Hi, My name is Adam and as the M5Stack community grows everyday I thought I would be interesting to see who is active here and what part of the M5Stack environment is interesting to you the most.

For me is has to be UIFlow as it is the first environment that has allowed me to work with the ESP32 family without major difficulties.

I’m currently working on a UIFlow handbook and some STEM projects.

I have shared a little about me, is anyone else willing to join in?

When you install UIFlow and finish setting up the wifi, the API key will be displayed on the screen along with the mode and the network you have connected the device to.

HY2.0-4P or grove connectors,
VH3.96 for the orange connectors.

@chpaaa1 You will need to rebuild the firmware from scratch as the ESP32's in the Echo and S3 are not the same.
There are enough hardware differences that make them incompatible.

Grove is a standard of cable design created by seedstudio as you have noticed.

It uses a 4 pin JST-PH connector with a 2mm centre between pins.

There are 2 main cables latching and non latching. Latching is used for sensors and actuators that need to be connected to controllers where as non latching is needed to plug into the controller (M5Stack/ SeeedStudio Wio).
You just need to snip the latch off of one end of the cable to plug into controllers or devices tat have the clip covered.

There are also 2 varients of the cable on the market one has the colours Black, Red, White, Yellow, and the other has Black, Red, Yellow, White.

There are however additional Seeedstudio/M5Stack cables that are
Grove 2 Grove,
Grove 2 Stemma,
Grove 2 Dupont Male,
Grove to dupont Female.

You download M5Burner,
Connect the M5Stack,
Select the USB port,
Download the latest firmware version for the M5Stack,
Erase the software on the device with the erase button,
Write the UIFlow version to the device and wait for it to restart,
Close M5Burner,
Open wifi manager and connect to M5 wifi device,
Open web browser and goto the IP address on the screen,
Select your home wifi and type in password (spaces are not allowed in wifi SSID),
If you connect succesfully, the API with be shown on the screen as it tries to connect to the UIFlow web server.

Welcome, It is now 2024 and in China it is the year of the Dragon.
This year's challenge is to use M5Stack products in the garden / greenhouse / farm / or any other place where you may grow things.

M5Stack product a wide range of products for electronic development and design but I have yet to see much use in the agricultural sector.
Throughout 2024 and 2025 (dependent on the seasons) I would like to see what you can make or how you use M5Stack Products to improve or enhance gardening and growing.

There is no formal registration or signup and the only rule is that wherever possible only M5Stack products must be used.
This doesn't mean that only M5Stack products must be used as things like MQTT / IOT servers are required for collecting data or external weather stations for taking reading are acceptable.

The whole point is to use electronics in the garden and have fun.
I can't wait to see what you come up with.

Burning UIFlow2.X Alpha to the AtomS3 https://www.youtube.com/watch?v=2w85U4XwGj4

Where previous ESP32 based products only had one level for writing firmware (I will call this user Space Firmware) the ESP32S3's used in the S3 generation of products use a different access method more akin to the Raspberry Pi Pico based products.

What this means is that there are two USB Drivers needed to be installed in order to fully access and write Firmware to the ESP32S3 series.

The first driver is the JTAG/Series Com driver which allows firmware to be written into the user Space Firmware area and the second is the low lever modem access driver which allows access to the Bootloader level and is also used for making the ESP32S3 devices into HID devices (keyboards, mice, space knobs and joysticks).

Firmwares like the flipper/Maradar makes use of the serial/usb port blocking them from being able to burn new firmwares requiring the need to access the lower level boatload mode ignorer to wipe/burn new firmware.

Through my experiments I have discovered that on windows and linux based machines I have not been able to install the second (modem) driver resulting in the esp32S3 unable to be put into Bootloader mode. Bootloader mode access is shown on the S3 generation models by a green LED lighting up after 5 seconds.

I am still looking into this but I need a new Windows based computer to experiment.

This isn't an issue with the M5Stack products as it works perfectly on MAC OSX based machines and some other Windows/Linux machines used by the more Knowledgeable members. for the moment DO NOT USE the FLIPPER/MARAUDER based firmwares otherwise you will need to replace the StampS3's to continue use.

The Precompiled binary is in the M5Burner firmware burner program along with other precompiled firmwares.

@MCU1536 You cant it just doesn't have the power.
The Core has a custom bistro because the kernel has to be compiled specifically for the CoreMP135 specific hardware setup.

@TomKatt Local UIFlow IDE is V1 and way out of date.
Private means that no one can see it.
Public is for if its sharing data you would like to share with others for example environmental sensors.

@TomKatt Have you looked on Hackster, YouTube and GitHub, I have quite a few guides

@DarshanAtwal As long as you know how to program in micropython You can still use programs like Thonny to program directly.

@DarshanAtwal Use the latest version of UIFlow2 is its just a graphical front ent to Micropython.
There is a console mode in UIFlow2 to directly access the Micropython or you can use a program to directly access Micropython.

@sistar_hh 1
This is normal, as download premaritally set the program to start on boot.
To reset you have to use M5Burner to change the boot configuration.

Yes, OTA only work in test mode (the "> Run" button if you download, wifi is not activated an you will need to manually activate the wifi interface and connect to the target wifi.

@Jules-Vern-Hacker-Man A linux version has been built for the CoreS3 so you may want to look at that but,
The cardputer uses a Microcrontroller not a computer so you will be struggling.

@figgalicous The desktop IDE hasn't been updated in a while. The Web version gets updated weekly.

