M5Stack RoverC controlled with M5StickCPlus , via ESP_NOW RemoteControl:
https://github.com/teastainGit/RoverC-StickCPlus-ESP_NOW-Remote-Control

But with no JoyC, just using the second StickCPlus IMU as a 'wand' to control the Rover.
This Project requires 2 M5StickCPlus Controllers:
https://docs.m5stack.com/en/core/m5stickc_plus

or the new M5StickCPlus2:
https://docs.m5stack.com/en/core/M5StickC PLUS2

controllers or a mix of either, but with suitable mods, mostly the include header:

@hanktttop OK. I'm wading into this discussion without having a Cardputer!
My other ESP32-S3 and M5Stack Atom S3 and several StampS3s all work very well in my Arduino IDE environment. I also have a bunch of S3 products from a manufacturer whose name cannot be said. (coughs into hand...T-Display S3).
So I am familiar with this S3 series on a M1 iMac.
My iMac has two Thunderbolt ports and two USB ports. I used the USB ports just fine for M5Stack-pre-S3-models, but the S3 models wont even power up on USB, they need the Thunderbolt outputs.
So, get to the point, teastain.
Connection is VERY fussy and unpredictable with S3.
All of the M5Stack S3 products that I have seen have both of the necessary buttons available. The Cardputer even has them at the front(!) no need to remove the S3 or peel back the sticker on Cardputer. (in fact DO NOT remove the S3 with Cardputer!)
The GO button is actually GPIO 0 and is called 'boot'.
The 'rst' button is otherwise called 'EN' which cuts power to the core when pushed and resets when released.
Method 1 unplug the Cardputer from the USB, press and hold G0 (on the left side of the Cardputer, plug back in and release G0.
Method 2 while plugged in press and hold G0, press 'rst' on the right side, release 'rst', then release G0.
In both cases if your sketch does not boot up and run, it is recommended to unplug it and plug it back in to boot.

@ajb2k3 Sure, here it is:

Here is the full example for all ESP32s using the OV2640 camera in Arduino IDE
(in the IDE board selection choose M5Stack UnitCamS3)
Remember to edit the .ino file to include your WiFi credentials!

The full sketch is here:
 https://github.com/espressif/arduino-esp32/tree/cf448906b3836fbe9368934713b697469254c62f/libraries/ESP32/examples/Camera/CameraWebServer

You can choose CAMERA_MODEL_ESP_EYE, and apply a little tweak in camera_pins.h like this: 
https://github.com/m5stack/UnitCamS3-UserDemo/blob/main/firmware/src/hal/cam/camera_pins.h#L21

Also in the library used in your sketch
app_httpd.cpp
I had to change Line 77 from ('1" enabled) to ('0' not enabled )

#define CONFIG_LED_ILLUMINATOR_ENABLED 0   

Successful upload serial output reads like this:

20:48:24.952 -> E (516) esp_core_dump_flash: No core dump partition found!
20:48:24.952 -> 
20:48:24.952 -> ......
20:48:24.952 -> WiFi connected
20:48:24.952 -> Camera Ready! Use 'http://192.168.0.37' to connect

@ajb2k3 I really like the idea of REPL !

MY(!) aging brain is resisting learning a new programming language.

In the (late) 70's I programmed in machine code and felt C was a "high level language".

I will investigate Python, could be fun!

Cheers to all.

Hi, I have a Core Basic HVAC program communicating with two Stamps using ESP_NOW and they are physically close, but the idea was to not run messy cables! The ESP_NOW is peer to peer WiFi, but no login to the internet or even the WiFi router.
One Stamp reads the HVAC vent temperature and reports to the Core, which in turn calculates the damper vane angle and transmits that back to the very same Stamp connected to a 180 servo motor.
The other Stamp just operates one or two small under desk heaters as required, by the Core.
Hope this helps.
Terry

@coolman626 This is sadly a confusing aspect of Arduino IDE V2...a "feature" that guesses your board as a "convenience" and it's always wrong.

In the search box start typing M5Stack until you see your board!

