Units

• 

  How to address serial on ATOM Matrix
  • ShotokuTech

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  @shotokutech You can use the USB-C port as a serial monitor (for debug or Micropython REPL). There is also a Grove port that can be used for I2C, I/O, or UART. Also there are multiple GPIO ports on the bottom: G19, G21, G22, G23, G25, G33
• P

  RoverC and JoyC
  • Pictavius

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  I have a few related questions. All are related to charging the M5StickC, JoyC and RoverC and their drain during use. Given that RoverC and JoyC need an M5Stick to be connected to be charged and all have the devices have batteries in them and the batteries in each set (M5StickC paired with either JoyC or RoverC) differ in capacity. How Do We know: State of Charge of the batteries in either set? When To disconnect the charger? (batteries fully charged) and Which of the two batteries in each set is being drained during use( M5Stick's or Hat's)?
• 

  M5StickC restore factory demo firmware
  • ShotokuTech

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  @shotokutech said in M5StickC restore factory demo firmware: Good day. I have spent a little while searching the forums before posting this question. Can you please advise how I can restore the factory demo firmware on the M5StickC after I flash UIFlow firmware and load other programs. I hate to depart from the starting point, without knowing how to get back. Thanks in advance. Hello , go to the documentation page of M5Stack to M5StickC (https://docs.m5stack.com/#/en/core/m5stickc) go here to EXAMPLE there load the file (M5StickC facory test code) this you write with the Arduino software into the M5StickC and you have the M5StickC back in its original state with factory demo firmware. skink
• 

  TF sensor get always the same value
  • M5StickFreakler

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  TF sensor? Could it be that memory is filling up and not getting cleared out?
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  RoverC, schematics and pinout?
  • gearwalker

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  the RoverC bottom don't provide the schematic now. you could in this page find the RoverC most info, and pins used info.
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  NCIR Hat UIFlow Demo Not Working
  • iwanzf

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  Hi @david-longley , We will fix it at V1.6.2(Next Week). Have a nice day.
• O

  M5StickC and 18650C hat problem
  • OS88

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• 

  [Solved] UnitV unable to find april-tags
  • hague

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  @hague thanks for the info that's a newer version than I have cheers
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  UnitV Barcode scanning
  • puijkh

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  Hi, Maybe flipping the sensor image will fix this: sensor.set_vflip(1) This was the solution for my problem with april tags and QR-Codes.
• O

  M5StickC 18650C hat grove port
  • OS88

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  @os88 attention the back site, you can see the reserved hole, you can open it, and then pass the Grove cable.
• J

  I2C slave mode doesn't work for UnitV Stick
  • jani

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  I2C problem seems from the maixpy. maybe you could commit a issues to maixpy github
• S

  EXT.IO Unit ERROR problem
  ext.io import unit • • samjami

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  thank you feedback. we will fix this bug as soon as possible
• K

  Looking for the Base Firmware for Unit-V
  • kylebuttress

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  the M5StickV/UnitV burn firmware tutorial https://docs.m5stack.com/#/en/quick_start/m5stickv/m5stickv_quick_start
• 

  How to use two ENV units with PaHUB (UIFlow)
  • liemph

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  from m5stack import * from m5ui import * from uiflow import * import hat import unit import hat setScreenColor(0x111111) pbhub0 = unit.get(unit.PBHUB, unit.PORTA) hat_pir0 = hat.get(hat.PIR) label0 = M5TextBox(13, 8, "PIR Hat", lcd.FONT_Default,0xFFFFFF, rotate=0) label1 = M5TextBox(12, 63, "PbHUB", lcd.FONT_Default,0xFFFFFF, rotate=0) label2 = M5TextBox(34, 34, "0", lcd.FONT_Default,0xFFFFFF, rotate=0) label3 = M5TextBox(0, 83, "+Light Unit", lcd.FONT_Default,0xFFFFFF, rotate=0) label4 = M5TextBox(26, 109, "0", lcd.FONT_Default,0xFFFFFF, rotate=0) while True: label2.setText(str(hat_pir0.state)) label4.setText(str(pbhub0.analogRead(0))) wait(1) wait_ms(2)
• V

  Issues interfacing MFRC522 (RFID) with M5Stack
  • volatus

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  C

  @volatus I2C # SPI You forgot to use #include <SPI.h> in your arduino code. So the code compiled for I2C interface. Beware using the wrong pins for external SPI deviceon your M5Stack. You may brick your display. Interfacing to an external a SPI peripheral device you should use pins which are not in conflict with the pins used for M5Stack internals, as I already wrote in my comments on SPI Interfacing a few days ago: http://community.m5stack.com/topic/1845/micropython-spi/8 You should keep it as they are saying on my spec sheet for the Heltec ESP32 LoRa board: "Pins used by on board OLED or LoRA must not be used for other purpose unless you know what you are doing ! Accordingly, on the M5Stack you should only use the pins marked in blue.
• M

  M5Atom and Grove Sensors
  • MadGeometer

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  Thanks for your help guys, I'll give this all a shot!
• J

  PbHUB CH4 and CH5 cannot set to digital read?
  • jollawat

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• K

  [Solved]M5Stack, Arduino, RFID Module example needed
  • Kees

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  Hi, Sorry for pulling this olde thread up. I really need an Arduino example on how to read and write I can't seem to find any examples on that. Best regards, Christian
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  M5StickC with PAM8303 Speaker Hat
  • generalTso

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  Here is an example how to do it (The PAM8303 chip is mono, the PAM8403 is stereo): https://www.youtube.com/watch?v=xotWNWUh7i4 https://www.xtronical.com/basics/audio/dacs-on-esp32/
• K

  Unit-V Firmware version
  • kylebuttress

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  we will update the firmware, as soon as possible