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'.

@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.

@Kabron, I wish Arduino did not offer M5Stack Boards, when M5Stack official offers up to date board definitions.
Just use M5Stack!
I have 'one-of-everything' M5Stack boards and many, many projects later, I'm happy.

BTW:
What version of Arduino IDE are you using?

Everybody:

Bruce is Hacking software like Nemo and Marauder, a Flipper Zero wannabe?

Don't install this software.

@kaidencoolkid Did you know that Bruce is Hacking software like Nemo and Marauder, a Flipper Zero wannabe?

Don't install this software.

@erkel Well, seeing as how you are not connecting it to a M5Stack product, but a RPi, what library (driver) are you using?
Also: What language are you programming it in?

@ajb2k3 FYI I had that problem when m5Stack switched over to CH9102F which I could not get to run on my earlier Intel Mac.
Like you said: 'trouble due to osx security'
But my new M1 Mac it worked out of the box.
Cheers

@louisandthecat ESP32-S3FN8 8 MB (Quad SPI), so 8MB flash program storage. no other PSRAM.
UIFlow/Python uses a lot of memory.
That's all I have!
Cheers.

@Arn_8 I am not familiar with this camera or AI. Have you been able to connect to it and read it?
The Pi would need SoftwareSerial UART and I suppose some app on the Pi to interpret the results.
I assume you have been to this site?
https://github.com/m5stack/M5-ProductExampleCodes/blob/master/App/UnitV/track_ball/track_ball.ino
Hope this helps!

@Arn_8 There are a surprising number on UnitV products, what is the part number?
Such as U-nnn.