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RASP-SENSE-HAT-ASTRO-PI-Débuter (voir la source)
Version du 26 août 2015 à 13:57
, 26 août 2015 à 13:57→Ressentir l'environnement
sense.show_message(msg, scroll_speed=0.05)</nowiki>
sense.show_message(msg, scroll_speed=0.05)</nowiki>
'''2.''' Click "File -- Save As", give your program a name e.g. {{fname|env.py}}, then press '''F5''' to run.
'''3.''' You could now use some colour to let the astronauts know whether conditions are within sensible ranges.
According to some [http://wsn.spaceflight.esa.int/docs/Factsheets/30%20ECLSS%20LR.pdf online documentation] (''ESA, anglais''), the International Space Station maintains these conditions at the following levels:
* Temperature (18.3 - 26.7 Celsius)
* Pressure (979 - 1027 millibars)
* Humidity (around 60%)
You could use an if statement in your code to check these conditions, and set a background colour for the scroll:
<nowiki>if t > 18.3 and t < 26.7:
bg = [0, 100, 0] # green
else:
bg = [100, 0, 0] # red</nowiki>
Your complete program would look like this:
<nowiki>from sense_hat import SenseHat
sense = SenseHat()
while True:
t = sense.get_temperature()
p = sense.get_pressure()
h = sense.get_humidity()
t = round(t, 1)
p = round(p, 1)
h = round(h, 1)
if t > 18.3 and t < 26.7:
bg = [0, 100, 0] # green
else:
bg = [100, 0, 0] # red
msg = "Temperature = %s, Pressure=%s, Humidity=%s" % (t, p, h)
sense.show_message(msg, scroll_speed=0.05, back_colour=bg)</nowiki>
'''4.''' Click "File -- Save As", give your program a name e.g. {{fname|scrolling_env.py}}, then press "F5" to run.
=== Idées ===
* Currently, the scrolling program only warns about abnormal temperature. Can you add the same behaviour for pressure and humidity?
* You could create a simple graphical thermometer which outputs different colours / patterns depending on the temperature.
* If you haven't done so already, experiment with a bottle and the pressure sensor.
== Détecter les mouvements ==
[[Fichier:hat-sense-banner-05.jpg]]
== Tout mettre ensemble ==
[[Fichier:hat-sense-banner-06.jpg]]
{{RASP-SENSE-HAT-ASTRO-PI-TRAILER}}
{{RASP-SENSE-HAT-ASTRO-PI-TRAILER}}