I'm testing the ENVPro and M5Station for a video guide but between 30 mins and an hour the Station resets with the rolling error log:

E (2903049) mqtt_client: Error create mqtt task
E (2918550) mqtt_client: esp_mqtt_set_config(415): Memory exhausted
E (2918551) event: event_loop was NULL

A fatal error occurred. The crash dump printed below may be used to help
determine what caused it. If you are not already running the most recent
version of MicroPython, consider upgrading. New versions often fix bugs.

To learn more about how to debug and/or report this crash visit the wiki
page at: https://github.com/micropython/micropython/wiki/ESP32-debugging

MPY version : v1.24.0-dirty on 2025-01-18
IDF version : v5.2.2-dirty
Machine     : M5STACK Station with ESP32

Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x4016dee7  PS      : 0x00060030  A0      : 0x8010d60f  A1      : 0x3ffd24b0  
A2      : 0x3ffe1d40  A3      : 0xffffffff  A4      : 0x40111be4  A5      : 0x00000000  
A6      : 0x3f4073a4  A7      : 0x00000000  A8      : 0x00000000  A9      : 0x3ffd2460  
A10     : 0x002c8356  A11     : 0x3f435f7c  A12     : 0xffffffff  A13     : 0x40111be4  
A14     : 0x00000000  A15     : 0x00001000  SAR     : 0x0000000a  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x00000000  LBEG    : 0x40083b51  LEND    : 0x40083b59  LCOUNT  : 0x00000027  


Backtrace: 0x4016dee4:0x3ffd24b0 0x4010d60c:0x3ffd24d0 0x401125a1:0x3ffd26a0




ELF file SHA256: 041d1f64b

Rebooting...
ets Jul 29 2019 12:21:46

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:5128
load:0x40078000,len:15884
ho 0 tail 12 room 4
load:0x40080400,len:4
load:0x40080404,len:3696
entry 0x400805c4

       _  __ _               
 _   _(_)/ _| | _____      __
| | | | | |_| |/ _ \ \ /\ / /
| |_| | |  _| | (_) \ V  V / 
 \__,_|_|_| |_|\___/ \_/\_/  V2.2.1

E (2100) i2c: i2c driver install error
E (2116) time: The current date/time in Shanghai is: Fri Nov 30 20:13:11 2001
E (2978) i2c: i2c driver install error
E (431156) mqtt_client: No PING_RESP, disconnected
E (542578) mqtt_client: No PING_RESP, disconnected
E (573085) esp-tls: [sock=54] select() timeout
E (573085) transport_base: Failed to open a new connection: 32774
E (573086) mqtt_client: Error transport connect
E (573091) M5Things: Last error reported from esp-tls: 0x8006
E (610673) mqtt_client: No PING_RESP, disconnected
E (642541) mqtt_client: No PING_RESP, disconnected
E (764053) mqtt_client: No PING_RESP, disconnected

I've tried enabling gc (garbage collection) to clear the memory each loop but it make no difference and if you check out my code I don't have any MQTT function enabled!

import os, sys, io
import M5
from M5 import *
from hardware import I2C
from hardware import Pin
from unit import ENVPROUnit
from hardware import RGB
import time



label0 = None
rect0 = None
label3 = None
label1 = None
label2 = None
i2c0 = None
rgb = None
envpro_0 = None


def setup():
  global label0, rect0, label3, label1, label2, i2c0, rgb, envpro_0

  M5.begin()
  label0 = Widgets.Label("label0", -3, 10, 1.0, 0xffffff, 0x000000, Widgets.FONTS.DejaVu18)
  rect0 = Widgets.Rectangle(-1, 111, 30, 20, 0x000000, 0xffffff)
  label3 = Widgets.Label("label3", -1, 60, 1.0, 0xffffff, 0x000000, Widgets.FONTS.DejaVu18)
  label1 = Widgets.Label("label1", -1, 35, 1.0, 0xffffff, 0x000000, Widgets.FONTS.DejaVu18)
  label2 = Widgets.Label("label2", -1, 87, 1.0, 0xffffff, 0x000000, Widgets.FONTS.DejaVu18)

  import gc
  i2c0 = I2C(0, scl=Pin(33), sda=Pin(32), freq=100000)
  envpro_0 = ENVPROUnit(i2c0)
  rgb = RGB()
  rect0.setColor(color=0x000000, fill_c=0x33cc00)


def loop():
  global label0, rect0, label3, label1, label2, i2c0, rgb, envpro_0
  M5.update()
  gc.collect()
  label0.setText(str((str('Temperature: ') + str((envpro_0.get_temperature())))))
  label1.setText(str((str('Pressure: ') + str((envpro_0.get_pressure())))))
  label2.setText(str((str('Humidity: ') + str((envpro_0.get_humidity())))))
  label3.setText(str((str('Gas RES: ') + str((envpro_0.get_gas_resistance())))))
  if (envpro_0.get_humidity()) > 60:
    rgb.set_color(6, 0x3333ff)
    rect0.setColor(color=0x330033, fill_c=0x3333ff)
  else:
    rgb.set_color(6, 0x33cc00)
    rect0.setColor(color=0x330033, fill_c=0x33cc00)
  rect0.setSize(w=((int(envpro_0.get_humidity())) * 2), h=20)
  time.sleep(5)


if __name__ == '__main__':
  try:
    setup()
    while True:
      loop()
  except (Exception, KeyboardInterrupt) as e:
    try:
      from utility import print_error_msg
      print_error_msg(e)
    except ImportError:
      print("please update to latest firmware")

I'm at a loss here and wondering if this is a firmware issue.

@mgrouch There is already 2 I2c extenders