checkpoint_5db.py

from webiopi.devices.sensor import DS18S20
import datetime
import pylab
import math

# sensors found with "ls /sys/bus/w1/devices/"
tmp0 = DS18S20(slave="10-000802de0ee7") 
tmp1 = DS18S20(slave="10-000802de4b20")

N = 50

y0 = [0.0]*N
y1 = [0.0]*N

for i in range(N):
  y0[i] = tmp0.getCelsius()
  y1[i] = tmp1.getCelsius()

pylab.hist((y0,y1), N, range=[y0[0] - 0.2,y0[0] + .2])
pylab.xlabel('Temperature')
pylab.ylabel('Frequency')
pylab.title('Temperature vs Frequency')
pylab.savefig('tempurature_hist.png')
pylab.show()