hybridgroup.gobot/examples/firmata_motor.go

//go:build example
// +build example

//
// Do not build by default.

/*
 How to run
 Pass serial port to use as the first param:

	go run examples/firmata_motor.go /dev/ttyACM0
*/

package main

import (
	"fmt"
	"os"
	"time"

	"gobot.io/x/gobot/v2"
	"gobot.io/x/gobot/v2/drivers/gpio"
	"gobot.io/x/gobot/v2/platforms/firmata"
)

func main() {
	firmataAdaptor := firmata.NewAdaptor(os.Args[1])
	motor := gpio.NewMotorDriver(firmataAdaptor, "3")

	work := func() {
		speed := byte(0)
		fadeAmount := byte(15)

		gobot.Every(100*time.Millisecond, func() {
			if err := motor.SetSpeed(speed); err != nil {
				fmt.Println(err)
			}
			speed = speed + fadeAmount
			if speed == 0 || speed == 255 {
				fadeAmount = -fadeAmount
			}
		})
	}

	robot := gobot.NewRobot("motorBot",
		[]gobot.Connection{firmataAdaptor},
		[]gobot.Device{motor},
		work,
	)

	if err := robot.Start(); err != nil {
		panic(err)
	}
}