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  • 53 Topics
    243 Posts
    greenleafG
    TL;DR: The factory certificate in slot 10 is in a compressed format that AWS IoT rejects. You need to generate a new properly-formatted certificate. Full working example here: https://github.com/scarolan/grafana-core2aws-iot The Problem Everyone Hits If you've tried to use the Core2 for AWS with its built-in ATECC608 secure element, you've probably hit this error when registering the certificate: CertificateValidationException: The certificate could not be parsed You're not crazy. The factory certificate in slot 10 is stored in Microchip's compressed format with: Empty issuer/subject fields Invalid dates (Aug 28, 2005) Missing X.509 structure AWS IoT's register-certificate-without-ca API rejects it outright. The Solution Generate a new properly-formatted certificate that still uses the locked private key in slot 0 (so you maintain hardware security): 1. Clone the Working Example git clone https://github.com/scarolan/grafana-core2aws-iot cd grafana-core2aws-iot/extras/generate_cert 2. Flash the Certificate Generator pio run -t upload --upload-port COM3 pio device monitor --port COM3 --baud 115200 3. Save the Certificate Copy the certificate output (including -----BEGIN CERTIFICATE----- lines) to a file. 4. Register with AWS IoT aws iot register-certificate-without-ca \ --certificate-pem file://device_new.pem \ --status ACTIVE \ --region us-east-1 Then attach your policy and thing as usual. 5. Use in Your Firmware Update secrets.h with the new certificate and you're done! Why This Works The certificate generator: Reads the public key from slot 0 (the private key never leaves the chip) Creates a proper X.509 certificate with valid dates and subject fields Signs it using the locked private key (signing happens inside the ATECC608) Returns a properly-formatted certificate AWS IoT accepts Hardware security is maintained - the private key in slot 0 is never exposed, it's just used differently. Complete Documentation I've documented the full solution with explanations of what's happening: ATECC608 Architecture - How the secure element works, slot configuration, lock mechanism Certificate Solution - Why the factory cert fails and how to fix it Full Working Example - Complete vibration monitoring IoT demo with AWS IoT Core + Timestream Why M5Stack Doesn't Document This The compressed certificate format is a Microchip design decision (saves space on the chip). It's meant to work with: Microchip's Trust Platform provisioning tools Their specific certificate reconstruction libraries Microchip-managed certificate authorities It was never designed to work directly with third-party services like AWS IoT without special handling. M5Stack provides a complex registration helper (registration_helper.py) that reconstructs the certificate with special manifest-based APIs, but it's 800+ lines of Python with tons of dependencies. The approach above is much simpler - just generate a new cert and register it normally. Tested and Working This solution is running in production on my demo device: MQTTS publishing to AWS IoT Core every 5 seconds Data flowing to Amazon Timestream Hardware-backed authentication with ATECC608 Zero issues with certificate validation Hope This Saves Someone's Week I fought with this for a week a couple years ago and gave up in frustration. Revisited it recently and finally cracked it. Hopefully this saves others the same pain! Questions/issues? Comment here or open an issue on GitHub. Repository: https://github.com/scarolan/grafana-core2aws-iot Hardware: M5Stack Core2 for AWS Libraries: ArduinoECCX08, ArduinoBearSSL, M5Unified Tested: PlatformIO, Arduino framework on ESP32

  • 89 Topics
    337 Posts
    ShawnHymelS
    @felmue That helps a lot, thank you!

  • 65 Topics
    228 Posts
    H
    Has anyone installed firmware and upon starting gets stuck in a menu selection loop where the highlight selection continues to scroll?

  • M5Stack's little brother. Discuss M5 Stick hardware and software related issues here

    403 Topics
    2k Posts
    M
    Does anyone's built-in IR receiver work?

  • 18 Topics
    71 Posts
    P
    I just got the M5GO Kit, and I'm trying to make a Voice Assistant. For some reasons, the Demo of the kit made me think that accessing the microphone is easy. But, after hours of finding, it seems that there is no library or support for the kit to record audio. Does anyone have any resource regarding this?

