Control your LEGO® Power Functions motors using your micro:bit or Calliope-Mini, an infrared LED and MakeCode. This extension turns your device into a remote control for your Power Functions devices.
A project using this extension is documented on hackster.io
Open MakeCode and select '+ Extensions' in the 'Advanced' menu. You need to enter our project URL https://github.com/brabl2/pxt-powerfunctions in the search field, hit return and then select the powerfunctions extension.
Configures the infrared LED analog pin. Using hardware PWM mode. A 940 nm emitting diode is required.
powerfunctions.connectIrLed(AnalogPin.P0)
pin
- analog pin with an attached IR-emitting LED
Configures the infrared LED digital pin. Using software bit-bang mode. A 940 nm emitting diode is required.
powerfunctions.connectIrLed(DigitalPin.P0, PowerFunctionMicroBitVer.Ver2)
pin
- digital pin with an attached IR-emitting LEDver
- micro:bit version
Configures send count and delay (the IR message is transmitted count-times with delay between messages).
Sending of the complete message in default setup (count
= five-times and delay
= delay_normal) can take around 0.8 second in worst case.
Setting these parameters to values different than default can speed-up data sending at cost of lower reliability.
Sending of the complete message in short setup (count
= five-times and delay
= delay_short) can take around 0.16 second in worst case.
powerfunctions.cfgSendCountDelay(PowerFunctionSendCount.five_times, PowerFunctionSendDelay.delay_normal)
count
- the IR message is transmitted count-timesdelay
- the delay between messages. It is safe to set this parameter to 'delay_short' in case of single LEGO® IR Receiver.
Configures a motor direction.
powerfunctions.cfgMotorDirectionCh(PowerFunctionsOutput.Red, 1, PowerFunctionsDirection.Right)
motor
- the motorchannel
- the channel of the motor from1
to4
direction
- the direction of the motor
Configures zero speed behaviour of the motor (float or brake).
powerfunctions.cfgMotorSpeedZeroCh(PowerFunctionsOutput.Red, 1, PowerFunctionSpeedZero.speed_0_brake)
motor
- the motorchannel
- the channel of the motor from1
to4
behaviour
- the behaviour of the motor when speed is set to zero (float or brake)
Increments motor speed.
powerfunctions.incCh(PowerFunctionsOutput.Red, 1)
motor
- the motorchannel
- the channel of the motor from1
to4
Decrements motor speed.
powerfunctions.decCh(PowerFunctionsOutput.Red, 1)
motor
- the motorchannel
- the channel of the motor from1
to4
Sets the speed of a motor.
powerfunctions.setSpeedCh(PowerFunctionsOutput.Red, 1, 3)
motor
- the motorchannel
- the channel of the motor from1
to4
speed
- the speed of the motor from-7
to7
Brakes then float. The motor's power is quickly reversed and thus the motor will stop abruptly.
powerfunctions.brakeCh(PowerFunctionsOutput.Red, 1)
motor
- the motorchannel
- the channel of the motor from1
to4
Floats a motor to stop. The motor's power is switched off and thus the motor will roll to a stop.
powerfunctions.floatCh(PowerFunctionsOutput.Red, 1)
motor
- the motorchannel
- the channel of the motor from1
to4
Sets the speed of a motor.
powerfunctions.setSpeed(PowerFunctionsMotor.Red1, 3)
motor
- the motorspeed
- the speed of the motor from-7
to7
.
Brakes then float. The motor's power is quickly reversed and thus the motor will stop abruptly.
powerfunctions.brake(PowerFunctionsMotor.Red1)
motor
- the motor
Floats a motor to stop. The motor's power is switched off and thus the motor will roll to a stop.
powerfunctions.float(PowerFunctionsMotor.Red1)
motor
- the motor
Configures a motor direction.
powerfunctions.setMotorDirection(PowerFunctionsMotor.Red1, PowerFunctionsDirection.Right)
motor
- the motordirection
- the direction of the motor
basic.showIcon(IconNames.Heart);
powerfunctions.connectIrLed(AnalogPin.P1);
powerfunctions.cfgMotorDirectionCh(PowerFunctionsOutput.Blue, 1, PowerFunctionsDirection.Right);
input.onButtonPressed(Button.A, () => {
powerfunctions.setSpeedCh(PowerFunctionsOutput.Blue, 1, 3);
});
input.onButtonPressed(Button.B, () => {
powerfunctions.floatCh(PowerFunctionsOutput.Blue, 1);
});
basic.forever(() => {
led.plotBarGraph(input.lightLevel(), 255);
if (input.lightLevel() > 200) {
powerfunctions.floatCh(PowerFunctionsOutput.Blue, 1);
basic.pause(5000);
powerfunctions.setSpeedCh(PowerFunctionsOutput.Blue, 1, 2);
basic.pause(3000);
}
});
LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this project.
Copyright (C) 2017-2020 Philipp Henkel
Licensed under the MIT License (MIT). See LICENSE file for more details.
- for PXT/microbit