Hello @udafff49

sorry if I was unclear. You can not use GPIO 16 and GPIO 17 with M5Stack Fire. Those two GPIOs are internally used for the PSRAM. Please see here.

You need to use a different pair, for instance GPIO 5 and GPIO 13, adapt the sketch and change the dip switches on the COM.GSM module accordingly.

Thanks
Felix

Hello @udafff49

ok, which GPIOs are you using for TX and RX? M5Stack Fire uses GPIO 16 and 17 internally, so you'll need to switch to a different pair of GPIOs.

From the view of the COM.GSM module TX can be 16, 5 or 15 and RX can be 17, 0 or 13.

Whatever pair you choose you'll also need to adapt those two lines in the sketch:

#define TX_PIN 16
#define RX_PIN 17

Thanks
Felix

Hello @TL

it looks like drawPng() needs the actual length of the array. Try something like this:

void loop(void)
{
  int length = sizeof(png) / sizeof(png[0]);
  display.drawPng(png, length, 0, 0);
  delay(1000);
}

Thanks
Felix

Hello @Tomarno

PaHUB is an I2C extender allowing multiple I2C devices (using the same I2C address) on the M5Core2 I2C port A.

Unfortunately neither of the two units you are trying to connect are I2C devices.

UHF RFID reader unit is an UART device and NeoPixel requires dedicated GPIOs as the timing needs to be quite accurate.

From UIFlow I understand that you could connect NeoPixel to port B and UHF RFID reader to port C. But you'll need an M5Go2 battery bottom to get port B and port C.

If you want to try out either of the two units, they can be connected to port A, but only one at that time.

Thanks
Felix

Hello @udafff49

1. which M5Stack device are you using? M5Stack (Basic, Gray, Fire) or M5Core2?
2. can you share the log file with the errors?
3. have you double-checked the SIM card you are using works with your provider in your region? (You can check with a mobile phone.)
4. have you double-checked the SIM card doesn't have a PIN set? (Again, you can check that with a mobile phone.)

Thanks
Felix

Hello @wwhite

you'll need to click onto the [+] button (on the left, below M5Paper) and add the RFID unit first. Then it will show up in the Units menu.

Thanks
Felix

P.S. If you do not see the [+] button you could try with a different browser. I have the best UIFlow experience with Chrome.

Hello @sgnp2091

do you mean disable by software or hardware?

The way M5StickC Plus is wired internally I don't think it is possible to disable this functionality by software, but I guess it would be possible by a hardware modification.

Thanks
Felix

Hello @jvm

open the files Ethernet.h and EthernetServer.cpp, then search for the commented out lines and replace those.

Since you are using an M5Core2 you'll also want to adapt the SPI pins as they are slightly different between M5Stack and M5Core2.

M5Stack uses:

#define SCK  18
#define MISO 19
#define MOSI 23
#define CS   26

M5Core2 uses:

#define SCK  18
#define MISO 38
#define MOSI 23
#define CS   26

Please also refer to this GPIO comparison sheet I've compiled a while ago.

Thanks
Felix

Hello @amxd55

if you have a look at the sticker on the back of M5 CoreInk you'll see that 3.3 V and 5 V OUT are powered by USB or battery. I'd use a multimeter to measure between 5V OUT and GND. It should read 5 V in both cases - USB or battery. If on battery the 5 V are not there then maybe the battery is flat?

Thanks
Felix

Hello @DavidoZ

why don't you try the provided example?

Strictly Serial.begin() isn't needed in setup() as M5.begin() already takes care of that. And for the communication with the SIM7600 you'll need to open Serial2. See above example.

Thanks
Felix