hybridgroup.gobot/examples/tinkerboard_motor.go

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//go:build example
// +build example
// Do not build by default.
package main
import (
"fmt"
"log"
"time"
"gobot.io/x/gobot/v2"
"gobot.io/x/gobot/v2/drivers/gpio"
"gobot.io/x/gobot/v2/platforms/tinkerboard"
)
// Wiring
// PWR Tinkerboard: 1 (+3.3V, VCC), 2(+5V), 6, 9, 14, 20 (GND)
// PWM Tinkerboard: header pin 33 (PWM2) or pin 32 (PWM3)
// Please decouple the PWM pin with an amplifier, e.g. a simple MOSFET (IRLZ34N, IRF530 etc.), a half H-bridge or
// just use a LED for the first tests.
func main() {
adaptor := tinkerboard.NewAdaptor()
motor := gpio.NewMotorDriver(adaptor, "32", gpio.WithMotorAnalog()) // gpio.WithMotorAnalog() is optional here
work := func() {
fmt.Println("first try full speed for 5 seconds...")
if err := motor.On(); err != nil {
log.Println(err)
}
time.Sleep(5 * time.Second)
fmt.Println("second switch off for 5 seconds...")
if err := motor.Off(); err != nil {
log.Println(err)
}
time.Sleep(5 * time.Second)
fmt.Println("finally fade in and out forever...")
speed := byte(0)
fadeAmount := byte(15)
gobot.Every(100*time.Millisecond, func() {
if err := motor.SetSpeed(speed); err != nil {
log.Println(err)
}
speed = speed + fadeAmount
if speed == 0 || speed == 255 {
fadeAmount = -fadeAmount
}
})
}
robot := gobot.NewRobot("motorBot",
[]gobot.Connection{adaptor},
[]gobot.Device{motor},
work,
)
if err := robot.Start(); err != nil {
panic(err)
}
}