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    Best posts made by reaper7

    • RE: M5StackSAM - Application Menu Library

      simple app Accu meter (MAX17043 module soldered inside Battery Module):

      1_1518259074527_accu_meter2.jpg

      0_1518259074527_accu_meter1.jpg

      code based on nlamprian library from https://github.com/nlamprian/LiFuelGauge:
      available on my gist:
      https://gist.github.com/reaper7/c9f8dba68edae8c3d53075b10f6bbba4

      posted in PROJECTS
      reaper7
    • RE: M5Stack - Simple Applications Menu + some APPs

      Accu meter app (MAX17043 module soldered inside Battery Module)

      0_1517776778538_DSC_0115-01.jpg

      posted in PROJECTS
      reaper7
    • M5Stack BLE client for Owon B35T multimeter

      https://github.com/reaper7/M5Stack_BLE_client_Owon_B35T

      posted in PROJECTS
      reaper7
    • RE: Let's speed up DrawLine and DrawPixel?

      @dda 在 Let's speed up DrawLine and DrawPixel? 中说:

      Yep. And I managed to integrate this to the M5Stack library. I am doing tests, but so far so good. I've run a few modified sketches without issue. The TFT_ArcFill example is quite impressive.
      .
      .
      .
      There may be others, I'll see what happens when I compile the non-touch examples.

      TFT_eSPI is the best lib, we added m5stack support some time ago:
      https://github.com/Bodmer/TFT_eSPI/pull/88
      btw, m5stack display lib based on the early version of TFT_eSPI
      but since then, TFT_eSPI has developed a LOT!!!

      P.S. for advanced GUI we also added m5stack support for GUIslice:
      https://github.com/ImpulseAdventure/GUIslice/pull/34
      which uses TFT_eSPI as display driver.

      posted in FAQS
      reaper7
    • RE: M5StackSAM - Application Menu Library

      0_1518346185558_mod.jpg

      cutting pcb is not necessary,

      cutting wire between ACCU+ and VCC also not necessary
      but I do not want drain accu by max17043 when m5stack is off

      REMEMBER! If wire between ACCU+ and VCC are not cut (on the max17043 pcb) as it is originally,
      then connect only ACCU+ pin to M-BUS BATTERY and DO NOT connect VCC to M-BUS 3.3V

      posted in PROJECTS
      reaper7
    • RE: M5Stack BLE client for Owon B35T multimeter

      Hi @JimiT ,
      Of course You can copy/clone/improve, this is for the people :)

      About finally sketch size...there are two options:

      • arduino-esp32 git released before 05.03.2018
      • current git + bigger app partition: http://desire.giesecke.tk/index.php/2018/01/30/change-partition-size/

      Personally I use a second option to keep up with git changes.
      BTW choose the partition size should be available in ide.

      About sd loader...great idea! I didn't know this library, tnx for link!

      posted in PROJECTS
      reaper7
    • RE: IP5306 automatic standby

      @m5stack - very good news!

      P.S. please also check the quality of connectors, especially female (on master board),
      maybe only my m5stack has such a problem but from the beginning of use, various pins have a contact problem
      with bottom plates(I check different: ioExtension/proto board/battery board).
      Evidently male pins from bottom plates do not have good contact with female connector on base plate, I do not check all contacts but have problem with accu pin, adc35 pin, adc36 pin.
      it's very annoying and spoils the positive impression from the module
      when you can not read the input status and wonder what is wrong in the code
      and it's not the fault of the code but the lack of contact

      P.S.P.S please also vote for this PR: https://github.com/espressif/arduino-esp32/pull/1242
      because current version of board.txt do not include proper pins_arduino.h variant for m5stack and for e.g. ADC1 or ADC2 are unknown when compile

      posted in FAQS
      reaper7
    • RE: "Bottom" IO expander pinout

      Names on the right side correspond to the GPIO numbers on the left and are connected together.

      higher DA mean GPIO25
      lower DA mean GPIO26

      R0/T0 = GPIO3/GPIO1 -> uart0
      R2/T2 = GPIO16/GPIO17 -> uart2

      Similarly, bottom names applies to the gpio numbers at the top.

