I have been following this tutorial - https://www.instructables.com/Thermal-Camera-AMG833-Raspberry-Pi/
It's working well, as shown. I can see graphical temperature reference in window.
The CODE:
from Adafruit_AMG88xx import Adafruit_AMG88xx
import pygame
import os
import math
import time
import numpy as np
from scipy.interpolate import griddata
from colour import Color
#low range of the sensor (this will be blue on the screen)
MINTEMP = 26
#high range of the sensor (this will be red on the screen)
MAXTEMP = 32
#how many color values we can have
COLORDEPTH = 1024
os.putenv('SDL_FBDEV', '/dev/fb1')
pygame.init()
#initialize the sensor
sensor = Adafruit_AMG88xx()
points = [(math.floor(ix / 8), (ix % 8)) for ix in range(0, 64)]
grid_x, grid_y = np.mgrid[0:7:32j, 0:7:32j]
#sensor is an 8x8 grid so lets do a square
height = 240
width = 240
#the list of colors we can choose from
blue = Color("indigo")
colors = list(blue.range_to(Color("red"), COLORDEPTH))
#create the array of colors
colors = [(int(c.red * 255), int(c.green * 255), int(c.blue * 255)) for c in colors]
displayPixelWidth = width / 30
displayPixelHeight = height / 30
lcd = pygame.display.set_mode((width, height))
lcd.fill((255,0,0))
pygame.display.update()
pygame.mouse.set_visible(False)
lcd.fill((0,0,0))
pygame.display.update()
#some utility functions
def constrain(val, min_val, max_val):
return min(max_val, max(min_val, val))
def map(x, in_min, in_max, out_min, out_max):
return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
#let the sensor initialize
time.sleep(.1)
while(1):
#read the pixels
pixels = sensor.readPixels()
pixels = [map(p, MINTEMP, MAXTEMP, 0, COLORDEPTH - 1) for p in pixels]
#perdorm interpolation
bicubic = griddata(points, pixels, (grid_x, grid_y), method='cubic')
#draw everything
for ix, row in enumerate(bicubic):
for jx, pixel in enumerate(row):
pygame.draw.rect(lcd, colors[constrain(int(pixel), 0, COLORDEPTH- 1)], (displayPixelHeight * ix, displayPixelWidth * jx, displayPixelHeight, displayPixelWidth))
pygame.display.update()
https://github.com/adafruit/Adafruit_AMG88xx_python/blob/master/examples/thermal_cam.py
But how can I print the highest measured temperature to the console, so I can work with that value later on?
Thanks
