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pm2.5 pm 2.5 pm10 pm25

pms5003

{{:arduino:pasted:20201130-215212.png}}

<code python>
import serial
import matplotlib.pyplot as plt
import numpy as np
from struct import unpack

s = serial.Serial(port='COM6',baudrate=9600)
plt.ion()
fig = plt.figure()
plt.grid()
plt.title('particale concentration in my room');

zz = np.array(0)

y1 = np.array(np.nan)
y2 = np.array(np.nan)
y3 = np.array(np.nan)

ax = fig.add_subplot(111)
line1, = ax.plot(zz, y1, 'r-', label='PM 1')
line2, = ax.plot(zz, y2, 'k-', label='PM 2.5')
line3, = ax.plot(zz, y3, 'g-', label='PM 10')
fig.show()
fig.legend()


while True:
    res = s.read(size=32)
    all_data = unpack('>BBHHHHHHHHHHHHHHH', res)
    # byte, byte,
    print(all_data)

    y1 = np.append(y1, all_data[2])
    y2 = np.append(y2, all_data[3])
    y3 = np.append(y3, all_data[4])

    x = np.arange(y1.shape[0])
    line1.set_xdata(x)
    line2.set_xdata(x)
    line3.set_xdata(x)
    line1.set_ydata(y1)
    line2.set_ydata(y2)
    line3.set_ydata(y3)
    fig.canvas.draw()
    fig.canvas.flush_events()
    plt.pause(0.05)
    v1 = np.min([np.nanmin(y1),np.nanmin(y2),np.nanmin(y3)])
    v2 = np.max([np.nanmax(y1),np.nanmax(y2),np.nanmax(y3)])

    ax.set(xlim=(x.min()-1, x.max()+1), ylim=(v1-1, v2+1))

s.close()
</code>

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