Magnetic Force

Find the amount of magnetic force (the strength of a magnet) in one of the three directions.


The micro:bit measures magnetic force with microteslas.

You are asked to calibrate the compass the first time run a program that uses the compass.


  • dimension: this is the direction the micro:bit should measure magnetic force in: either Dimension.X (the left-right direction), Dimension.Y (the forward/backward direction), or Dimension.Z (the up/down direction)


  • a number of microteslas that means the strength of the magnet


Create a metal detector my measuring the strength of magnetic force in the X direction. Display a bar graph to show the current level of magnetic force measured by the magnetometer.

basic.forever(function() {
    led.plotBarGraph(input.magneticForce(Dimension.X) / 2000, 0)

See also

compass heading