I also flashed mine with micropython. To get it back to the factory program that came installed, I connected it to the Arduino IDE, selected Tools > Board: M5Stack-Core-ESP32. Next I opened: File > Examples > M5Stack > Basics > FactoryTest. Upload that to the m5stack and you should be back to the factory program.

If you don't have the M5Stack custom libraries, you can install it from Sketch > Include Library > Manage Libraries... Type m5stack in the filter box, select the result, and install the latest version.

yes, i will change the design. thank you!

try:

#ifdef ARDUINO_M5Stack-Core-ESP32

as is declared in arduino boards:
https://github.com/espressif/arduino-esp32/blob/master/boards.txt#L1169
but this is temporary solution because hyphens are not valid for arduino.

We waiting for some changes...
"issue" is added: https://github.com/m5stack/M5Stack/issues/41

@pkourany Hi, You don't need to enable the PSRAM to run standard sketches in the Arduino IDE.

The Arduino IDE does not act on a low enough level for it to write directly to the PSRAM... you have to use something else like the ESP Flash Download Tool, which is used for example when you load Micro Python onto the M5Stack. Or the ESP-IDF compiler / flashing program....

Both are discussed here:
http://iot-bits.com/esp32/esp32-flash-download-tool-tutorial/

The ESP Flash Download Tool is easier to setup and use than the ESP-IDF compiler / flashing program.

i am sorry that no interupt pin for mpu9250, just link the sda and scl. there are no enough pins from esp32

@lim
All ESP32 applications running on any ESP32 board, including M5Stack are built using esp-idf.
esp-idf is not FreeRTOS. FreeRTOS is included into esp-idf (as a component) and is slightly modified version of the official FreeRTOS (see esp-idf documentation).
The mentioned drivers are not the part of the esp-idf, but are built on-top of esp-idf and uses the esp-idf API.

@zazar
Ah yes - sorry - forgot about that note ..... that is right. Perhaps you could order a battery module ? They are handy to have.

@suslikman

I am using M5Stack with Windows 10 - 64 bit on 3 different systems and M5Stack works fine on all. No issues.

On one machine originally the drivers did not install correctly - though it wasn't obvious at the time.

To check driver installation worked correctly:

Dis-connect M5Stack from PC if connected. Turn up PC volume. Open device manager. Connect M5Stack using USB cable.... once M5Stack is connected, you should hear a Windows sound - "bing""- and now in the device manager a new item should magically appear called "Ports” Click on it – it should show the Silicon Labs driver listed.

If not , you need to re-install the driver - make sure Python is on your Windows path. You can verify the path is working by opening command prompt and typing - python.

Are these files (below) available after you have Python installed and after you run get.exe ? They should be.

0_1517497909581_b38be06f-ed2b-41d4-8a75-15e3897fa55b-image.png

u can order by jimmyLai@m5STack.com. the same price of the psram for u, PayPal is both okay, and the Gpio16/17 are used by PSRAM, so it is not available to use the serial2 when psram is running.

@snmcma 在 Stack is dead :( 中说：

@m5stack 在 Stack is dead :( 中说：

you mean Arduino?

Yes, Arduino

can throw off the firmware file for overwriting in m5? and a screenshot how to write down

you can throw off all the firmware files with the instruction how to return to the initial state, micropyton does not suit me. I reprogrammed it as an esp32 dev module, unfortunately in m5stack mode it is not programmed

no serial1, m5stack offer serial0 and serial2

If you do not have a capacitor available, you can also try to set the "Upload Speed" to 115200 in Arduino IDE.
Of course the uploads are longer, but it did the job for me : i did not have any upload error since

I also installed the latest CP210x Windows driver (v10.1.1 for Windows 10) but i don't think this is necessary

Can you convert the pcbdoc to version 5 (so it is compatible with EasyEDA) or to another more open format. Few of us have Altium

Im get it. Thanks! Now im succesfull connect it via Wi-Fi to my sensor (sensor=mpu6050+esp12). There are was some problems with UDP connetions but now solve it.

Hi,

It is a built-in function of PMU. One pressing will only reset the ESP32, double pressing will be treated as power off, so the PMU will directly cut-off the MCU's power. We may supply modifying such functions in the future hardware releases.