  • 27 Topics
    114 Posts
    M
    Problem: Der Schrittmotor funktioniert nur korrekt in der Z-Achse bei normalen (langsamen) Drehgeschwindigkeiten. Beim Versuch, die X- und Y-Achsen zu verwenden, funktioniert der Motor nur, wenn ich die Vorschubgeschwindigkeiten auf das 10-fache oder höher erhöhe. Wenn ich versuche, die Adresse auf 0x71 zu ändern, wird das Modul nicht erkannt.

  • 50 Topics
    133 Posts
    Y
    @samantha_martin Hola Samantha. El M5StickC Plus (SKU:K016-P) utiliza el chip ESP32-PICO-D4, que integra Bluetooth LE. Para reducir la latencia en la transmisión HID, puedes probar las siguientes acciones: Optimizar la frecuencia de envío de datos: En las librerías ESP32-BLE-Keyboard o BleGamepad, ajusta el intervalo de notificación BLE a un valor más bajo (por ejemplo, 10-20 ms). Algunas librerías permiten configurar esto al inicializar el dispositivo HID. Minimizar el código en el loop(): Asegúrate de que no haya delays innecesarios ni tareas bloqueantes (como impresiones Serial) que ralenticen la detección de botones y el envío de comandos. Configurar el modo BLE de bajo consumo: Aunque el ESP32-PICO-D4 es eficiente, verifica que no se encuentre en modos de suspensión prolongada. Asegúrate de que el dispositivo BLE esté configurado para enviar notificaciones inmediatamente al detectar una pulsación. Actualizar el firmware del ESP32: Usa la última versión del core ESP32 en Arduino IDE, ya que a menudo incluyen optimizaciones en el stack BLE. Verificar la configuración de Android: En el menú de configuración de Bluetooth de tu teléfono, desactiva opciones como "Ahorro de batería" para el dispositivo M5StickC Plus, ya que pueden restringir la frecuencia de actualizaciones HID. https://chat.m5stack.com/

  • For Topics related to the Core 2

    335 Topics
    1k Posts
    easytargetE
    @skyflyer said in External 1S LIPO on M5Core2 BUS PIN1 and PIN30?: I tried to find information about it, and want to confirm that it is OK to connect the external Lipo battery to pins 1 and 30 on the "BUS expansion port"? And that the battery will be charged when connected to the external USB power? If you look at the schematic you will see that pin30 on the bus and VBAT (on the lipo connector) are the same. So yes, you can replace the internal battery with an external one with the same voltage! @skyflyer said in External 1S LIPO on M5Core2 BUS PIN1 and PIN30?: And I don't need to remove the internal 500mAh battery, since they would be connected in parallel anyhow? Do not simply put rechargeable batteries in parallel. Disconnect the internal one. You can have batteries in parallel but.. at a minimum you need some diodes to prevent them back-charging each other, have a look online where there is a lot of info about this.
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  • S

    how to calibrate a m5 stack for GPS navigation

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    1 Posts
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    No one has replied
  • S

    Adding a microphone to the Core+Watch kit

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    C
    Hook it up to an AD input of the M5Stack (ESP32). Watch : https://www.youtube.com/watch?v=DffZVyksYi4 I will use one as a spectrum analyzer recording the sound of bees.
  • C

    ATOM Matrix - basic working Access Point (micropython)

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    C
    @m5stack UiFlow Version 1.4.5 (Desktop) Issues Pressing </> Python: [image: 1586899663073-d5e1d27a-fb3e-4cf6-a804-ccb943374a93-image.png] At any time wipes out any code you have in the edit window, why? Cannot save code, also two methods available to save: [image: 1586899837534-4ebd7d13-b7fd-46f2-b82b-f235d7d1d99c-image.png] Or [image: 1586899862738-ae0ea337-c3c8-4c38-812b-817cba96a19a-image.png] Using either method saves a main.m5f file (Note, not a main.py), opening the main.m5f results in: rom m5stack import * from m5ui import * from uiflow import * rgb.set_screen([0,0,0,0,0xFFFFFF,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]) setScreenColor(0x222222) Ok, so I thought I would change version via the Ver button at the top of the screen, now all I get is: [image: 1586900319548-c38ae718-927a-486d-b540-bc31fbbfe7f9-image.png] On startup I get: [image: 1586900383901-704ee601-390a-4461-89be-2cde53e65372-image-resized.png] Everytime even though the driver is installed. I select Skip which takes me to the main GUI which informs me the Atom-matrix is detected. Basic editing navigation via shortcut keys such as <ctrl> S don't work - very annoying. Because of the Javascript error I can't open in UIFlow anymore to continue.... Now I'm stuck. Please tell me I'm doing something wrong and being a complete idiot...
  • C

