Help with assignment

[Tom.mannix29]

I am making an assignment using micropython, i am making a radar gun that uses the accelerometer on one microbit and sends the speed to another microbit using the radio function. Could someone please tell me why this code is not working like i want it to.
from microbit import *
import radio
radio.on()
radio.config(group=23)
while True:
x = accelerometer.get_values()
if x > 1000:
if x <= 100:
display.scroll('10km/hr')
sleep(5000)
elif x <= 200:
display.scroll('20km/hr')
sleep(5000)
elif x <= 300:
display.scroll('30km/hr')
sleep(5000)
elif x <= 400:
display.scroll('40km/hr')
sleep(5000)
elif x <= 500:
display.scroll('50km/hr')
sleep(5000)
elif x <= 600:
display.scroll('60km/hr')
sleep(5000)
elif x <= 700:
display.scroll('70km/hr')
sleep(5000)
elif x <= 800:
display.scroll('80km/hr')
sleep(5000)
elif x <= 900:
display.scroll('90km/hr')
sleep(5000)
elif x > 1000:
display.scroll('max')
sleep(5000)
else:
display.scroll("under")

[dhylands]

Without indentation, it's hard to tell exactly what your code is.

But these two lines look suspicious to me:

Code: Select all

if x > 1000: 
if x <= 100: 

If the second if is inside the first if (this is the only way I can see that this code would be valid python), then the second if will never be true.

[pythoncoder]

I'm puzzled The accelerometer produces acceleration values. To derive velocity from acceleration you surely need to perform an integration.

[Lysenko]

I'm puzzled The accelerometer produces acceleration values. To derive velocity from acceleration you surely need to perform an integration.

It's not an instant value either. x = 1024 = 1g ~= 35kph/s

This smells very much like a case of "not even wrong".

[pythoncoder]

...This smells very much like a case of "not even wrong".

Quite I could have written a screed on the actual requirements and the probability of achieving any semblance of accuracy, but the first step is to get the dimensional analysis looking plausible

[rhubarbdog]

Bug 1: x=accelerometer.get_values()
Should read x=accelerometer.get_x()

Bug 2:aswell as display.scroll(...) you need to use radio.send("message") also a consumer micro:bit will need message =radio.receive()

Are [code] [/code] tags not valid on this BB