Interesting from UIFlow2.0, is there a similar global? control for bus speed in UIFlow v1.12.4?

Hello @DanK actually there is an AMS1117 version with exactly the output voltage you measured: 2.85 V - coincidence? From the AMS1117 datasheet - feature list: Three Terminal Adjustable or Fixed Voltages* 1.5V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V But yes, the input voltage is probably on the low side. Thanks Felix

@gavin67890 In M5Tough, there is an external board called M5Tough EXT board in which we connect the 24VDC supply. This 24VDC supply is then converted to 5VDC and then it goes to ESP32 through the 5VDC pin on the main board. If i dont make the output_power = false, then the 5VDC pin stays high on the main board and also on the EXT board (from external supply) which does not allow ESP32 to switch on. So if we make it false, then the main board 5VDC output becomes low and then it can be driven by the external supply from the M5 Tough EXT board. This is the only way to power up the M5Tough using 24VDC supply. I am not sure about core2 though. Now i figured that in this scenario, the UART doesnt get disabled. It keeps working, but the sensor communication doesnt work. To my surprise, if i disconnect the sensor while the power is on and reconnect it, the sensor start communicating. I feel that somehow, ESP32 doesnt like that the sensor is powered up before the ESP32 is initialized as both the sensor and ESP32 are getting powered by the same external 5VDC supply. Now the only option for me is to setup a GPIO pin to drive a mosfet which would then power up the Sensor after ESP32 is initialized. But i feel there must be a much simpler way to do this via programming.

@haavardmk I dont know the answer to your question., I am experimenting to see which GPIO I can use. I made a small program on my coresS3, to use gpios 10 and 5 with the rotate/angle unit, and it "works" but hangs oddly for a logn time every several measurements. No idea if that is because GPIO10 is meant to be a "BUS ADC" with some special quality, or some other odd software thing. But it is likely something abuot my device, as I am using wires soldered inside to the 5v pin, GND and the two bus gpio pins on the inside of my DIN base, and gpio10 has its own weird little offset pin on the DIN base pcb

I managed to get the Arduino UI running with the CORE2 (using the M5Unified 0.1.9 and the Sensirion I2C SCD4X 0.4.4 libraries). I took the example ino file and modified the header to use M5Unified.h instead of M5stack.h... and the problem seems to be there as well. The first call to scd4x.stopPeriodicMeasurement() returns an error saying: Error writing to I2C bus. Then it hangs apparently on the subsequent scd4x.startPeriodicMeasurement() call, for what I can say.

@gavin67890 Thanks Gavin, i will have a play when i get a chance, shame really as i was looking forward to a larger screen on the M5 but if nothing else i now have something else to play with!!

@gavin67890 Thank you again, very much appreciated

@teastain Hi Terry, et al thx 1M for your effort helping me! I've just found the work around: As per "M5Stack Library won't install on Arduino IDE", CitrusPeel identified the issue: The package's name "MODULE_GRBL13.2" in library.properties should be "MODULE_GRBL_13.2" (underline instead of space before 13.2). So download M5Stack unzip it edit file "library.properties", line to "depends=M5Family,M5Module-4Relay,MODULE_GRBL_13.2,M5_BMM150" zip it and install zipped library restart IDE update now performed flawless @m5stack: awaiting M5Stack (0.4.6) to be released soon, as not all users having the knowledge on how to apply this "patch". Cheers, Marcus

I found it, on my installation, it is actually a submenu of the extreme right icon Thanks again, you put me on tracks

@bram The EN is the Reset input and is pulled up normally, and brought down to reset the ESP. While it does seem odd that it is 5V, mine does the same thing! My (ahem) LilyGO T-Display S3 Reset pin is at 3.3, which makes more sense. -Terry

Thank you very much for your reply! I will look into UI Flow.

You need two devices, one set as AP and one as STA for it to work. What error are you getting when set to STA?

Hello @GAZZZ6 I didn't realize you are looking for an UIFlow solution. UIFlow has a configuration flag which allows to connect via modem instead of WiFi. However that option only seems to be implemented for M5Stack devices with can stack COM.X modules. I've tried to enable that option for M5Station, but it is ignored and the connection goes through WiFi still. Thanks Felix

@alan-zhang said in SIM7080G Module speed and stability: I've tested the SIM card from a phone and it's 1MB/s download and upload. Your phone might be using 3g/4g/5g/LTE and not NB-Iot or Cat-M. In fact Ive never seen a phone that uses NB-Iot or Cat-M (Doesn't mean they might not exist though) M5Stack does sell an LTE module if you want LTE speeds though.

@felmue This is how I de-bound devices.

SOLVED. Controlling LCD voltage directly works like a charm. Thanks Felix :-)