<p>-라즈베리파이 키패드 보드</p>
<p>장치선택 : 12키</p>
<p>음원선택 : 10키</p>
<p>동작키 : 1키 &lt;--- 필요한지 생각해볼것</p>
<p>*키패드 참고 :&nbsp;<a href="https://blog.naver.com/compass1111/221288344824" target="_blank">https://blog.naver.com/compass1111/221288344824</a></p>
<p>*구글검색 : keypad schematic</p>
<p>&nbsp;</p>
<p>**Keypad 아두이노 관련블로그 링크 &gt;&gt;&nbsp;</p>
<p><a href="https://javalab.org/arduino_4x4_keypad_test/" target="_blank">https://javalab.org/arduino_4x4_keypad_test/</a></p>
<p><img src="https://javalab.org/wp-content/uploads/arduino_4x4_keypad_3.png" alt="" width="786" class="alignnone size-full wp-image-8454" style="border: none; margin: 5px 20px 20px 0px; padding: 0px; vertical-align: baseline; height: auto; max-width: 100%; clear: both; color: #222222; font-family: &quot;Open Sans&quot;, Arial, Helvetica, sans-serif; font-size: medium; text-align: -webkit-center; background-color: #ffffff;" />&nbsp;</p>