Cores

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  Core2 Module and extension board stacking?
  • veryalien

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  @skink we will take this into consideration. thank you feedback.
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  Core2
  • Rop

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  I just got mine today and I am so impressed. It just feels, sounds, and responds in such a great way. This is such an impressive device on many levels. At first I wasn't sure if I needed one since I have a few m5Stacks but I am so glad I purchased one. I have a few questions: since the core2 has enough memory can you enable bluetooth in the uiflow firmware and please add the blocks. I know they are only available for fire but I am assuming they should work with core2. if I wanted to use the core2 in a classroom do you offer any kits for these purposes. I have purchased microbit class packs. I guess I am asking you about availability, for example I know the c plus was unavailable for a time, and I want to make sure things are readily available. It would be great if you have any suggestions on how best to deal with purchasing m5stack for the classroom in order to make sure the students can easily get your product. I know in the states adafruit and digikey are resellers and I might have seen them at microcenter too but to be honest it's easiest and fastest to just send the students to amazon but amazon doesn't offer enough of the m5stack product range. I encourage you to offer a much wider range of your products on amazon, especially including the core2.
• V

  [Solved] Core2 Vibration Motor doesn't seem to work
  • veryalien

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  Hello @veryalien Sorry to hear about your troubles. I looked into the factory test program today and got it to compile and running after enabling PSRAM, the above mentioned fix in SetLDOVoltage() and some cleanup of the old Wire vs Wire1 fight that seems to come back every now and then. I wished the developers could make up their mind and always use Wire for internal I2C devices. Oh well. The factory test code does something interesting regarding vibration motor voltage. During the startup sequence it is first set to 2 volts, then the motor is quickly turned on and off again and then later on it is set to 3.3 volts (not sure why though). When testing the vibration motor from within the settings menu the latter voltage is used. https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Core/M5Core2/Arduino/Core2_Factory_test Cheers Felix
• V

  Not Fully Solved: Core2 UIFlow touch clears display?
  • veryalien

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• E

  Snap in fixture?
  • Efried

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  @efried said in Snap in fixture?: I can't find such in the webshop. https://www.thingiverse.com/thing:3133893 thanks This isn't an M5Stack product, that is a user created free to download addon that needs 3D Printing.
• R

  ATOM Lite
  • ricardo.pereira

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  To avoid possible conflicts with my app, I tested with Wifi Examples from ESP-IDF repo: https://github.com/espressif/esp-idf/blob/master/examples/wifi/getting_started/station/main/station_example_main.c Sorry for this missing point.
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  Display on during deep sleep?
  • m5er

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  Hello all the reason nothing can be seen on the LCD during deep sleep is that the backlight is off. The LCD backlight is driven by GPIO32 (PWM) which is stopped when the ESP32 goes into deep sleep. Luckily GPIO32 can be controlled by the Ultra Low Processor (ULP) too. Below is a small test program which implements PWM for GPIO32 with ULP C macros / assembler. Cheers Felix #include <M5Stack.h> #include "esp32/ulp.h" #include "driver/rtc_io.h" const int lcdBrightness = 1; // (1-255) void ulp_start(void) { // Slow memory initialization memset(RTC_SLOW_MEM, 0, 8192); // M5Stack LCD backlight is connected to GPIO32 (specify by +14) const gpio_num_t lcdPWMPin = GPIO_NUM_32; const int lcdPWMBit = RTCIO_GPIO32_CHANNEL + 14; // GPIO32 initialization (set to output and initial value is 0) rtc_gpio_init(lcdPWMPin); rtc_gpio_set_direction(lcdPWMPin, RTC_GPIO_MODE_OUTPUT_ONLY); rtc_gpio_set_level(lcdPWMPin, 0); // Define ULP program const ulp_insn_t ulp_prog[] = { M_LABEL(1), I_WR_REG(RTC_GPIO_OUT_REG, lcdPWMBit, lcdPWMBit, 1), // on I_DELAY(lcdBrightness * 100), I_WR_REG(RTC_GPIO_OUT_REG, lcdPWMBit, lcdPWMBit, 0), // off I_DELAY(25500), M_BX(1), }; // Run ULP program size_t size = sizeof(ulp_prog) / sizeof(ulp_insn_t); ulp_process_macros_and_load(0, ulp_prog, &size); ulp_run(0); } void setup() { M5.begin(true, false, true, false); M5.Power.begin(); M5.Lcd.println("Put something onto the LCD..."); ulp_start(); M5.Lcd.println("Going to deep sleep"); esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON); esp_deep_sleep_start(); } void loop() { }
• M

