Music Box One—Key Version

Language	English

Objective Here we build a music box. By a crash switch, you can play, pause and cut music. 600px Principle Detect two touch switches' status to trigger music playing, pause and cut. 600px Equipment Module Number Function mCookie-CoreUSB 1 Core board mCookie-Hub 1 Sensor pin board mCookie-Audio 1 Audio module mCookie-Amplifier 1 Amplifier module mCookie-BM 1 Battery management Microduino-Crash 2 Crash sensor Other Equipment: Two loudspeakers One cell of battery 600px Preperation Setup 1：Connect CoreUSB and PC/MAC with a USB cable, then open Arduino IDE. 600px Setup 2: Download program examples: music_box 600px Setup 3：Open downloaded program, choose the right board and COM port , download program. 600px Software Debugging Code description: Judge if the Crash's key is pressed for one part and send serial instructions to control Audio to play, pause and cut according to the status of the key for the other part. " audio.h "controls Audio files and "key.h" detects files when the key is pressed. The use of Audio serial port can be decided by jumper wires on the board. The default soft serial port is (2,3). <source lang="cpp"> #include <SoftwareSerial.h> SoftwareSerial mySerial(2, 3); // RX, TX #define AUDIO_PORT mySerial //#define AUDIO_PORT mySerial </source> Key controls pin definition int music1_Pin = 4; int music2_Pin = 6; Send serial instructions to control Audio's playing, pause or cut according to if the key is pressed. if (key_get(music1_Pin, 0)) { delay(200); play_pause = !play_pause; } if (play_change != play_pause) { play_change = play_pause; if (play_pause) audio_play(); else audio_pause(); } if (key_get(music2_Pin, 0)) audio_down(); Hardware Buildup Setup1：Connect two Crash switches to D4 and D6 pins of Sensorhub. 文件:Music boxz 4 6.JPG 800px Setup 2：Insert TF card into the slot of AudioShield. Setup 3：Stack Audio and AuidoShield, connect them to PC and then you can save MP3 files into TF card's root directory. Setup4：Connect two loudspeakers to Amplifier. Setup5：Stack Audio, AudioShield and Amplifier. 将Audio，Audio shield，Amplifier Setup6：Connect the activated battery box and BM. Setup7：Stack all modules without fixed order (Except that Audio, AudioShield and Amplifier have to be together). 600px Result Choosing to play, pause and cut songs via the crash switch. You can also build a beautiful shell for your project with LEGO since mCookie can be easily stacked with LEGO. 文件:Music boxz legao.JPG 800px Video