      0_1524593532545_1524592015889-bottom-pinout.jpg

      posted in PRODUCTS
      reaper7
    • RE: Battery issue

      @vvs551 在 Battery issue 中说:

      I have the same problem, I think.
      There is absent +5V at the bottom board.
      But, when I press the bottom to main board with a great force, this problem is out.
      As for me, there is a bad contact on the connector between mainboard and bottom.
      And I don't know how to fix it ((

      I have similar obeservations...
      Solved this by a little deflection all header pins on bottom board
      but it looks like it's a base plate female header problem, not bottom male header,
      because when I got battery board then problem back and in this board I also had little move header pins
      something like this: from IIIII to IIIII

      posted in PRODUCTS
      reaper7
    • RE: M5Stack - Simple Applications Menu + some APPs

      @tomsuch 在 M5Stack - Simple Applications Menu + some APPs 中说:

      APP - GY-512

      very nice system!
      APP - GY-512 works also with built-in MPU9250 :)

      Can You modify TIM MEASUREMENT APP?
      S/S button should 1.START->2.STOP->3.START without reset between 2 and 3 step...(something like continous measurement with pause). For reset value we have RES button

      posted in PROJECTS
      reaper7
    • RE: M5Stack with CAN

      why no?

      we have CAN library:
      for esp-idf:
      https://github.com/ThomasBarth/ESP32-CAN-Driver
      for arduino:
      https://github.com/nhatuan84/arduino-esp32-can-demo

      more info:
      http://www.iotsharing.com/2017/09/how-to-use-arduino-esp32-can-interface.html
      we only need additional CAN transceiver as described above

      we still can use GPIO35 as CAN RX and GPIO5 as CAN TX (this config is used by Olimex EVB Rev B)
      Personally I haven't tested GPIOs pair 35/5 but pair 4/5 works very well with arduino lib

      posted in PRODUCTS
      reaper7
    • RE: Memory related issue

      from http://desire.giesecke.tk/index.php/2018/01/30/change-partition-size/

      inside ..esp32\tools\partitions add new file for e.g. bigapp.csv with content:

      # Name,   Type, SubType, Offset,  Size, Flags
      nvs,      data, nvs,     0x9000,  0x5000,
      otadata,  data, ota,     0xe000,  0x2000,
      app0,     app,  ota_0,   0x10000, 0x1E0000,
      app1,     app,  ota_1,   0x1F0000,0x1E0000,
      eeprom,   data, 0x99,    0x3F0000,0x1000,
      spiffs,   data, spiffs,  0x3F1000,0xF000,
      

      and inside esp32\boards.txt add new(copy) board like:

      ##############################################################
      
      m5stack_bigapp.name=M5Stack_bigapp
      
      m5stack_bigapp.upload.tool=esptool
      m5stack_bigapp.upload.maximum_size=1966080
      m5stack_bigapp.upload.maximum_data_size=294912
      m5stack_bigapp.upload.wait_for_upload_port=true
      
      m5stack_bigapp.serial.disableDTR=true
      m5stack_bigapp.serial.disableRTS=true
      
      m5stack_bigapp.build.mcu=esp32
      m5stack_bigapp.build.core=esp32
      m5stack_bigapp.build.variant=esp32
      m5stack_bigapp.build.board=M5Stack_bigapp
      
      m5stack_bigapp.build.f_cpu=240000000L
      m5stack_bigapp.build.flash_size=4MB
      m5stack_bigapp.build.flash_mode=dio
      m5stack_bigapp.build.boot=dio
      m5stack_bigapp.build.partitions=bigapp
      
      m5stack_bigapp.menu.FlashMode.qio=QIO
      m5stack_bigapp.menu.FlashMode.qio.build.flash_mode=dio
      m5stack_bigapp.menu.FlashMode.qio.build.boot=qio
      m5stack_bigapp.menu.FlashMode.dio=DIO
      m5stack_bigapp.menu.FlashMode.dio.build.flash_mode=dio
      m5stack_bigapp.menu.FlashMode.dio.build.boot=dio
      m5stack_bigapp.menu.FlashMode.qout=QOUT
      m5stack_bigapp.menu.FlashMode.qout.build.flash_mode=dout
      m5stack_bigapp.menu.FlashMode.qout.build.boot=qout
      m5stack_bigapp.menu.FlashMode.dout=DOUT
      m5stack_bigapp.menu.FlashMode.dout.build.flash_mode=dout
      m5stack_bigapp.menu.FlashMode.dout.build.boot=dout
      
      m5stack_bigapp.menu.FlashFreq.80=80MHz
      m5stack_bigapp.menu.FlashFreq.80.build.flash_freq=80m
      m5stack_bigapp.menu.FlashFreq.40=40MHz
      m5stack_bigapp.menu.FlashFreq.40.build.flash_freq=40m
      
