Posts made by bazman

@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!

The M5StickC-Plus is being powered through USB.

The grove port is in use, connected to a temp/humidity sensor (Adafruit AHT20) and magnetometer/accelerometer sensor (Adafruit LSW303AGR).

I am connecting an RS485 board (using a MAX485 IC) to the HAT pins, but the 5V output is only at 1V.

Any ideas? Does the 5V output have to be enabled in code?

I ordered another C-Plus today and got the v1.1 revision as expected. There's a difference on the label - Sleep/Wake has been added next to the RTC box, see below. I would like to know what the relevance of this change is.

(I originally posted in General forum but had little response, here is probably more appropriate)

There was an update in December 2021 to M5StickC-Plus that is reported on the C-Plus docs page as:

"Added hibernation and wake-up functions, and changed version to v1.1"
from: https://docs.m5stack.com/en/core/m5stickc_plus

I have the original M5StickC-Plus. Are the changes to v1.1 related to new hardware, new firmware or new libraries? Can these new functions be used with the original M5StickC-Plus through an update? Can you link to the documentation for the changes too?

Thanks

Mark

Anyone found out the differences between 1.0 and 1.1 for M5StickC Plus ?

The original StickC Plus with the larger screen. The release info is at the bottom of this page: https://docs.m5stack.com/en/core/m5stickc_plus

There was an update in December 2021 to M5StickC-Plus that is reported on the docs page as:

"Added hibernation and wake-up functions, and changed version to v1.1"

I have the original M5StickC-Plus. Are the changes to v1.1 related to new hardware, new firmware or new libraries? Can these new functions be used with the original device through an update? Can you link to the documentation for the changes too?

Thanks

Mark

I can't find a way to detect a momentary press of the power button on the M5StickCPlus, only button A and button B detection is described. Is there any way to do this in C++?