Rotation, Roll sensor, that is adjustable. A buzzer that will let you know when the RC truck is about to roll over.

I would like to know the steps on how to capture the role of an RC vehicle, before it is about to roll on its side. The micro:bit can be placed on the RC vehicle on the roll axis.

Micro:bit will be placed on the RC truck, Roll axis . Then A switch will Capture 0 value of the roll value. Then the RC truck will be tilted at 90° or whatever the role value is, before it tips over.

Here is what I have on my micro:bit, to capture the data when the air switch is pressed. And when the B button is pressed down, it captures the angle of the roll.

what I don’t know is how to include the buzzer so when it gets to the point of the data captured on the B switch, it will start buzzing.

There is a YouTube example.

www.youtube.com/watch

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beacon_dave 10 days ago +1

One way might be: In the main program loop, forever compare the current rotation angle with the tilt value stored by button B and if it is greater than or equal to, then turn the buzzer on, else turn…

0 beacon_dave 10 days ago

One way might be:

In the main program loop, forever compare the current rotation angle with the tilt value stored by button B and if it is greater than or equal to, then turn the buzzer on, else turn the buzzer off.

There is an example here which may help:
https://makecode.microbit.org/reference/input/rotation

Note that you may want to disable the buzzer until button B has stored the desired tilt threshold value otherwise the buzzer may start sounding before button B has been set. You could also initialise the tilt threshold value to a very high tilt value and then pressing button B effectively lowers it.

Also you appear to be measuring pitch and not roll in your code. This may be intentional due to the orientation of the micro:bit on the vehicle.

If you are just starting out with the micro:bit then you may be interested in getting hold of a copy of this book:
https://www.mheducation.co.uk/save-the-world-with-code-20-fun-projects-for-all-ages-using-raspberry-pi-micro-bit-and-circuit-9781260457599-emea

or perhaps taking a look at the Physical Computing course on FutureLearn:
https://www.futurelearn.com/courses/build-a-physical-computing-prototype
where if I recall correctly, the final project is a remote control car using two micro:bits
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