Use cad plane to measure dimensions is 12 mm

you can try M5Burner_Mic
https://github.com/micutil/M5Burner_Mic

Import large MicroPython scripts with UIFlow
https://qiita.com/ciniml/items/68bc7f362d6985efc640

usb keyboard demo
https://github.com/m5stack/M5Cardputer/tree/master/examples/Basic/keyboard

Masterkey - USB WiFi Keylogger
https://github.com/justcallmekoko/USBKeylogger

you can see examples
#include <M5AtomS3.h> not #include "M5Stack.h"

https://www.espressif.com/en/support/download/other-tools

https://community.m5stack.com/topic/814/error-on-downloading-to-m5stickc/2#

https://community.m5stack.com/post/13810

https://community.m5stack.com/post/7443

https://zenn.dev/saitotetsuya/articles/m5stack_m5burner_v3
https://github.com/3110/m5burner-user-custom-platformio-template

https://www.youtube.com/watch?v=mbAgfB75xso

https://www.youtube.com/watch?v=En5Tnv3-hXM

https://docs.m5stack.com/en/arduino/arduino_ide

https://docs.m5stack.com/en/arduino/m5stickc_plus2/program

* @Hardwares: M5StickCPlus2
 * @Platform Version: Arduino M5Stack Board Manager v2.0.9
 * @Dependent Library:
 * M5GFX: https://github.com/m5stack/M5GFX
 * M5Unified: https://github.com/m5stack/M5Unified
 * M5StickCPlus2: https://github.com/m5stack/M5StickCPlus2
 */

#include "M5StickCPlus2.h"         *focus

https://github.com/esphome/issues/issues/4933

Connect the 4 wires on the back of g21 and g25, and modify the program code pin code

@GordonD said in M5Unit_CO2_Core2 example compilation error:

fatal error: bsec2.h: No such file or directory

https://github.com/BoschSensortec/Bosch-BSEC2-Library

https://community.m5stack.com/post/13810

https://github.com/Ajb2k3/UIFlowHandbook/blob/master/UIFlowhandbook.pdf

Test the software below
https://www.youtube.com/watch?v=HsSq1Ce2HUc