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)