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felmue

UIFlow2 doesn't use API keys. (Only UIFlow1 used them.) Are you sure you installed UIFlow2 firmware onto your M5Stack
device?

Use M5Burner from here to install UIFlow2 firmware (as an example for M5Core2) then use your browser to go to UIFlow2.

M5Burner_UIFlow2.0_M5Core2.png

Thanks
Felix

felmue

Hello @YO3HJV

yes, I measured the current from the battery with this mA-meter and also used the AXP192 registers.

Thanks
Felix

felmue

Hello @YO3HJV

glad to hear you figured it out.

I was just setting up a test to see if I get this 400 mA power loop too with my M5Core2; but I do not.

When I set input mode I see about 82 mA drawn from the battery. When I set output mode I see about 99 mA drawn from the battery. (Note: an LED is connected to the Grove port.)

In case your still interested in my UIFlow2 test program. It's in UIFlow2 Project Zone called: M5Core2_Input_Output_Test_UIFlow2.4.6

Thanks
Felix

felmue

Hallo @Studi97

die M5Stack DAC2 Unit wird ueber I2C angesteuert und soweit ich weiss, unterstuetzen alle M5Stack Cores I2C.

Fuer folgende M5Stack Cores, die hier aufgelistet sind, gibt es Beispiel Programme.

Thanks
Felix

felmue

Hello @studi97

ja, ich denke, das ist machbar; allerdings hat M5Stack, soviel ich weiss, keinen wasserdichten Temperatursensor im Sortiment.

Moegliche Komponenten:

0-10V Steuerspannung: M5Stack Unit DAC2.

Wasserdicher Temperatursensor: DS18B20

Viel Erfolg!

Thanks
Felix

felmue

Hello @Shipbrook

M5Unified uses Wire1 for internal I2C and Wire for external I2C.

The example for SHT40 incorrectly uses Wire which causes issues as soon as other internal I2C communication is required, e.g. reading battery status.

The quick way to fix this is replacing Wire with Wire1 in below line:

//if(!sht4.begin(&Wire, SHT40_I2C_ADDR_44, SHT_SDA_PIN, SHT_SCL_PIN, 400000U))
if(!sht4.begin(&Wire1, SHT40_I2C_ADDR_44, SHT_SDA_PIN, SHT_SCL_PIN, 400000U))

The better way is to get the actual port used by M5Unified for internal I2C and the use that information:

i2c_port_t PortIn = M5.In_I2C.getPort();
TwoWire * WireIn = (PortIn == 1) ? &Wire1 : &Wire;
if(!sht4.begin(WireIn, SHT40_I2C_ADDR_44, SHT_SDA_PIN, SHT_SCL_PIN, 400000U))

Thanks
Felix