How to stop on ongoing motor motion using another condition? #1621
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This was asked via email, so I've opened a discussion here so everyone can see the possible answer, and share other solutions.
As a concrete example, let's say we want to rotate motor A for 3600 degrees (10 rotations), but stop earlier if we see an obstacle or the motor gets stuck, so we don't keep waiting forever. |
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Another way of phrasing this more systematically, is to say we want to rotate the motor
... whichever comes first. There are a few solutions. The easy way with Pybricks You can implement this quite literally with the multitask block, and set it to complete when one task finishes: It will do three tasks at once: rotate, wait for stall, and wait for sensor. It completes when one of them completes, which is exactly what we wanted! Then the program continues with the rest, which is just a sound in this case. The hard way 1 (synchronously using classic apps/solutions) In the classic solution, you could:
The hard way 2 (asynchronously using classic apps/solutions)
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Thank you! We will give this a try! |
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Another way of phrasing this more systematically, is to say we want to rotate the motor
... whichever comes first.
There are a few solutions.
The easy way with Pybricks
You can implement this quite literally with the multitask block, and set it to complete when one task finishes:
It will do three tasks at once: rotate, wait for stall, and wait for sensor. It completes when one of them completes, which is exactly what we wanted!
Then the program continues with the rest, which is just a sound in this case.
The hard way 1 (synchronously using classic apps/solutions)
In the classic soluti…