Have you tried searching the internet, there are loads of guides on how to compile code.

Subsequent investigations revealed that the initialization error was due to a physical connection issue. Initially, I didn't pay much attention to the fact that the M5Stack did not come with screws to secure its bottom, but after using my own screws to fasten the USB Host Shield (M5STACK-M020) in place, Usb.init() began to succeed. I apologize for any inconvenience this may have caused and appreciate everyone's patience.

Core2 use a CP2104/CH9102F chip for USB-UART communication over USB. Your PC will see a UART (serial port) device (like the good old RS-232) not a midi device. To solve your problem you need either a piece of software on your PC that emulates a MIDI interface and route the data from UART or a piece of hardware that act as USB MIDI interface and is connected to your Core2 by GPIO. It might also be a solution to send MIDI over the (Wifi-) network.

Hello @yranolv

maybe check out this project?

Thanks
Felix

@firoozeh one reason a screen will turn black after uploading code is because your code does not contain graphical elements.
When using M5BURNER you must use the correct firmware for the core.
There are three main cores the core, core2 and coreS3. All three have different firmware and for your unit you must erase and use the Core, Go and fire only firmware

To control the speed of a 180-degree steering gear in UIFlow, you'll typically be working with a microcontroller like the M5Stack or a similar device. UIFlow provides a visual programming environment that allows you to write code using blocks, similar to Scratch, or you can use Python. To control the speed of the servo, you'll need to adjust the pulse width or angle in your code.

Here's a step-by-step guide on how to control the speed of a 180-degree steering gear in UIFlow using blocks:

Set up your hardware:
Make sure your 180-degree steering gear is properly connected to your microcontroller. Typically, you'll connect the signal wire to one of the PWM (Pulse Width Modulation) pins on your microcontroller.

Open UIFlow:
Launch the UIFlow software on your computer.

Create a New Project:
Start a new project or open an existing one, depending on your needs.

Drag and Drop Servo Blocks:

Go to the "Servo" section in UIFlow's block palette.
Drag and drop the "Servo Write Degree" block into your workspace.
Configure the Servo Block:

Connect the servo block to an event or trigger, such as a button press or a timer.
Set the servo pin to the PWM pin you connected your servo to.
Set the degree value to control the position of your servo. This is where you control the speed.
To control the speed, you can gradually change the degree value from its current position to the desired position over a certain time. For example, if you want the servo to move from 0 degrees to 180 degrees gradually, you can use a loop and increase the degree value in small increments with a delay in between. This delay will determine the speed of the servo.

Upload and Run the Code:
Upload your code to the microcontroller and run it. You should see your 180-degree servo move according to the specified degree values, controlling its speed by adjusting the delay between position changes.

Here's a simple example of how you might control the servo's speed using UIFlow blocks:

*# Example UIFlow blocks
from m5stack import *
from m5ui import *

servo0.write_degree(0) # Start at 0 degrees

for degree in range(0, 181, 10): # Increase by 10 degrees
servo0.write_degree(degree) # Set the servo position
wait(0.5) # Adjust the delay to control speed*

This example will gradually move the servo from 0 to 180 degrees in 10-degree increments with a 0.5-second delay between each movement. You can adjust the delay to control the speed as needed.

Hello @iketaki

you are welcome - I am glad to hear it worked for you. And thank you for letting me know.

Thanks
Felix

Some websites indicate the need to obtain Bluetooth certification.

I am aware of the high cost of registering a product when rebranding, even when incorporating a product that already has Bluetooth certification.

I would expect that if one does not use the Bluetooth patent and logo, one does not need to obtain Bluetooth certification, but I do not know how to avoid using the Bluetooth patent.
Is the Bluetooth patent included in the hardware or in a specific library?

Bluetooth SIG : Bluetooth Qualification Process Overview
https://www.bluetooth.com/develop-with-bluetooth/qualification-listing/

Do I Need to Qualify?
https://support.bluetooth.com/hc/en-us/articles/360049018272-Do-I-Need-to-Qualify-

Bluetooth認証の必要性とSIG認証のための工数・費用の削減する方法とは？
https://www.tjsys.co.jp/embedded/netnucleus-bt/bt-certify-costcut.htm

Thank you for the advice.
and, I'm very sorry.
the connection and sketch I indicated was wrong.
confused.

Finally I reffer and correct information are here.

Maybe, it is almost dead copy of the refference page.

https://lang-ship.com/blog/work/m5stickc-spi-sd-3wire/

M5StickCPlus >>>> SD
3V3 >>>> 3V3
GND >>>> GND
0 >>>> CLK
36 >>>> MISO
26 >>>> MOSI
GND >>>> CS

#include <M5StickCPlus.h> #include "SD.h" SPIClass SPI_EXT; // PIN配置 enum { spi_sck = 0, spi_miso = 36, spi_mosi = 26, spi_ss = -1 }; void setup() { // M5StickC initialize M5.begin(); M5.Lcd.setRotation(3); // SPI initialize SPI_EXT.begin(spi_sck, spi_miso, spi_mosi, spi_ss); // SD initialize if (!SD.begin(spi_ss, SPI_EXT)) { M5.Lcd.println("Card Mount Failed"); return; } // SD check uint8_t cardType = SD.cardType(); if (cardType == CARD_NONE) { M5.Lcd.println("None SD Card"); return; } M5.Lcd.print("SD Card Type: "); if (cardType == CARD_MMC) { M5.Lcd.println("MMC"); } else if (cardType == CARD_SD) { M5.Lcd.println("SDSC"); } else if (cardType == CARD_SDHC) { M5.Lcd.println("SDHC"); } else { M5.Lcd.println("UNKNOWN"); } // SD volume uint64_t cardSize = SD.cardSize() / (1024 * 1024); M5.Lcd.printf("SD Card Size: %lluMB\n", cardSize); } void loop() { }

There have been issues with the V-Training system provided by M5Stack that they haven't been able to fix.