Cores

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  how to calibrate a m5 stack for GPS navigation
  • siddharth

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• S

  Adding a microphone to the Core+Watch kit
  • somedude

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  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)
  • Conrad

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  @m5stack UiFlow Version 1.4.5 (Desktop) Issues Pressing </> Python: At any time wipes out any code you have in the edit window, why? Cannot save code, also two methods available to save: Or 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: On startup I get: 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
  • cepics

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  thank you.
• 

  How to save battery with M5StickC
  • takanotume24

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  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
  • alperkal

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  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
  • Michael1968

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  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
  • cepics

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  C

  tnks a lot!!!
• K

  M5Atom Matrix Firmware flash fail
  • kylebuttress

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  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?
  • m3ftah

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

  M5Stack and I2C distance sensor ks103
  • cepics

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  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
  • colinm1001

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  OK, thanks, I'll have a look.
• V

  Uploading to M5STACK BASIC DevKit
  • vibi27

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  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?
  • joeybab3

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  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)
  • option

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

  wifisetup & machine.rtc in MicroPython
  • akita11

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  RTC works but not ntp_syc- that is a pity
• 

  Saving images to SD
  • purson

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• B

  m5Stack basic. Wrong colors.
  • borisu

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

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

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  @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!
  • CHB

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