Best posts made by JJ

@kryten

HI Kryten,

I believe this should be possible although some changes need to be made to the code to make it M5Stack compatible.

Also perhaps not all functions are available yet for the ESP32 chip itself (& thus also the M5Stack).

For example, re. Arduino core for ESP32, analogWrite is not available yet but is being worked on.
However apparently most of that framework is available. See:
https://github.com/m5stack/azure_iothub_arduino_lib_esp32/blob/master/hardware/espressif/esp32/README.md

Perhaps someone else can add more to this....

Check the link below to visit the EXCELLENT "macsbug" blog for an example of changes made to esp32 code to make it run on M5Stack...... ( esp32-spaceshooter ) . Most changes are minor.

Use Chrome if you need it translated from Japanese, otherwise it may be hard to read. : >

https://macsbug.wordpress.com/2018/01/12/esp32-spaceshooter-with-m5stack/

@pelocks @zazar
Hi, you can use these two functions:

M5.setWakeupButton(BUTTON_B_PIN);
M5.powerOFF();

...as demonstrated in Tom Such's menu system which is discussed in the link below:
http://forum.m5stack.com/topic/78/m5stack-simple-applications-menu-some-apps

If you open the code in Arduino, those functions are used on the "system" tab not the main tab that it opens to. You have to select it.

There is also a handy list of functions here: https://github.com/Kongduino/M5CheatSheet

@reaper7 Hi Reaper7,

Pretty awesome looking work there !! Thanks for putting the link up.

I loaded the code up but unfortunately I don't have an Owon to test it further..... Certainly tempted.....

Here is photo of it in action from Reaper7's github page:

@km4hpk Hi,

This may be of interest to you - includes youtube video demo (with some sound) and an audio surprise at the end !

https://twitter.com/TobozoTagada/status/972845518966743040

@reaper7 @dda

Nice work dda !

Reaper those gui slice screens look awesome !! Glad you added M5Stack support and thanks for pointing them out

@dda So it is the "shut up"function ! ha ha

@daslolo

Expanded capability - now and in future.

Main use now would be MicroPython, which benefits from the extra memory. But it has also been utilised to run Doom on the M5Stack.... Also, some amount (?) of PSRAM is required to run the just released ESP-ADF (ESP Audio Development Framework).

There are probably other applications too. Anyone else got any examples where the PSRAM is utilised ??

AFAIK - You need to use ESP-IDF or Platformio to use it.

@dimi
Hi, thanks Dimi.
Downloaded... flashed to unit... works well !! Cheers.

@tomsuch
Wow ! Nice menu system. Exactly just what was needed. Look forward to seeing how it develops over time...

@tomsuch
Awesome... all wifi scanner functions working perfectly - thou i couldn't test the page function due to lack of networks... excellent work Tom !! Thanks for making it happen.

@zazar
Hi Zazar,

You can buy the headers only without a module - check this tiny link:

https://www.aliexpress.com/item/M5Stack-Official-Stock-Offer-2x15-Pin-Headers-Socket-2-54mm-Male-Female-4-Pair-Connector-for/32840923472.html?spm=2114.search0104.3.78.61507c19ojtq2L&ws_ab_test=searchweb0_0,searchweb201602_2_10065_10344_10130_10068_10342_10547_10343_10340_10548_10341_10084_10083_10618_10307_10131_10132_10133_5722315_10313_10059_10534_100031_10103_441_10624_442_10623_10622_10621_10620_10142,searchweb201603_1,ppcSwitch_5&algo_expid=56b88502-d768-4ad0-aa15-218c54ae63df-11&algo_pvid=56b88502-d768-4ad0-aa15-218c54ae63df&transAbTest=ae803_4&priceBeautifyAB=0

@buhi

Hi Buhi,

This is what's available so far.......
https://github.com/m5stack/M5-hardware
https://www.thingiverse.com/thing:2754642
http://forum.m5stack.com/topic/59/diy-mini-proto-board

@dda
Hi, re. your original question, have you seen the excellent mod that reaper7 added recently ?
http://forum.m5stack.com/topic/85/m5stacksam-application-menu-library/4

@dda !

++

Thanks Dimi..... got it working fine.

@andi Hi Andi, welcome!

With the M5Stack range there is the base or core unit with the screen etc and then there are the add-on modules, which can be purchased separately.

The pic below shows a PCL (programmable logic controller) module for the M5Stack that supports Can and RS-485. It hasn't been released yet - the pic was posted on twitter Jan 24 2018. Seems like release might not it is too far away... Presumably support will be added then. A brief PLC test video as per pic below has also been tweeted...

I don't see any reason why the current model M5Stack with 4 MB PS-RAM would not support the PLC module.

Micro-python uses the PS-RAM, but general sketches run without needing it.... eg: the earlier model does not have PS-RAM it and runs many sketches. For example, arduino & ESP8266 devices are quite capable despite no PS-RAM.

Watch twitter @M5Stack for product announcements.

Store link via: www.m5stack.com

@andi
Hi Andi, I hadn't noticed that one had CAN right on the GPIO like that.....

This appears to be a early design featuring use of the ESP32..... various things have changed since then... including the M5 bus as I'm sure you're aware.

I have not see this model in the wild.... maybe some were produced in small quantities - I don't know. Anyone ?

I would guess that the board design was updated before release of the current range of models.

Is there anything stopping you from using the new PLC module for your application? (Mentioned again in twitter today). Or was it mainly the convenience of having the CAN built into the main unit, without the need for an extra module ?

Here's the current M-BUS layout for those playing along at home.... wanting to compare:

@dimi Hi Dimi,
Thanks - great lesson ! Very useful. Well documented ! The screen display asking for the TF card is a good addition.

@jcsbanks Hi JC,

If you plug the M5 into usb when the M5 is off, the M5 will power on without pressing the on button.

Powering from the headers is not recommended - github: https://github.com/m5stack/M5Stack/issues/29

The schematics listed online are for the recent model you ordered - with 4 Mb PS-RAM and MPU9250.
http://m5stack.com/download/M5-Core-Schematic(20171206).pdf