Last active
November 5, 2017 19:19
-
-
Save logicalguess/4f4391c9eae9d2528cd3313ce26809fd to your computer and use it in GitHub Desktop.
Gobot that blinks an LED and reads the voltage of a pin on an Arduino microcontroller connected to a Raspberry Pi. The code is built for the Raspberry Pi and transferred to it.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| package main | |
| import ( | |
| "fmt" | |
| "gobot.io/x/gobot" | |
| "gobot.io/x/gobot/api" | |
| "gobot.io/x/gobot/platforms/firmata" | |
| "gobot.io/x/gobot/drivers/gpio" | |
| "time" | |
| "os" | |
| ) | |
| // env GOOS=linux GOARCH=arm GOARM=5 go build | |
| // scp combo pi@10.0.1.7:/home/pi/Arduino | |
| func main() { | |
| master := gobot.NewMaster() | |
| api.NewAPI(master).Start() | |
| // /dev/tty.usbmodem1411" on my Mac (used in development) | |
| // /dev/ttyACM0 on Raspberry Pi | |
| f := firmata.NewAdaptor(os.Args[1]) | |
| cmd := func(params map[string]interface{}) interface{} { | |
| val, err := f.AnalogRead("1") | |
| if err != nil { | |
| fmt.Println(err) | |
| panic(err) | |
| } | |
| voltage := (float64(val) * 5) / 1024 // if using 3.3V replace 5 with 3.3 | |
| tempC := (voltage - 0.5) * 100 | |
| tempF := (tempC * 9 / 5) + 32 | |
| fmt.Printf("%.2f°C\n", tempC) | |
| fmt.Printf("%.2f°F\n", tempF) | |
| return fmt.Sprintf("%.2f°F\n", tempF) | |
| } | |
| led := gpio.NewLedDriver(f, "13") | |
| work := func() { | |
| gobot.Every(1*time.Second, func() { | |
| led.Toggle() | |
| }) | |
| } | |
| blinker := gobot.NewRobot("blinker", | |
| []gobot.Connection{f}, | |
| []gobot.Device{led}, | |
| work, | |
| ) | |
| blinker.AddCommand("Read Temperature", cmd) | |
| master.AddRobot(blinker) | |
| master.Start() | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment