launch the hello world from the repl

launch-hello-world-from-repl.clj

(def device-board "/dev/ttyACM0")

;; this is a limitation on the underlying lib clodiuno uses. Indeed, it searches only for /dev/ttySxx serial devices
;; and on ubuntu GNU/Linux it's named /dev/ACM0
(System/setProperty "gnu.io.rxtx.SerialPorts" device-board)

;; now declaring the board
(def board (arduino :firmata device-board))

;; the led must be set in output mode
(pin-mode board pin-led OUTPUT)

;; Now the heart of the program
(write-morse board "hello world")

;; just to show you that it works (as almost everybody knows at least that sos is 3 short 3 long 3 short)
(write-morse board "sos")

;; do not forget to free the board
(close board)