of today) of the official M5StickC Plus library is still broken in regard of light sleep or deep sleep. The faulty function is SetSleep() which powers M5StickC Plus completely off (as you encountered) and therefore the system cannot wake from light sleep or deep sleep. This is also the reason you have to press a button to power the system back on again to allow for a new download. So yes, the problem is related to the official library. At this point I would not count on the issue being officially resolved anytime soon - the issue has been raised a couple of months ago, the solution is simple, but the M5Stack engineers seem to be busy with new stuff rather than fixing bugs for older hardware. That said, fortunately the issue can be fixed easily. I suggest you follow the advise in the issue you mentioned and fix the SetSleep() function in your local copy of the M5StackC Plus library yourself. Good luck! Felix

Thank you very much for your help. soky157

Hello @ozehnder looking at the factory test source code, error 0x21 appears when the AXP192 temperature reading either is below 5 or above 90 - which is used as an indicator that communication with AXP192 cannot be established. I probably would try to run the AXP192 example to see if the AXP192 really refuses to communicate and if yes contact the store for a replacement. Thanks Felix

https://www.espressif.com/en/support/download/other-tools [image: 1609379764683-199.jpg] https://community.m5stack.com/topic/814/error-on-downloading-to-m5stickc/2#

Hello @helo-head could you share your code (or at least the WiFi relevant part)? Anyhow, below is how I can successfully connect my M5StickC Plus to WiFi: #include "M5StickCPlus.h" #include <WiFi.h> const char* ssid = "ssid"; const char* password = "password"; void setup() { M5.begin(true, true, true); Serial.printf("Connecting to %s ", ssid); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(" CONNECTED"); } void loop() { } Thanks Felix

When you create a program in UIFlow, if you use the play button > the program is only stored into the devices ram. In order to perminatly store the program on a device, you need to Download the program to the device using the download option in the menu or the save button at the bottom of the screen.

have you set it in usb mode? it seems to keep changing often how you change to usb mode on stickC, but generally if you mash some buttons when it starts up you should se different options

Hello @ajb2k3 thank you for taking care of the forum and keep spam at bay. I appreciate it. Thanks Felix

Hello @Zontex thank you for checking with your engineers regarding possible long term damage for the RTC backup battery. It's good to know there is none expected. This M5StickC Plus was part of order M5-8036 and the serial number is (I think): [image: 1606915669299-m5stickcplusserial.png] In case that is not the serial number, then please kindly let me know where I can find it. Thanks Felix

Thank you felmue. I didn't realize, that I need to update the M5Burner. Works like a charm now, thanks again. Cheers.

Hi @vgamlc I don't think you can change the volume of the beep. Although there is a setVolume() function the volume is only used in the PlayMusic() function, but not for the beep. Please also refer to the Speaker source code Thanks Felix