Really no big deal!
-Terry

@mhuis M5Stack uses 5V on the grove cable to cover all bases!
Most sensors today are 3.3V, but if one is still 5V, it will work.
Then any M5Stack brand sensors will have a step down power converter to it's internal 3.3v requirement.
The I2C is 3.3v.
The 8 Encoder is 3.3v. on the inside (STM microcontroller).
No logic level converter is needed.

@felmue "For testing integrity" I'm using the github EXT.IO Zip download and running the DIGITAL_INPUT_OUTPUT example right from there and then later from my Arduino directory, after checking that both Libraries M5Stack And EXT_IO are up to date.
Note, stubbornly I am using Arduino 1.8.19.
The Example would not run until I added Wire.begin(21, 22); delay(1000);
Seriously. I take it out and the sketch throws errors.
I am also disappointed that setPinMode "came and went".
I am becoming discouraged with M5Stack, unfortunately.

@mtylerjr The Core Basic has 15 GPIO peripherally arranged in the battery base, as well as generous grounds and voltage options.

@lordryck They are called Grove and are the standard for most M5Stack products.

https://shop.m5stack.com/pages/search-results-page?q=grove cable

Also used by Seeed products.

They're JST connectors type 'HY2.0-4P'.

@felmue Works for me too!
I never thought of that for StickCPlus2 !!!
Thanks

I have a new StickCPlus2 that I want to dim or turn off the display backlight.
The old StickCPlus breathe does not work of course because the power system is very different.
I see that the schematic and the pin map say Output 27 is TFT_BL, but I cannot get either On or Off to turn off the backlight.
What am I doing wrong!!??
Thanks, Terry

@shinshin8 You must ignore that the Arduino IDE reports lilygo boards and select your own Core from the drop down. The IDE is just trying to be helpful, but is always wrong, just ignore it and select the correct board from the drop down list in the little window here:

Also questions:
Are you using this example:
https://github.com/m5stack/M5Unit-ReflectiveIR/blob/main/examples/detect.ino?

Have you tried adjusting the sensitivity trim pot full scale, CW, CCW?

Your hand may not reflect enough IR.

The output is active low, so you should see 0Vdc when a reflective object is in the path. ADC will output 0 digital, Off as well.

@shinshin8 said in M5Stack Reflective IR Sensor Always Reads 0:

Board: LilyGO T-Display (ESP32-D0WDQ6-V3)

What do you mean 'Board: LilyGO T-Display (ESP32-D0WDQ6-V3)'
What version of Arduino IDE are you using?
Are you using this example:
https://github.com/m5stack/M5Unit-ReflectiveIR/blob/main/examples/detect.ino

Later edit:
Is the IR LED turned on?
You can use a phone camera to observe near IR.
Have you tried adjusting the sensitivity trim pot full scale, CW, CCW?
Your hand may not reflect enough IR.
The output is active low, so you should see 0Vdc when a reflective object is in the path. ADC 0Vdc as well.

@Snyder_br
Yes.
Bottom of the docs:
https://docs.m5stack.com/en/module/Module-LLM

@Ricardo_Caldas88 Why would you want to interfere with communications,

which is illegal?

The short distance is excellent for pentesting your own hyome/business system and that's it.

@Blimzle @Cairnus Hey guys sounds great, I would also like to be able to edit the many STM controllers as well.
Keep us posted!
Cheers, Terry

@Cairnus @Blimzle
Do you guys have the means to edit STM firmware?

@lewissykes The Factory Demo is here:
https://github.com/m5stack/M5AtomS3-UserDemo/blob/atoms3r/platforms/atoms3r/main/hal_atom_s3r/utils/bmi270/src/bmi270.cpp
But written in C, C++ for ESP-IDF...
The Arduino versions, here:
https://github.com/m5stack/M5AtomS3/blob/main/examples/Basics/imu/imu.ino
Which I see say AtomS3, not 'R' but the

#include <M5Unified.h>

and the correct board definition, may make the mag values present.
But only the 'slick' Users Demo will be that refined and cool.

@Kabron It was a friendly 'btw'.
There is not a bug or a problem.
It works fine for me on 2.3.4.
Relax and use the version you prefer.