Using a QT PY (Haxpress), Sensor, and OLED

qt-py-sensor-oled.py

import time
import board
import busio
import adafruit_tlv493d
import math
import displayio
import adafruit_displayio_ssd1306
import terminalio
from adafruit_display_text import label

WIDTH = 128
HEIGHT = 32  # Change to 64 if needed

displayio.release_displays()

i2c = board.I2C()
tlv = adafruit_tlv493d.TLV493D(i2c)
display_bus = displayio.I2CDisplay(i2c, device_address=0x3c)
display = adafruit_displayio_ssd1306.SSD1306(display_bus, width=128, height=32)

splash = displayio.Group(max_size=10)
display.show(splash)

# Draw a labels
text = "           "
x_label = label.Label(terminalio.FONT, text=text, color=0xFFFFFF, x=0, y=4)
y_label = label.Label(terminalio.FONT, text=text, color=0xFFFFFF, x=0, y=15)
z_label = label.Label(terminalio.FONT, text=text, color=0xFFFFFF, x=0, y=26)
splash.append(x_label)
splash.append(y_label)
splash.append(z_label)


while True:

    x_label.text = (f"x: {tlv.magnetic[0]}")
    y_label.text = (f"y: {tlv.magnetic[1]}")
    z_label.text = (f"z: {tlv.magnetic[2]}")

    print("X: %s, Y: %s, Z: %s mT" % tlv.magnetic)
    #time.sleep(.1)

import board
from displayio import (
    FourWire,
    Group,
    release_displays,
)
import terminalio
from adafruit_display_text import label
from adafruit_displayio_ssd1306 import SSD1306
# import adafruit_bme280

release_displays()

oled_reset = board.D9

spi = board.SPI()
oled_cs = board.D5
oled_dc = board.D6
display_bus = FourWire(
    spi,
    command=oled_dc,
    chip_select=oled_cs,
    reset=oled_reset,
    baudrate=24_000_000,
)

WIDTH = 128
HEIGHT = 32

display = SSD1306(
    display_bus,
    width=WIDTH,
    height=HEIGHT,
)

splash = Group(max_size=10)
display.show(splash)

text = 'Hello World!'
text_area = label.Label(
    terminalio.FONT,
    text=text,
    color=0xFFFFFF,
    x=0,
    y=3,
)
splash.append(text_area)

while True:
    pass

This works. Then uncomment line 10, and

Auto-reload is on. Simply save files over USB to run them or enter REPL to disable.
code.py output:
Traceback (most recent call last):
  File "code.py", line 10, in <module>
  File "adafruit_bme280.py", line 507, in <module>
MemoryError: