@erich

Here's the FCC submission for M5StickC Plus 2 include internal and external photos:

https://apps.fcc.gov/eas/GetApplicationAttachment.html?id=6654502

Apparent differences to M5StickC Plus 1.1:

• AXP192 is removed as it is end-of-line
• Magnet is now one small disc instead of two small bars
• battery lead is socketed
• now one board instead of two
• IC is ESP32-PICO-V3-02 instead of ESP32-PICO-D4 (now doesn't support external PSRAM, not relevant though). PICO-V3 has extra pin 20 for internal use.
• 200mAh battery instead of 120mAh
• Not clear where the buzzer is or whether there is no buzzer - not on the inside back as per M5 Stick C Plus.
• The rear sticker shows a few differences in internal GPIO pin allocations.

The twitter post @gavin67890 linked to says its been delayed due to some further changes though.

Are we permitted to use the M5 Stack logo in our projects? I mean specifically as a label on the outside of the product like I have done for Blue Robotics in the hackaday project linked below and in the photo attached. The logos showcase the technologies used in the product.

I am using not one, not two but three M5 Stick C Plus cores in this project! I want everyone to know that it's powered by M5.

https://hackaday.io/project/190591-mercator-origins-sat-nav-telemetry-for-divers

Please check out and follow my new project on hackaday. It uses not 1, not 2 but 3 x M5 Stick C Plus cores!

https://hackaday.io/zxfan

Thank you so much!

Mark

Thanks @teastain. Is there an API to tell what the 5V In voltage is from the HAT? I use the USB voltage to work out if the power has been cut so that I can automatically shutdown the device instead of using battery power. I wonder if this can also be done through the HAT power in...

I've given up on this, now powering it direct from USB instead of HAT.

@bazman Fix is to delete the line! Both the microphone example and the factory test project then work.

Line 438 in M5StickCPlus\examples\FactoryTest.ino and line 55 M5StickCPlus\examples\Micophone.ino has a compile error on the line marked ----> below

i2s_pin_config_t pin_config;
#if (ESP_IDF_VERSION > ESP_IDF_VERSION_VAL(4, 3, 0))
--------> pin_config.mck_io_num = I2S_PIN_NO_CHANGE;
#endif
pin_config.bck_io_num = I2S_PIN_NO_CHANGE;

The error is:

C:\Projects\ArduinoSketchbooks\GPS-Mic-Test\GPS-Mic-Test.ino: In function 'bool InitI2SMicroPhone()':
GPS-Mic-Test:438:16: error: 'struct i2s_pin_config_t' has no member named 'mck_io_num'; did you mean 'bck_io_num'?
pin_config.mck_io_num = I2S_PIN_NO_CHANGE;
^~~~~~~~~~
bck_io_num

...
exit status 1
'struct i2s_pin_config_t' has no member named 'mck_io_num'; did you mean 'bck_io_num'?

Great ! Thanks @flypeek

This is in Chinese for M5 Stick C. Does anyone have a URL or the PDF for the english version of this document and for the M5 Stick C Plus English manual equivalent?

https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/M5StickC_Guide.pdf

Thanks

I want to build a receiver of Infra-Red to detect transmission of IR from M5 Stick.

What is the transmitter diode used in the unit? I need to know the frequency response and the infra-red band that is transmitted.

The best info would be the actual manufacturer and part number in the M5 stick.

Thanks!