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    Kabron

    @Kabron

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    Posts made by Kabron

    • Bootloop

      Did anybody seen similar?
      I have no idea how to repair.
      0_1634106878005_bug.jpg

      posted in M5Stack Fire
      Kabron
    • ECG Module impressions. Useless device

      I already wrote about poor documentation(
      https://community.m5stack.com/topic/2482/ecg-module-code)
      Now, I tested acquisition speed of the device.
      Maximum data rate(DisplayECG() - OFF, delay(5) - OFF) is 66Hz.
      And it could not be increased without changing onboard STM32 FW.
      This uC acts as BLACK BOX. No description, no source code.
      DisplayECG() - ON, delay(5) - OFF - 45Hz
      Any serious ECG measurements started with data rate at least 250Hz.

      Initially, I planned to use it with IR pulse sensor for Blood Pressure estimation. Obviously, with 15 mS accuracy it is impossible.

      Make your own conclusions

      posted in Modules
      Kabron
    • RE: ECG Module code

      It is very shame that the product is not accompanied with any documentation.
      Where is the detailed schematic?
      Where is the description of the FW?
      Where is the description of RawDisplay SW?
      Where is description of the passthrough serial?
      Where is protocol description?

      posted in Modules
      Kabron
    • ECG Module13.2 detailed schematic mandatory

      ECG Module13.2 detailed schematic mandatory
      Block-diagram absolutely non informative

      posted in Modules
      Kabron
    • Error in M5core2 library

      I post it here
      https://github.com/m5stack/M5Core2/issues/40

      Now Battery Coulombs are calculated correctly.

      posted in Core 2
      Kabron
    • RE: AXP192 coulomb counter issues

      @m5stack said in AXP192 coulomb counter issues:

      it seems like a bug. I will contact our engineer to solve this problem.

      Any progress?

      posted in M5 Stick/StickC
      Kabron
    • IP5306 charging current is 6 times greater than C/10

      According to datasheet IP5306 charging current is 1.8A.
      Battery, used in M5 Core Bottom is 300mAh.
      It means that charge current is 6(!) times greater than C/10.
      Only special designed batteries could work with such charge rate!
      For me it is nothing surprizing that batteryes in M5 Core lives nothing.
      For me is surprizing that no flammable incidents were reported yet.
      What your designers were thinked about?!
      0_1609929841415_Datsheet.jpg

      posted in Cores
      Kabron
    • WTF with versions???

      Got 2 M5stack Core2 yesterday.

      Spent 2 hours trying to understand M5 logic with versions mess.
      Burned Core2 via M5Burner(2.1.6) with UIFlow Beta4-core2.
      Download UIFlow-Desktop-IDE and choosed Beta, because there is no Core2 in v1.4.5.
      CheckUpdate gives Current Version 1.0.12 on both 1.4.5 and Beta.
      What is 1.0.12 for?

      After connecting to Core2, IDE reccomend update Firmware to 1.6.3,
      WEB IDE reccomend update Firmware to 1.6.4.
      What are 1.6.3 and 1.6.4 Firmwares and where are them located?

      posted in Core 2
      Kabron
    • Spontaneously Turns ON

      After switching off by double click on power button
      M5stack Grey Spontaneously Turns ON after several minutes.
      And it continues till battery discharge.
      Does anybody observed such behaviour?

      posted in M5stack Grey
      Kabron
    • Distance Visualization With Multiple SPAD areas in VL53L1X Time-of-Flight sensor

      This example illustrates how to get information from multiple SPAD areas from VL53L1X TOF sensor. 16 Regions Of Interest(ROI) with size of 4 * 4 SPAD elements each are defined in SPAD sensor array. Thus, a 4 * 4 measurement matrix formed. Distances measured from each of 16 ROI, interpolated to 8 * 8 image and displayed as Thermal like image.
      Code here:
      https://yadi.sk/d/qpxO0fMItW4Qpw
      Video here:
      https://youtu.be/b18ghRCWawo

      0_1549627639513_Distance.jpg

      posted in PROJECTS
      Kabron