LEDを消すことを行おうとして、ファームウェアの書き換えを行うとv3.0.0をダウンロードしました。 初めに何も変更せずにコンパイルを実行しようとしたところ以下のエラーが発生しました。 初心者なので初歩的なところの問題だと思うのですが、どうすればいいでしょうか？ OS:Mac OSX 10.12.13 arudino IDE: 1.0.6 ``` This report would have more information with "Show verbose output during compilation" enabled in File > Preferences. Arduino: 1.0.6 (Mac OS X), Board: "Arduino Uno" timer.c: In function 'timer_init': timer.c:45: error: 'TCCR4B' undeclared (first use in this function) timer.c:45: error: (Each undeclared identifier is reported only once timer.c:45: error: for each function it appears in.) timer.c:46: error: 'TCCR4A' undeclared (first use in this function) timer.c:47: error: 'TCCR4C' undeclared (first use in this function) timer.c:48: error: 'TCCR4D' undeclared (first use in this function) timer.c:49: error: 'TCCR4E' undeclared (first use in this function) timer.c:50: error: 'CS43' undeclared (first use in this function) timer.c:50: error: 'PSR4' undeclared (first use in this function) timer.c:53: error: 'OCR4C' undeclared (first use in this function) timer.c: In function 'timer_start': timer.c:59: error: 'TIFR4' undeclared (first use in this function) timer.c:59: error: 'TOV4' undeclared (first use in this function) timer.c:60: error: 'TCNT4' undeclared (first use in this function) timer.c:61: error: 'TIMSK4' undeclared (first use in this function) timer.c:61: error: 'TOIE4' undeclared (first use in this function) timer.c: In function 'timer_stop': timer.c:65: error: 'TIMSK4' undeclared (first use in this function) ```