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pxt-ev3/docs/reference/brick/battery-property.md
Peli de Halleux 87a65aa38f
battery properties (#903) 
* Battery params

* move category

* cleanup

* use property

* fix level

* fix battery computation

* fix level comp

* docs
2019-09-04 12:56:45 -07:00

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battery Property

Return the information about the battery

brick.batteryInfo(BatteryProperty.Level)

Parameters

  • property: the kind of information

Returns

  • a number which represents the value of the property requested.

Example

Show the battery level percentage on the screen. Also, show a green light if the battery level is above 15%. If the battery level is below 15% but above 5%, show a orange light. But, if the battery level is below 5%, show a pulsing red light.

let battery = 0;
forever(function() {
    brick.showString("Battery level:", 1)
    brick.showNumber(battery, 2)
    battery = brick.batteryInfo(BatteryProperty.Level);
    if (battery > 15)
    {
        brick.setStatusLight(StatusLight.Green);
    } else if (battery > 5) {
        brick.setStatusLight(StatusLight.Orange);
    } else {
        brick.setStatusLight(StatusLight.RedPulse)
    }
    pause(30000)
})

Or see all the values

forever(function () {
    brick.showValue("bat V", brick.batteryInfo(BatteryProperty.Voltage), 1)
    brick.showValue("bat %", brick.batteryInfo(BatteryProperty.Level), 2)
    brick.showValue("bat I", brick.batteryInfo(BatteryProperty.Current), 3)
})