    (SOLVED)Power ATOM Lite

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    14 Posts
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    P
    thank you.
  • takanotume24T

    How to save battery with M5StickC

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    5 Posts
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    P
    it also depends on the clock speed. sometimes speed is not needed. and it can save 50% of the power consumption on max CPU load https://www.savjee.be/2019/12/esp32-tips-to-increase-battery-life/
  • A

    m5Atom Lite IR range

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    lukasmaximusL
    I published this video a short while ago https://www.youtube.com/watch?v=V8rmir-Tmy8 you can try the libraries I used. I reckon I got around 10cm range from the sticks but much less from the atoms, you can see in the videos, what range I am successful at.
  • M

    M5Atom I2c

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    M
    ok...i find out that i have to use SoftwareI2c and the i2c device must have pullup resistors: #include "SoftwareI2C.h" SoftwareI2C softwarei2c; void setup() { Serial.begin(115200); softwarei2c.begin(26, 32); // sda, scl Serial.println("begin to scan..."); } void loop() { for (unsigned char i = 1; i <= 127; i++) { if (softwarei2c.beginTransmission(i)) { Serial.print("0x"); Serial.println(i, HEX); while (1); } softwarei2c.endTransmission(); } Serial.println("find nothing"); while (1); }
  • C

    [SOLVED]M5Stack basic I2C pull-up resistor

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    6 Posts
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    C
    tnks a lot!!!
  • K

    M5Atom Matrix Firmware flash fail

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    2 Posts
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    K
    I had to use a windows machine with M5Burner because as much as I tried the Mac version would no work as expected. However I got it flashed back to UIFlow 1.4.5 and got it working now
  • M

    Atom Matrix battery management?

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    m5stackM
    ATOM not build-in power management chip. the schematic is not provided yet
  • C

    M5Stack and I2C distance sensor ks103

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    2 Posts
    5k Views
    C
    now it works: /* http://www.dauxi.com/KS10X-V110_EN.pdf 11101000 https://www.arduino.cc/en/Tutorial/SFRRangerReader */ #include <M5Stack.h> #include <Wire.h> #define KS103ADD 0x74 // questo è quello che da lo scanner IIC //#define KS103ADD 0xE8 // questo è quello che da all'inizio il led verde 11101000 back green led Short flash twice will be “1”, slow flash once will be “0” word dist = 0; void setup() { Wire.begin(); // Wire.begin(22, 21);//M5STACK: 22/SCL/GIALLO ,21/SDA/BIANCO Serial.begin(115200); //inizio comando Wire.beginTransmission(KS103ADD); Wire.write(byte(0x02)); Wire.write(0x72); // Invia istruzioni per la riduzione del rumore Wire.endTransmission(); // fine comando delay(2000); } void loop() { // if (Serial.read() == 's') { // while (Serial.read() != 'o') { KS103_read(); Serial.print(dist/10); Serial.print(" cm"); Serial.println(); delay(250); //} //} // delay(1000); } void KS103_read() { // step 1: instruct sensor to read echoes Wire.beginTransmission(KS103ADD); // transmit to device // the address specified in the datasheet is (0xE8) // but i2c adressing uses the high 7 bits so it's (0x74) Wire.write(byte(0x02)); // sets register pointer to echo #1 register (0x02) Wire.write(0xbc); //Range is set to 10m with temperature compensation Wire.endTransmission(); // step 2: wait for readings to happen // delay(1); delay(70); // datasheet suggests at least 65 milliseconds // step 3: instruct sensor to return a particular echo reading Wire.beginTransmission(KS103ADD); // transmit to device Wire.write(byte(0x02)); // sets register pointer to echo #1 register (0x02) Wire.endTransmission(); // stop transmitting // step 4: request reading from sensor Wire.requestFrom(KS103ADD, 2); // request 2 bytes from slave device // step 5: receive reading from sensor if (2 <= Wire.available()) // if two bytes were received { dist = Wire.read(); // receive high byte (overwrites previous reading) dist = dist << 8; // shift high byte to be high 8 bits dist |= Wire.read(); // receive low byte as lower 8 bits } }
  • C

