Driver for the MLX90640 thermal camera
This driver depends on:
Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.
On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:
pip3 install adafruit-circuitpython-mlx90640
To install system-wide (this may be required in some cases):
sudo pip3 install adafruit-circuitpython-mlx90640
To install in a virtual environment in your current project:
mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-mlx90640
import time
import board
import busio
import adafruit_mlx90640
i2c = busio.I2C(board.SCL, board.SDA, frequency=800000)
mlx = adafruit_mlx90640.MLX90640(i2c)
print("MLX addr detected on I2C", [hex(i) for i in mlx.serial_number])
# if using higher refresh rates yields a 'too many retries' exception,
# try decreasing this value to work with certain pi/camera combinations
mlx.refresh_rate = adafruit_mlx90640.RefreshRate.REFRESH_2_HZ
frame = [0] * 768
while True:
try:
mlx.getFrame(frame)
except ValueError:
# these happen, no biggie - retry
continue
for h in range(24):
for w in range(32):
t = frame[h*32 + w]
print("%0.1f, " % t, end="")
print()
print()
API documentation for this library can be found on Read the Docs.
For information on building library documentation, please check out this guide.
Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.