  Unable to find documentation for Python in UIFlow
  • Myrkvi

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  Hey, got a little sidetracked with some other projects. Hopefully will be closer to finishing by the end of the month.
• S

  External library
  core • • SamueleBrunini

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  it's a library to control a sensor, I had already built my custom blocks that worked with that library, but when I updated everything I was unable to make it go. so do I have to import the library into the / flash root? and then?
• R

  Problems flashing and connecting ATOM Lite on Catalina 10.15.5 (19F101)
  • rhumbertgz

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  Hi @m5stack you could pip install a pyserial module to solve it. I tried that but the problem persists. As a quick fix, I just flashed it using a window virtual machine. the LED always RED? which program are you use? Yes, but after I flashed the new firmware everything is behaving well. which program are you use? It turned RED, after I tried to flash it with the newer esptool (2.8) as I showed in my initial topic we will fix this bug in next version. 🤞🏻 Have a nice day
• S

  M5Stack not powering up
  • SatishBoddu

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  @m5stack Ah Thank you! I used Easy Loader and updated the firmware! Your help is awesome! I can see the device working now.
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  Atom Matrix LED power clarification
  • pnewb

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  @robalstona excellent. Thank you for the clarification. It’s logical, and I agree that I don’t require anything higher, but I wanted to make sure for safety’s sake.
• S

  Atom Matrix hardware details, power input?
  • steve_j83

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  @steve_j83 voltage input range 4.5~5.2V . for the time being don't open source the schematic. if you just want the know about the pin map you could check the sticker on it back site.
• 

  This topic is deleted!
  • oha2ca

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  Atom Lite - Serial Port access
  • PlastiBots

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  @reaper7 said in Atom Lite - Serial Port access: Serial1.begin(115200, SERIAL_8N1, 32, 26); Thanks. Tried that and causes a crash. I thinned out my code to bare min and this can replicate the crash (sorry not sure if this site has <code> tags. Crash details are further down, but it looks like an issue with the Nextion library. Challenge is this library works fine on other ESP32s. Only difference here is calling out Seria1 with the defined ports. Usually I have ESP32 boards where I can connect direct to UART1 pins, so no need to do pin mapping. #include <Nextion.h> //PRODUCTION: Use this when using the physical MCU + Nextion TFT LCD Hardware or MCU + Serial Window. #define nextion Serial1 boolean debug = true; //Be sure to set to false when done debugging!! Nextion myNextion(nextion, 115200); //create a Nextion object named myNextion using the nextion serial port @ 115200bps void setup() { Serial.begin(115200); //Standard Serial comms Serial1.begin(115200, SERIAL_8N1, 26, 32); //Comms to Nextion if (debug) {Serial.println(F("Connected. Processing loop..."));} } // END SETUP void loop(){} 000000 A10 : 0x1dd4848c A11 : 0x0000001c A12 : 0x3ffba49c A13 : 0x00000000 A14 : 0x00000000 A15 : 0x00000000 SAR : 0x0000001c EXCCAUSE: 0x0000001c EXCVADDR: 0x1dd4848c LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000 Backtrace: 0x40080f75:0x3ffb1ec0 0x400d1986:0x3ffb1ee0 0x400d1d45:0x3ffb1f00 0x400d0e22:0x3ffb1f40 0x400d0bb9:0x3ffb1f80 0x400d13ab:0x3ffb1fb0 0x40088215:0x3ffb1fd0 Rebooting... ets Jun 8 2016 00:22:57 rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 188777542, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:1 load:0x3fff0018,len:4 load:0x3fff001c,len:1216 ho 0 tail 12 room 4 load:0x40078000,len:9720 ho 0 tail 12 room 4 load:0x40080400,len:6352 entry 0x400806b8 Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled. Core 1 register dump: PC : 0x40080f75 PS : 0x00060530 A0 : 0x800d1989 A1 : 0x3ffb1ec0 A2 : 0x00000020 A3 : 0x00000002 A4 : 0x00000000 A5 : 0x00000001 A6 : 0x00060520 A7 : 0x00000000 A8 : 0x3f405808 A9 : 0x00000000 A10 : 0x1dd4848c A11 : 0x0000001c A12 : 0x3ffba49c A13 : 0x00000000 A14 : 0x00000000 A15 : 0x00000000 SAR : 0x0000001c EXCCAUSE: 0x0000001c EXCVADDR: 0x1dd4848c LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000
• S

  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/