    Atom Light Neopixels

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    C
    OK, thanks, I'll have a look.
  • V

    Uploading to M5STACK BASIC DevKit

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    V
    I don't know how to edit the title to put [SOLVED] into it.
  • J

    How do you turn off the m5stack while it's charging?

    Moved
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    3 Posts
    16k Views
    Z
    Hello, please, could you help me? What is M5.powerOFF() doing inside? I am using the esp-idf for my projects with M5Stack and I want Power off from software, but I can only deinitialize all of my routines and turn off display. And when I want to powr on again after power button, then the device turn off first. Thank you. Vilem
  • O

    Problems with powerOFF() (Guru Meditation)

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    m5stackM
    @option pls check the lib version is latest. and confirm the board select m5stack -core
  • A

    wifisetup & machine.rtc in MicroPython

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    E
    RTC works but not ntp_syc- that is a pity
  • pursonP

    Saving images to SD

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    1 Posts
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    No one has replied
  • B

    m5Stack basic. Wrong colors.

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    m5stackM
    hi , did your has upgrade your library version to latest. (m5stack lib version >= 0.2.8)
  • arzamanA

    M5stack basic core battery power on issue (ip5306 strange power management)

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    C
    @ckuehnel said in M5stack basic core battery power on issue (ip5306 strange power management): Here is a working code example: /* Test of IP5306 functions */ #include <M5Stack.h> void setup() { // initialize the M5Stack object M5.begin(); Wire.begin(); // required to access IP5306 M5.Lcd.fillScreen(BLACK); M5.Lcd.setCursor(0, 10); M5.Lcd.setTextColor(WHITE); M5.Lcd.setTextSize(2); M5.Lcd.printf("IP5306 Function Test\r\n"); if(!M5.Power.canControl()) { M5.Lcd.setTextColor(RED); M5.Lcd.printf("No communication with IP5306 chip"); while(1); } } void loop() { M5.Lcd.fillRect(0,180,360,60,0); uint8_t bat = M5.Power.getBatteryLevel(); M5.Lcd.setCursor(0,180); if (M5.Power.isCharging()) M5.Lcd.printf("Battery is charging\r\n"); else M5.Lcd.printf("Battery is not charging\r\n"); M5.Lcd.printf("Battery Level %d", bat); M5.Lcd.progressBar(0, 220, 360, 20, bat); delay(5000); } Hi, doesn't compile for me!!! this is the arduino IDE output: Arduino: 1.8.7 (Mac OS X), Board: "M5Stack-Core-ESP32, QIO, 80MHz, Default, 921600, None" Build options changed, rebuilding all /Users/AD/Documents/Arduino/libraries/M5Stack/src/utility/Power.cpp: In member function 'void POWER::powerOFF()': /Users/AD/Documents/Arduino/libraries/M5Stack/src/utility/Power.cpp:361:28: error: 'gpio_deep_sleep_hold_dis' was not declared in this scope gpio_deep_sleep_hold_dis(); ^ Multiple libraries were found for "SPI.h" Used: /Users/AD/Documents/Arduino/hardware/espressif/esp32/libraries/SPI Not used: /Users/AD/Documents/Arduino/libraries/SPI Multiple libraries were found for "SD.h" Used: /Users/AD/Documents/Arduino/hardware/espressif/esp32/libraries/SD Not used: /Users/AD/Documents/Arduino/libraries/SD Not used: /private/var/folders/f3/0kf10ljj6sj4q4twsw_vtxrw0000gn/T/AppTranslocation/395E70C5-F1F6-4076-AA11-9C132A2C6ACF/d/Arduino 1.8.7.app/Contents/Java/libraries/SD exit status 1 Error compiling for board M5Stack-Core-ESP32. This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences. tnks
  • C

    Stack smashing protect failure!

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    No one has replied