Hello @k33g in the M5Stack world there are 3 different Groove ports (A - red, B - black and C - blue) for different types of units. PORT                 PIN         Note: PORT-A(Red)    G21/22  I2C PORT-B(Black) G26/36  DAC/ADC PORT-C(Blue)   G16/17  UART The Groove port built into M5Stack (Gray, Fire, Basic, etc.) is port A (red). However the watering unit needs to be connected to port B (black) for the example to work. Note: Groove port B (black) and port C (blue) are available on the M5GO Bottom. Thanks Felix

@robojax I have this one installed: https://github.com/FastLED/FastLED and have no problem build/compile factory test in Arduino.

@felmue Thanks for your reply. I found the table below on the official M5Stack (https://docs.m5stack.com/#/en/unit/pbhub?id=pinmap) and started from there. That's why I thought all ports had the same functionality .... [image: 1617097248770-4ac4b932-044b-4d40-ac0b-9f82a9bf5dee-afbeelding-resized.png]

Hello @madaerodog no, afaik the display doesn't have any internal memory that would need erasing. I am afraid something got broken or dislodged within your M5Core2, but since you wrote you won't be able to return it, the only thing that comes to mind you could try is to remove the small little white board labelled CORE 2, unscrew the bottom and disconnect the battery. Then try w/o battery and only with USB plugged in. Note: be careful when removing the bottom as the battery is taped to the bottom but plugged into the main board. Good luck! Felix

Same here. I tried this and this keep displyaing eCO2 400... Any idea? from m5stack import * from m5ui import * from uiflow import * import unit setScreenColor(0x111111) tvoc0 = unit.get(unit.TVOC, unit.PORTA) CVO = None MAX = None H2T = M5TextBox(53, 19, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0) H2 = M5TextBox(0, 19, "H2", lcd.FONT_Default, 0xFFFFFF, rotate=0) BT = M5TextBox(21, 48, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0) TVOCT = M5TextBox(63, 80, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0) BTVOCT = M5TextBox(72, 112, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0) eco2T = M5TextBox(63, 136, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0) B = M5TextBox(0, 48, "B.", lcd.FONT_Default, 0xFFFFFF, rotate=0) TVOC = M5TextBox(0, 80, "TVOC", lcd.FONT_Default, 0xFFFFFF, rotate=0) BTVOC = M5TextBox(0, 112, "B. TVOC", lcd.FONT_Default, 0xFFFFFF, rotate=0) eCO2 = M5TextBox(0, 136, "eCO2", lcd.FONT_Default, 0xFFFFFF, rotate=0) Ethanol = M5TextBox(0, 173, "Ethanol", lcd.FONT_Default, 0xFFFFFF, rotate=0) EthanolT = M5TextBox(62, 173, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0) MAX = 1400 tvoc0.set_iaq_baseline(35187, 35502) while True: H2T.setText(str(tvoc0.H2)) BT.setText(str(tvoc0.get_iaq_baseline())) TVOCT.setText(str(tvoc0.TVOC)) BTVOCT.setText(str(tvoc0.baseline_TVOC)) eco2T.setText(str(tvoc0.eCO2)) EthanolT.setText(str(tvoc0.Ethanol)) if (tvoc0.eCO2) > MAX: M5Led.on() speaker.sing(196, 1/2) M5Led.off() wait_ms(2)

@happyuser thanks to Felix : solution can be found in the other thread about M5Stack LAN W5500.

@hazo To solve the problem I connected the two internal i2c pull-up resistors to 5V. You need steady hands to cut the copper layer between R3 and C1. When done, solder a wire between R3 and 5V (on connector J1). That's all ;-)[image: 1614856952510-modified-adc-unit-resized.jpg]

Hello @teastain getting it to compile is probably as easy as replacing #include <M5StickC.h> with #include <M5StickCPlus.h>. The bigger issue is the larger screen size which will need to be adapted properly. If and when M5Stack engineers will fix that I have no idea. Sorry. Thanks Felix

I think my proble[image: 1614515970101-2tof.png] m is the same

This is available in the TFT_eSPI base class to canvas, but is not exposed to us. The following seems to work: int height = ((TFT_eSPI&)Canvas).fontHeight();

@powersoft, @ajb2k3 Thank you both for your answers. The board manager url found on https://docs.m5stack.com/#/en/arduino/arduino_development is apparently the old one and still does not contain the M5Paper board, but through the youtube video powersoft recommended I was able to find the correct url and everything works now as expected :)