      m5stack_bigapp.menu.UploadSpeed.921600=921600
      m5stack_bigapp.menu.UploadSpeed.921600.upload.speed=921600
      m5stack_bigapp.menu.UploadSpeed.115200=115200
      m5stack_bigapp.menu.UploadSpeed.115200.upload.speed=115200
      m5stack_bigapp.menu.UploadSpeed.256000.windows=256000
      m5stack_bigapp.menu.UploadSpeed.256000.upload.speed=256000
      m5stack_bigapp.menu.UploadSpeed.230400.windows.upload.speed=256000
      m5stack_bigapp.menu.UploadSpeed.230400=230400
      m5stack_bigapp.menu.UploadSpeed.230400.upload.speed=230400
      m5stack_bigapp.menu.UploadSpeed.460800.linux=460800
      m5stack_bigapp.menu.UploadSpeed.460800.macosx=460800
      m5stack_bigapp.menu.UploadSpeed.460800.upload.speed=460800
      m5stack_bigapp.menu.UploadSpeed.512000.windows=512000
      m5stack_bigapp.menu.UploadSpeed.512000.upload.speed=512000
      
      m5stack_bigapp.menu.DebugLevel.none=None
      m5stack_bigapp.menu.DebugLevel.none.build.code_debug=0
      m5stack_bigapp.menu.DebugLevel.error=Error
      m5stack_bigapp.menu.DebugLevel.error.build.code_debug=1
      m5stack_bigapp.menu.DebugLevel.warn=Warn
      m5stack_bigapp.menu.DebugLevel.warn.build.code_debug=2
      m5stack_bigapp.menu.DebugLevel.info=Info
      m5stack_bigapp.menu.DebugLevel.info.build.code_debug=3
      m5stack_bigapp.menu.DebugLevel.debug=Debug
      m5stack_bigapp.menu.DebugLevel.debug.build.code_debug=4
      m5stack_bigapp.menu.DebugLevel.verbose=Verbose
      m5stack_bigapp.menu.DebugLevel.verbose.build.code_debug=5
      
      ##############################################################
      

      then for your big apps you can select this board

      posted in FAQS
      reaper7
    • ArduinoIDE M5Stack Partition Scheme

      Finally we can choose partition scheme for M5Stack board in Arduino IDE.
      It means that for large application (for eg. with bluetooth stack),
      that exceededs the maximum flash size for the default partition scheme,
      we can choose two others partitons "no ota" or "minimal spiffs".

      https://github.com/espressif/arduino-esp32/pull/1382
      https://github.com/espressif/arduino-esp32/pull/1302

      maximum sketch size for partitions:
      1310720 -> default
      2097152 -> no_ota
      1966080 -> min_spiffs

      0_1526363062962_Schowek01.jpg

      posted in Lessons and Guides
      reaper7
    • RE: SPI clash between LCD and nRF24L01

      Phisically connect Your MAX to SPI lines and CS leave connected as is!
      M5Stack pinout:
      https://github.com/m5stack/M5Stack#pinout

      MAX DO -> M5Stack MISO (GPIO19)
      MAX CS -> M5Stack GPIO17
      MAX CLK -> M5Stack CLK (GPIO18)

      Looks like You have connection prepared corectly...

      Change only Your sketch like this:

      #include <SPI.h>
      #include <Adafruit_MAX31855.h>
      //#include <M5Stack.h>
      
      // Example creating a thermocouple instance with software SPI on any three digital IO pins.
      //#define MAXDO   19
      //#define MAXCLK  18
      #define MAXCS   17
      
      Adafruit_MAX31855 thermocouple(MAXCS);
      
      void setup() {
        //M5.begin();
        Serial.begin(115200);
        Serial.print("Internal Temp = ");
        Serial.println(thermocouple.readInternal());
        
        while (!Serial) delay(1); // wait for Serial on Leonardo/Zero, etc
        
        Serial.println("MAX31855 test");
      
        thermocouple.begin();
      
        // wait for MAX chip to stabilize
        delay(2000);
      }
      
      void loop() {
      
        // basic readout test, just print the current temp
        Serial.print("Internal Temp = ");
        Serial.println(thermocouple.readInternal());
        
        double c = thermocouple.readCelsius();
        if (isnan(c)) {
          Serial.println("Something wrong with thermocouple!");
        } else {
          Serial.print("C = ");
          Serial.println(c);
        }
       
        delay(1000);
      
        //M5.update();
      }
      
      posted in PRODUCTS
      reaper7
    • RE: Atom Lite - Serial Port access

      on Arduino, You are try something like this??:
      Serial1.begin(115200, SERIAL_8N1, 32, 26);

      pin32 and pin26 on grove connector as RX and TX

      I haven't tested it...

      posted in Cores
      reaper7