1304410487@qq.com：Created page with "{{Language| Music Box One(Light-sensitive version)}} {| style="width: 800px;" |- | ==Objective== We build a music box here. You can turn to different songs by opening the door..."

2015-10-20T09:27:18Z

Created page with "{{Language| Music Box One(Light-sensitive version)}} {| style="width: 800px;" |- | ==Objective== We build a music box here. You can turn to different songs by opening the door..."

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{{Language| Music Box One(Light-sensitive version)}}
{| style="width: 800px;"
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==Objective==
We build a music box here. You can turn to different songs by opening the door of the box and shut the door to stop the music.

==Principle==
We can detect the door's open or close via light-sensitive sensor. When opening the door, light is intense and it will trigger the change of songs or by closing the door, the music will be stopped.
[[File:music_boxz-light.jpg|600px|center]]

==Equipment==
{|class="wikitable"
|-
|Module||Number||Function
|-
|[[mCookie-CoreUSB]]||1||Core board
|-
|[[ mCookie-Hub]]||1||Sensor pin board
|-
|[[ mCookie-Audio]]||1||Audio module
|-
|[[ mCookie-Amplifier]]||1||Amplifier
|-
| [[mCookie-BM]]||1||Battery management
|-
| [[Microduino-Light]]||1||Light-sensitive sensor
|}

*Other Equipment:
**Two loudspeakers
**One cell of battery

[[File:music_boxz.jpg|600px|center|thumb]]
==Preparation==
*Setup 1：Connect CoreUSB and PC/MAC with a USB cable, then open Arduino IDE.
[[File:CoreUSB_Ble_pc.jpg|600px|center]]
* Setup 2:
Download program examples:
[https://github.com/Microduino/Microduino_Tutorials/tree/master/MCookie_Tutorial/music_box music_box_light]
[[File: _MusicBox_light_ino.jpg|600px|center]]
* Setup 3：Open downloaded program, select the right board and COM port, then click download.

[[File: _MusicBox_light_ino-ok.jpg|600px|center]]
==Software Debugging==
Code description: One part for detecting light intensity and the other part for sending serial instructions to control Audio playing, pause or cut according to brightness.
*" audio.h " controls Audio file.
*The use of Audio serial port is 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>
*Pre-set photosensitive trigger value. When light-sensitive value is bigger than the pre-set value, the door will open or it'll close.
Define pins of light-sensitive detection.
<source lang="cpp">
#define light_cm 300

#define light_pin A0
</source>
*When is detected value is bigger than pre-set value, it'll delay for 100 ms and then detect if the detected value is bigger than the pre-set value in case of shaking. If yes, then it'll execute cutting instruction " audio_down();". It'll execute instruction only once by True of False value of the "change".
<source lang="cpp">
if ( light_val > light_cm && !change)
{
if (millis() - time1 > 100)
{
light_val = analogRead(light_pin);
if (light_val > light_cm)
{
change = true;//True means the "if" condition will execute once.
off = false;
audio_down();
//audio_choose(1);
//audio_play();
}
time1 = millis();
}
}
</source>
*When the detected value is small than the pre-set one, it'll delay for 100ms and re-detect. Then, it'll execute pause instruction " audio_pause();" and achieve instruction once by the True or False value of "off".
<source lang="cpp">
if ( light_val > light_cm && !change)
{
if (millis() - time1 > 100)
{
light_val = analogRead(light_pin);
if (light_val > light_cm)
{
change = true;//True means the "if" condition above can execute one time.
off = false;
audio_down();
//audio_choose(1);
//audio_play();
}
time1 = millis();
}
}
</source>

==Hardware Debugging==
*Setup1：Connect the light-sensitive sensor to the A0 pin of Sensorhub.
[[file: music_boxz _4_6.JPG|thumb|800px|center]]
*Setup 2：Insert TF card into the slot of AudioShield.
[[File: _MusicBox_Joystick _TF.jpg|600px|center]]
*Setup 3：Stack Audio and AudioShield first, connect them to PC, then you can save MPS3 files into root directory of TF card.
[[File: _MusicBox_Joystick _song.jpg|600px|center]]
*Setup4：Connect two loudspeakers to Amplifier.
[[file: MusicBox_Joystick _song_speak.JPG|600px|center]]
*Setup5：Stack Audio, AudioShield and Amplifier together.
[[file: MusicBox_Joystick _3_speak.JPG|600px|center]]
*Setup6：Connect the activated battery box and BM.
[[File:CoreUSB_Ble_steup2.jpg|600px|center]]
*Setup7：Stack all modules without fixed order (Except that Audio, AudioShield and Amplifier should be together).
[[file: MusicBox_light _steup_ok.JPG|600px|center]]

==Result==
Open the music door and you can cut songs or close the door and stop the music. You can also build a beautiful LEGO shell since mCookie can be stacked with LEGO easily.

[[file: music_boxz_light _legao.JPG|thumb|800px|center]]

==Video==

|}

Music Box Light Control - 版本历史

1304410487@qq.com：Created page with "{{Language| Music Box One(Light-sensitive version)}} {| style="width: 800px;" |- | ==Objective== We build a music box here. You can turn to different songs by opening the door..."