Best posts made by Dario

I propose to add Speaker.beep, Speaker.volume and play tone blocks also to Core2

I would like to save my UIFlow program in the cloud (M5 account) or at least in web browser storage.
Like in MakeCode the program is autosaved at every change. The autosave is a very important feature when you work with kids.

Later, when the user open again UIFlow, instead of an empty project he should see the list of his projects and a button to create a new project.

Can you please add also the Speaker.beep, Speaker.volume and play tone blocks to Core2 as well?

I made the Circuitpython porting for several M5Stack devices:
Go to the Circuitpython download page and burn the firmaware directly from your browser

I have made all ports excepts the M5Stamp C3. More are coming!!

I need to record the audio from stick-c internal microphone and I want to use python.
I found a couple of examples that show how to play the audio in python via I2S internal dac:

• Play WAV Files on Your M5Stack
• M5Stack RFID Face Wav Playing Flashcard Program

Instead I can't find anything in python for recordind audio via the integrated microphone. I found an example for Arduino but I don't know how to port it in python.

Can anyone help me?

In UIFlow for Core2 under MediaTrans there are Mir Record and Audio Play sections with serveral blocks. I tried to search a little bit but I wasn't able to find any documentation on these blocks. Can you please point me to the documentation if already exist or else give me some information about these blocks?

In my point of view it would be great to have an M5 core with the ESP32-S2.
The S2 variant has the USB-OTG, and with the right bootloader (TinyUF2 Bootloader), it can expose the internal flash as a USB drive. No more AMPY or custom tools to updload files on the core. We would be able to use the Mu editor on the same easy way as we can do with the Micro:bit.

Last but not least, there is already a port of Adafruit CircuitPython for the ESP32-S2. CircuitPython is very well documented with tons of library alredy written for it.
I find easier to work with CircuitPython than MicroPython.

Let's look for example how CircuitPython handle the audio:

• It use the same libraries regardless of the porting
• It has support for reading MP3 files
• You can choose to use a PWM or an I2S output
• There are plenty of examples

@ajb2k3 said in M5 Stamp C3 -> No Usage in UIFLOW ?!?!:

Correct.
The C3 uses a RISCV core where as the rest of the range uses the ESPcore. The RISCV core has issues with Micropython which is the core of UIFLow.

Currently UI flow use an old version of Micropython that do not support ESP32-C3
The next major release of UIFlow is suppose to suuport ESP32-C3

I have just run in this blog message from Scott Shawcroft. He explains that in 2021 they will probably spend some time to try to create a port of CircuitPython for ESP32-S3 and maybe also a port for ESP32.

I'm crossing my finger hoping to see CircuitPython support for ESP32!!

Core2 has both an I2S speaker and an I2S microhone like the Atom Echo Smart. Can you please add the Echo STT functionality for the Core2 as well?

On the microbit there is this nice feature that use the IMU to detect some gestures or events. For example there is a block to detect if the microbit is falling or if it got hit at different G forces.
This is the microbit makecode block:

I think that it would be nice to have a similar block in UIFlow

I'm trying to use the lvgl canvas on the Core2 with UIFlow V1.7.4.
I'm using the following test program:

import lvgl as lv

lv.init()

scr = lv.obj()
cv = lv.canvas(scr, None)

lv.load_scr(lv)

but when it try to create the canvas it raise the following error:
'NoneType' object has no attributes'__deference__'

Can anyone help me?

@jesuslg123 Sorry I misunderstood tha you were refering at the bluetooth on StickC and not at the at the firmware version. My bad.
No, I can't find the ubluetooth module on StickC

Are you planning to release new Core modules with ESP32-S2?
I like the USB-OTG feature of ESP32-S2, it make way simple to use Micropython and it also open the possibility to install CircuitPython.

I would like to make my own vehicle with four mecanum wheels but there is no M5Stack module that can drive four DC motors.
In this post I would like to ask for a module to drive four DC motor or else a new version of the GOPlus2 with a selectable I2C address.

@iamliubo I'm glad to here that you're going to work on the PaHub problem. I think that is important for the user community to know that there is someone looking at issues and working for fix them. It may takes time to fix an issue but if I know that someone in M5Stack is working on it I'm happy and I can wait.

I found a bug in the firmaware when a programs draws lots of lines and the SD card is plugged in.
This is my test program:

import m5
from m5 import lcd

m5.begin()

def lines_show(color):
    steps = 20
    w = lcd.width()
    h = lcd.height()
    ws = w / steps
    hs = h / steps

    lcd.startWrite()

    for s in range(steps):
        x1 = int(ws * s)
        x2 = w - 1
        y1 = 0
        y2 = int(hs * s)
        lcd.drawLine(x1, y1, x2, y2, color)
        
    for s in range(steps):
        x1 = w - 1
        y1 = int(hs * s)
        x2 = w - 1 - int(ws * s)
        y2 = h - 1
        lcd.drawLine(x1, y1, x2, y2, color)
        
    for s in range(steps):
        x1 = w - 1 - int(ws * s)
        y1 = h - 1
        x2 = 0
        y2 = h - 1 - int(hs * s)
        lcd.drawLine(x1, y1, x2, y2, color)
        
    for s in range(steps):
        x1 = 0
        y1 = h - 1 - int(hs * s)
        x2 = int(ws * s)
        y2 = 0
        lcd.drawLine(x1, y1, x2, y2, color)

    lcd.endWrite()

lcd.fillScreen(lcd.BLACK)
lines_show(lcd.WHITE)
lines_show(lcd.RED)
lines_show(lcd.GREEN)
lines_show(lcd.YELLOW)
lines_show(lcd.BLUE)

If no SD is plugged in the drawing is correct:

If an SD card is inserted the output changes. The drawing appear with wrong colors and and some artifacts (horizontal lines):

@genvex
+1 to ulab in the firmare