12. Input Devices

12.8 Probe an input device’s analog levels and digital signals(as group assignment)

I checked analog output levels of the micro:bit on-board accelerometer(LSM303AGR) via PC’s serial port and serial monitor.

Result:

Cap.1(moving):

Cap.2(Static):

Analog levels(lower/upper limit): -2048 to 2048 (milli-g) for x/y/z axis
Digital signals: N/A

It seems that gravitational acceleration are detected in z axis(See Cap.2).

Javascript program for micro:bit:

basic.forever(() => {
    serial.writeValue(“X”, input.acceleration(Dimension.X))
    serial.writeValue(“Y”, input.acceleration(Dimension.Y))
    serial.writeValue(“Z”, input.acceleration(Dimension.Z))
    serial.writeLine(“----------“)
    basic.pause(500)
})

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Last update: June 29, 2022