gobot.io/x/gobot/v2@v2.1.0/examples/firmata_motor.go (about)

     1  //go:build example
     2  // +build example
     3  
     4  //
     5  // Do not build by default.
     6  
     7  /*
     8   How to run
     9   Pass serial port to use as the first param:
    10  
    11  	go run examples/firmata_motor.go /dev/ttyACM0
    12  */
    13  
    14  package main
    15  
    16  import (
    17  	"os"
    18  	"time"
    19  
    20  	"gobot.io/x/gobot/v2"
    21  	"gobot.io/x/gobot/v2/drivers/gpio"
    22  	"gobot.io/x/gobot/v2/platforms/firmata"
    23  )
    24  
    25  func main() {
    26  	firmataAdaptor := firmata.NewAdaptor(os.Args[1])
    27  	motor := gpio.NewMotorDriver(firmataAdaptor, "3")
    28  
    29  	work := func() {
    30  		speed := byte(0)
    31  		fadeAmount := byte(15)
    32  
    33  		gobot.Every(100*time.Millisecond, func() {
    34  			motor.Speed(speed)
    35  			speed = speed + fadeAmount
    36  			if speed == 0 || speed == 255 {
    37  				fadeAmount = -fadeAmount
    38  			}
    39  		})
    40  	}
    41  
    42  	robot := gobot.NewRobot("motorBot",
    43  		[]gobot.Connection{firmataAdaptor},
    44  		[]gobot.Device{motor},
    45  		work,
    46  	)
    47  
    48  	robot.Start()
    49  }