Hello @jamesarm97 please check out the example code below to get the card UID into an UIFlow2 label. Notes: you need to create a label first observe the global rdr statement at the top of the first Execute code block. It is required to make the function getUID work observe the function getUID is of the type with return parameter, although it is not set. The return value is set by the return statement in the Execute code block. Please find the complete example here. Thanks Felix

@ajb2k3 thanks so much for that insight. Do you have an implementation of HV write mode for the Paper display in a different platform (UIflow etc)? Don't worry if not, because it seems that existing shutdown() is able to retain images according to @felmue's example.

@ajb2k3 said in ATOM S3, How to switch to online programming mode?: By pressing the screen on boot My case, This is to enter programing mode. not come back to App mode. My version is UIFlow2.0 Alpha28. what version did you success this way? M5Burner to get into app mode This doesn't work. I did following step. Please advice if the step is wrong. Open M5 burner and select ATOM S3. Connect USB to ATOM S3, hold reset button dew second until internal LED turn on. Click "Configure" of UIFlow2.0 Change Boot option to "Run main.py directly" Click next to burning the setting once window shows "success", remove USB from Atom S3 and re-connect After this step, the program does not start. The window is just black screen. What version of UIFlow are you using?

@hallinen Yes, I saw your comment over on https://github.com/m5stack/M5AtomS3/issues/23 The solution to my identical issue/14 was to burn-back (erase all) to 'Arduino15/staging/packages' and re-install the M5 latest board definition. Tinyu-Zhao's solution was: "Perhaps there is a local cache package that is not downloading the latest M5Stack version definition Please delete the following path, uninstall the M5Stack 2.0.6 definition and try again /Users//Library/Arduino15/staging/packages"

Hello @Steve1 well, there is an alternative method you could use. The power button also acts as regular button. So you could check if the power button was still pressed when M5Paper starts running. Something like this at the beginning of setup(): M5.begin(true, false, true, true, true); M5.RTC.begin(); M5.update(); bool pwrBtnStart = M5.BtnP.isPressed(); // true if started by PWR button Note: for it to work you'll need to press and hold the power button long enough for the code to reach the statement checking the button. In my tests I need to hold the power button for about 5 seconds. Note: a disadvantage of the power button check method is that when M5Paper is powered on by USB it thinks it was an RTC start. Thanks Felix

@pandian-nano Hi Felix and Pandian I am sorry. I was using an old M5Burner. Flashing with the M5Burner V1.12.8 and using the Web UIFlow everythings is working Thank you for your help kind regards piet

I have tested with a known-good other SD card (the previous one was brand new, out of the packet) and I cannot get a true return from SD.begin(...). Please can anyone help with how to address/debug this? Has anyone else reported their SD card reading failing before? EDIT: I have read some other instances of people having SD card issues on this forum. Having looked at their issues, I have ensured I have a 16GB (not larger) FAT32 formatted SD card. I have also tried SD.begin(4, SPI, 1000000); and 10 MHz too in M5EPD.cpp but it still returns false. I have also remembered to remove and reinsert the SD card between boot cycles where power has not been removed, so each SD.begin() should be the first that the SD card controller sees. Any other ideas?

@iot_dev Well done getting it working.

Thanks for the replies everyone.

@ajb2k3 Thank you very much for the clarification! :-)

@digiponta thanks for the update. I had forgotten that some cards are just not compatible

That’s coming but there are differences in the various versions and so collect them is a challange. The UIFlow2 version with the drivers

Hi @cwdallas, We will update the new uiflow firmware version next week (Thursday) and every two weeks once

@insight3fl burner was fast and easy to retore factory default including a few extras like wifi connect. There is also one other Burner program "Nemo" that works great. I hope for us newbees there will be more packed tools. I am receiving an order today for RFID, Enviromental, motion and a few other plug in modules. Thank you

Cool, thanks, @felmue. I might put the modem on/off on a button instead for a bit more control while testing.

@bergkatse I managed to resolve some of the issues that I was having and, implemented MQTT into my Core 2 monitoring. I stuck with UIFlow for this initial application to see how capable it was. It's not too bad however, I believe I will move to the Arduino IDE for more control. Here is the M5Stack Core 2 app that I created for your reference: I'm note sure if I implemented the WLAN functionality properly however, it works under all conditions. For example, if I exit the area of WiFi coverage, the connection resumes when I get back into range. Thank you

Thanks that worked!

@teastain thanks.

Is the UIFlow display showing the device connected to the network?