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pimoroni / explorer-hat

Python library for Explorer HAT
https://shop.pimoroni.com/products/explorer-hat
MIT License
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Segmentation fault after running motor script #32

Closed raspberrypieman closed 6 years ago

raspberrypieman commented 7 years ago

Intermittently, I am getting "Segmentation fault" immediately after running this script: import time import explorerhat as eh

eh.motor.one.forwards()
eh.motor.two.forwards()
time.sleep(5)
eh.motor.one.forwards(0)
eh.motor.two.forwards(0)

(from https://learn.pimoroni.com/tutorial/sandyj/firefly-light)

Here's what it looks like at the command line: pi@raspberrypi:~/projects/ExplorerPhat $ python testMotors.py Explorer pHAT detected...

Explorer HAT exiting cleanly, please wait...
Stopping flashy things...
Stopping user tasks...
Cleaning up...
Goodbye!
Segmentation fault

What is this trying to tell me? Should I be worried?

Regards, Martyn

Gadgetoid commented 7 years ago

This is nothing to worry about, although I should probably get to the bottom of why it happens.

dandrews7396 commented 7 years ago

I may be getting the wrong end of the stick here, but would if you're writing out the same speed to both motors, would you not be better to use:

eh.motor.forward()
time.sleep(5)
eh.motor.stop()
patboul commented 7 years ago

I solved it. Got the same problem, and worse, the pi was freezing after running the test.py script a few time. The default version of Python was the cause. I changed it python 3.4 using the following instructions: https://linuxconfig.org/how-to-change-from-default-to-alternative-python-version-on-debian-linux