@sambartle the battery voltage increase is actually because of the charging - the PMIC reports the charging voltage, and without the load of running the M5Paper from battery. Just by using the battery instead of an external power source, voltage can drop by 0.1-0.3V as well. The PMIC in this device is incredibly dumb, and some of the features (e.g. the charging/charged indicators) aren't even hooked up.

@zontex said in Can´t get token ATOM EchoSTT: Hey all, is the problem still happening? what UIFlow version are you using and what's the OS version? I'm using MacOS version M5burner 2.2.4 and EchoSTT in it 1.0-en. After the flash, ECHO normally connects to my WiFi, but after clicking on "Get Token" nothing happens for a long time and then it reports this error "Get token failed. Check your network status and retry ..". The internet works for me normally. I've been trying this way for over a week.

In your receive callback function you shouldn't use any time delay, this function should be as short as possible. This callback breaks/pause your main program like interrupt and run yours code. Probably in your case one of this callback "runs" time delay function when next receive callback at this moment run the same code as previous callback. In my case there is a small delay 5ms (but in compare to 1 seconds it is almost nothing) I make some receiver code for stickc, ewentually you make some cosmetic changes.

You can workaround this by using drawString instead, to an offscreen location. drawString returns the total width of the string drawn, and works for freetype fonts. int nWidth = canvas1.drawString(charBuffer,0,1000);

@jchipjonty glad you got it sorted out.

It was my screens resolution/zoom state. The button is now appearing.

@simons Another option... if you did not want to use wires/cables and I2C, you could go wireless and use ESP-Now. It’s really easy to implement in uiFlow as well. I’m not sure of your project requirements though. Just a thought. Good luck!

Hello! Thanks for replying, I have sent the file to liubo@m5stack.com The UIFlow program is running on v1.6.6 while the UIflow in core2 is running on v1.7.1

@yellowelise You have to do / when referencing the root in Arduino SD libraries.. I've modified your example to output to the screen instead of serial and fixed it for you.. (I left the syntactically redundant exists, try create anyways, exists code in as that's what the original example did, it probably needs another if) #include <M5EPD.h> M5EPD_Canvas canvas(&M5.EPD); File myFile; void setup(void) { M5.begin(); M5.EPD.SetRotation(90); M5.EPD.Clear(true); M5.RTC.begin(); canvas.createCanvas(540, 400); canvas.setTextSize(3); bool ret = SD.begin(4, SPI, 20000000); if(ret == false) canvas.drawString("SD ERROR...", 45, 100); else { canvas.drawString("SD OK...", 45, 100); if (SD.exists("/screen.txt")) canvas.drawString("Screen.txt Exists...", 45, 150); else canvas.drawString("Screen.txt Not Exists...", 45, 150); canvas.drawString("Try create Screen.txt", 45, 200); myFile = SD.open("/screen.txt", FILE_WRITE); myFile.println("Some text..."); myFile.close(); if (SD.exists("/screen.txt")) canvas.drawString("Screen.txt Exists...", 45, 250); else canvas.drawString("Screen.txt Still Not Exists...", 45, 250); } canvas.pushCanvas(0,0,UPDATE_MODE_DU4); } void loop(void) { }

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

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

tnks for answering,

thank you very much for this very valuable information for a beginner like me.

I#d love to see this in international versions with a compliant socket.. (the one shown here is not acceptable in the UK)

To go full circle and solve the issue... Are you using platformio rather than arduino? You need to add: # Name, Type, SubType, Offset, Size, Flags nvs, data, nvs, 0x9000, 0x5000, otadata, data, ota, 0xe000, 0x2000, app0, app, ota_0, 0x10000, 0x640000, app1, app, ota_1, 0x650000,0x640000, spiffs, data, spiffs, 0xc90000,0x370000, in a new file "default_16MB.csv" in the same folder as platformio.ini, and modify platformio.ini to add: board_build.partitions = default_16MB.csv build_flags = -DCORE_DEBUG_LEVEL=4 -DBOARD_HAS_PSRAM -mfix-esp32-psram-cache-issue Which fixes the RAM issue and allows using the full size canvas.

+1 for Thonny, works great. Only drawback is that it does not yet have debug functionality for MicroPython.

@timberthrax said in How to get API key for M5Paper?: I haven't been able to figure out how to get the M5paper to boot into upload mode with an api key so I can use it with uiflow. I've searched around the forums and docs without luck. What am I missing? Thanks. M5Pages is not yet supported in UIFLow

@zontex Yes a simple way for users to select which pin is to be used as a capacitive sensing in. Like the digital read pin (pinnum) block but Capacitive read pin (pinnum)