FAQS

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  Change font size in python
  • loboris

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  Note, Do not submit questions in this section.
  • m5-docs

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  COM.LTE (SIM7600G-H) on Verizon Network
  • hello

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  Hello @hello hmm, it seems unlikely to me that every regular phone ever made has its IMEI in the Verizon DMD to be able to access the Verizon network. I still think the IMEI only needs to be in the DMD if that device wants to use the Verizon IoT platform. Have you tried different SIM cards? Thanks Felix
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  M5sTACK ATOM LITE with PbHUB and sensors: how do I set this up for ESPHOME?
  • gunnm

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  @gunnm I do not have any experience with ESPHOME, I use Arduino and write directly with C, C++! The PaHub (named after the 'Grove port A' I2C port in the M5Stack system) is an i2c expander. So if you have a bunch of i2c devices they can be plugged in and "polled" and read over a single i2c connection. The devices can even have the same i2c address, like having two ENV sensors, without conflict. Works very well. 'Polled' is where sensors are read one at a time and their value 'at that moment' is read and transmitted to the Atom The PbHub (also polled) on the other hand connects to your controller the same way, i2c, but hosts almost any 'discrete' sensor like a switch or a lamp (GPIO, PWM, Servo control, ADC sampling, RGB light control) but remember that it has to squish the signals of all those devices into one i2c channel, so some very high speed devices may jitter. Very short signals such as an encoder blip could be missed altogether, periodically. -Terry
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  Programmer wanted for ESPhome integration
  • DIYGuy

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  Don't know what to use
  • jerome83136

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  Hello @ajb2k3 I took a look on your UIFlow handbook for some examples on serial communication. I found this: It seems the code is almost the same than the one generated for me by UIFlow. The imported libraries are the same than the ones I have in my code: from m5stack import from m5ui import from uiflow import On the example provided by my reader's provider; they import this library: " #include <SoftwareSerial.h>" https://wiki.seeedstudio.com/Grove-125KHz_RFID_Reader/#play-with-arduino But I think this is the implémentation for Arduino and I guess the equivalent UIFlow libraries are loaded through this: from m5stack import from m5ui import from uiflow import Do I miss something ? On my side I think the reader works because when I bring a RFID tag close to it; the status led of the reader lights up. But I still receive nothing on the M5 core RX PIN Thank you for your help Best regards
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  Scales kit reports unstable weight
  • jerome83136

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  UIFLOW variable declaration issues - need help
  • jpilarski

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  I am still getting a "can't convert float to int" error whenever I use a variable in the by argument in the count with i from to block. If I use an integer block in by it works fine. If I set a variable to the same integer it gives me an error and if I convert to int or convert to float I get the same error. If I click on details it reads: File<'string'> line57 in <module> TypeError: can't convert float to int. This is a bummer since I need to use a variable in the by argument of the block. Any help would be appreciated
• B

  PIR motion sensor compatibility with LAN W5500 Proto Module
  • btrex

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  Hello @btrex not sure I understand why the LAN module removes port B. Do you mean the LAN module uses the GPIOs normally used for port B? Anyways, if you are using an M5Core2 device this module might help. And for an M5Stack device the bus module might be helpful as it exposes all pins. Thanks Felix
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  Problems writing to SD Card
  • vsthose

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  @stoni99 , yes, I have the same issue with my "picky" M5Stack. Samsung 64GB EVO plus XC Speedclass 3 are working fine, but I can no longer find it on Amazon. Sometimes Sundisk 32GB V30 are working, but in the next insert they refuse to work. Is it really the card or the software?
• S

  http requests do not resolve local dns
  • sgu

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  @ajb2k3 This looks very nice, I'll try it out. Thanks for your post !
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  RFID. How to reach maximum distance?
  • Oleksii

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  Hi, About change "region": I implement the reader U107 (JRD-4035) with an USB to serial TTL UART interface (a TTL-232R-5V-PCB fron FTDI Chip) and can drive this reader with a serial terminal software as RealTerm (that supports frame of hex bytes) for simple tests (with Pyserial for a more evolved application). Then it is possible to check active "region" parameter, by send the command frame: 0xBB 0x00 0x08 0x00 0x00 0x08 0x7E. After a power On, the response is: BB 01 08 00 01 01 0B 7E corresponding to "China 900MHz" (01). We have to send the command: 0xBB 0x00 0x07 0x00 0x01 0x03 0x0B 0x7E to pass in "EU region", the reponse after the command: 0xBB 0x00 0x08 0x00 0x00 0x08 0x7E, is BB 01 08 00 01 03 0D 7E region parameter has well switched to "EU region" (03). (note: if the USB dongle is unplugged then plugged, the region parameter returns to '01') About documentation on this reader: I used this manual "https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/unit/uhf_rfid/MagicRF M100%26QM100_Firmware_manual_cn.pdf" and "translate Google tool" (the en version of the manual is not sufficient). Best, Thierry PS: the link between U107 and the FTDI interface module is: TXD/U107 to RXD/FTDI, RXD/U107 to TXD/FTDI, 5V to VCC and GND to GND.
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  M5Paper - Flickering when updating screen
  • BBulMushroom

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  Hello @ajb2k3 thank you for the valuable reminder about the screen refresh rate. My above example is meant to show that it is possible to do a refresh w/o flickering even after a shutdown. Thanks Felix
• K

  Error : can't create thread
  • kawabatapaper

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  Thank you for your message. I posted my program. I got an error in the same time several times in this program. So, I measured the sensor value every 5 seconds, but I extended it every 10 seconds. I don't know if that was good, but so far it hasn't stopped for 3days. Please let me know if there is anything else you know.
• S

  I don't know how to send a lot of data per time by BLE(Bluetooth low energy)
  • stackyarou

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  Hello @stackyarou it looks like the limiting factor is the MTU which by default is set to 23 bytes. I've tried to set a higher MTU on both sides using BLEDevice::setMTU(40);, but it did not help. I read somewhere that 23 bytes is the maximum for BLE 4.2 so maybe that is the reason? Thanks Felix
• O

  ECG Module13.2 AD8232 pin mapping
  • OfureAlakhume

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  Hello @OfureAlakhume the M5Stack M-Bus is described here and the ECG Module seems to use GPIO13, GPIO5, 5 V and GND. Thanks Felix
• R

  Keyboard Input (bluetooth keyboard, USB keyboard)?
  keyboard usb bluetooth • • rodberry

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  We have the same problem, I might take a look at the replies
• G

  Remove Default apps from m5 core
  • ganeyvim

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• 

  UnitV2 Linux Firmware?
  • Asmodev

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  A

  I am in the same situation, I ask for more details thank you in advance
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  SK6812 RGBW
  • Henry Schmidt

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  I heard from my supplier that SK6812RGBW has been stopped production and updated to SC6812RGBW,SC6812RGBW quanlity is better than SK6812RGBW. Here is SC6812RGBW led datasheet:http://www.normandled.com/upload/202102/SC6812RGBW LED Datasheet.pdf