@kuriko 试了2.4.2现在没有问题

Hello @drvval

BLDO2 controls the 5 V boost circuit.

When M5Core2 v1.1 is powered on, code in M5Unified library checks whether there is external 5 V power available (from M5Bus or Grove port).

If yes, the boost circuit is turned off, and M5Core2 is running from external power.

If no, the boost circuit is turned on (and consumes power) and M5Core2 is running from battery or USB.

Note: why, when running from USB or battery, turning the boost circuit off manually prevents ESP32 from waking up from deep sleep is not entirely clear to me.

In order to go lower you could try to power M5Core2 via 5V on the M5Bus or Grove port. And without USB connection.

(Testing gets a bit tedious this way, as one constantly needs to switch between USB for programming and external power for testing.)

Using external power via M5Bus (but without PIR connected) my M5Core2 v1.1 in deep sleep only consumes about 2.9 mA.

Thanks
Felix

To anyone trying something similar in the future

MODULE_4IN8OUT module; MFRC522_I2C mfrc522(0x28, -1, &Wire); void setup() { M5.begin(true, true, true, true); Serial.begin(115200); delay(500); Serial.println("Starting setup..."); M5.Lcd.println("Init..."); // POWER MANAGEMENT dla Port A (RFID) M5.Axp.SetBusPowerMode(0); M5.Axp.SetLDOEnable(2, true); delay(200); // --- I2C BUSES --- Wire.begin(32, 33, 100000); Wire1.begin(21, 22, 100000); delay(100); M5.Lcd.println("Init 4IN8OUT..."); // Start module 4IN8OUT if (!module.begin(&Wire1, 21, 22, MODULE_4IN8OUT_ADDR)) { M5.Lcd.setTextColor(RED); M5.Lcd.println("4IN8OUT INIT FAIL"); Serial.println("4IN8OUT INIT FAIL"); while (1) delay(1000); } M5.Lcd.setTextColor(GREEN); M5.Lcd.println("4IN8OUT OK!"); Serial.println("4IN8OUT OK!"); M5.Lcd.setTextColor(WHITE); // Init RFID mfrc522.PCD_Init(); M5.Lcd.println("RFID OK!"); Serial.println("RFID OK!");

Hi, @aliense44. I have a Card Computer ADV, a GPS/LoRa module, and an ENV III Sensor. I was trying to test the ENV Monitor ADV app, but it didn't display any information. Could you tell me how to connect it for it to work with the app? Thank you.

@johnericsutton hard to believe that unit is designed in such way to report value only when measured source is above 0...

@andyzot so you can't find location where downloaded firmwares are stored on MAC?

m5burner_firmware0.JPG

see Win10 example

@TimmyProgamsStuff I'm glad about that. Have a lot of fun

Check the main menu or dashboard after logging in, usually the actual working page is under Home or Dashboard, not Tutorials. If you tell us what you’re trying to access, someone can point you directly.

@felmue
Thank you for the clarification.
Yes, it seems that internal pull-up/pull-down resistors cannot be controlled at the moment.
I also checked the documentation, but could not find any way to configure this, which is why I posted the question here.

I hope this feature can be supported in the future, as it would be very useful in practice.

Thanks again for sharing your experience.

@kuriko SN: C12625050101908

4e9f2ec2-abb0-4f9a-897c-0ecec8711f33-image.png

Hi, I encountered a similar issue. When the QR code reader is in auto-scan mode, if the barcode is scanned more than once while the main program is in a delay state (e.g., 5000 ms), the barcode reader stops responding after the delay ends, and the data can no longer be read. I also tried reading the barcode from the image in the previous post, but nothing changed.
Additionally, I have confirmed that communication is restored and the device becomes usable again by unplugging and reconnecting the I2C cable. Is it possible to reset the barcode reader programmatically?

@felmue good to see approach to hat connector changed to be on ribbon and can be disconnected

@gizmologic so in short words what you need is convert m5dial encoder to 0-10v signal and operate exernal relay with screen button right? what is your code so far?

@Micaelaman @torrix
Please notice that Core2 has 2 diffrent versions of PMIC chip, AXP192 and AXP2101. Make sure you are initialize PMIC correctly.