You measure acceleration with the milli-g, which is 1/1000 of a g. A g is as much acceleration as you get from Earth’s gravity.
Acceleration
Get the acceleration value (milli g-force) in one of three dimensions, or the combined force in all directions (x, y, and z).
Find the acceleration of the micro:bit (how fast it is speeding up or slowing down).
input.acceleration(Dimension.X);
Watch this video to learn how the accelerometer on the micro:bit works:
Parameters
- dimension: the direction you are checking for acceleration, or the total strength of force.
x
: acceleration in the left and right direction.
y
: acceleration in the forward and backward direction.
z
: acceleration in the up and down direction.
strength
: the resulting strength of acceleration from all three dimensions (directions).
Returns
- a number that means the amount of acceleration. When the micro:bit is lying flat on a surface with the screen pointing up,
x
is0
,y
is0
,z
is-1023
, andstrength
is1023
.
Example: bar chart
This example shows the acceleration of the micro:bit with a bar graph.
basic.forever(() => {
led.plotBarGraph(input.acceleration(Dimension.X), 1023)
})
Example: quake meter
Every 5 seconds, with the micro:bit facing upward on a flat surface, show how much the earth is shaking (if at all).
basic.forever(() => {
basic.showNumber(input.acceleration(Dimension.Strength))
basic.pause(5000)
})