Datasheet

sudo pip3 install adafruit-circuitpython-mlx90640

If your default Python is version 3 you may need to run 'pip' instead. Just make sure you aren't trying to use

CircuitPython on Python 2.x, it isn't supported!

CircuitPython & Python Usage

To demonstrate the usage of the sensor we'll run the mlx90640_simpletest.py program which prints the temperatures

or shows them as ASCII. As this example is too complicated to run from the REPL, you'll save the following code to your

board as code.py and connect to the serial console to see the output.

import time

import board

import busio

import adafruit_mlx90640

PRINT_TEMPERATURES = False

PRINT_ASCIIART = True

i2c = busio.I2C(board.SCL, board.SDA, frequency=800000)

mlx = adafruit_mlx90640.MLX90640(i2c)

print("MLX addr detected on I2C")

print([hex(i) for i in mlx.serial_number])

mlx.refresh_rate = adafruit_mlx90640.RefreshRate.REFRESH_2_HZ

frame = [0] * 768

while True:

stamp = time.monotonic()

try:

mlx.getFrame(frame)

except ValueError:

# these happen, no biggie - retry

continue

print("Read 2 frames in %0.2f s" % (time.monotonic()-stamp))

for h in range(24):

for w in range(32):

t = frame[h*32 + w]

if PRINT_TEMPERATURES:

print("%0.1f, " % t, end="")

if PRINT_ASCIIART:

c = '&'

# pylint: disable=multiple-statements

if t < 20: c = ' '

elif t < 23: c = '.'

elif t < 25: c = '-'

elif t < 27: c = '*'

elif t < 29: c = '+'

elif t < 31: c = 'x'

elif t < 33: c = '%'

elif t < 35: c = '#'

elif t < 37: c = 'X'

# pylint: enable=multiple-statements

print(c, end="")

print()