查看“Microduino Ward Calling System”的源代码

{| style="width: 800px;"
|-
|


==Purpose==

The course will show you how to use Microduino to simulate a ward calling system.  

==Equipment==
{|class="wikitable"
|-
|Module||Number||Function
|-
|[[Microduino-Core]]||2||Core board 
|-
|[[Microduino-Core+]]||1||Core board 
|-
|[[Microduino-OLED]]||1||For display  
|-
|[[Microduino-Cube-S1]]||1||Extension board 
|-
|[[Microduino-USBTTL]] ||2||Program download 
|-
|[[Microduino-nRF24]] ||3||Wireless network 
|-
|[[Microduino-Amplifier]] ||1|| 
|-
|[[Microduino-SD]] ||1||Audio storage  
|}


*Other Equipment 
{|class="wikitable"
|-
|10KΩ resistor||Two
|-
|Breadboard jumper wire||One box
|-
|micro usb cable||One 
|-
|Button||Two 
|-
|Breadboard||One 
|-
|Loudspeaker||One 
|}

==Schematic==

[[File:hospitalCallSechmatic.png|600px|center|thumb]]

There are two senders—sender 1 and sender 2 in the picture—for patients to send signals. 

Modules to be stacked:  
*Microduino-Core
*Microduino-USBTTL
*Microduino-nRF24

One receiver for nurses to check for patient help. 

*Microduino-Core+
*Microduino-USBTTL
*Microduino-nRF24
*Microduino-Cube-S1
*Microduino-OLED

==Program==

[[https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Advanced_Tutorial/MicroduinoHospitalCall MicroduinoHospitalCall]]

==Debugging==


Step 1: Build the circuit according to schematic, as follows: 
[[File:HospitalCall1.png|600px|center|thumb]]


Step 2: Download code and compile. 
[[File:HospitalCall2.png|600px|center|thumb]]


Step 3: Supply power to any of the three stacked Microduino modules and the whole stacked system will be powered.  

Meantime, press button marked with sender 2 in the schematic and the readings will be displayed on receiver OLED: 


[[File:HospitalCall3.png|600px|center|thumb]]

If readings showed on OLED were defined in the code, it means the calling of No. 25 patient is successful. 


Then press the button of sender 1, the calling of No. 24 patient is successful.

The 16 hexadecimal of the picture showed on OLED is produced through PCtolCD. The detailed method can refer to: [[Lesson 2--Microduino OLED Usage]] 

Step 4: By adding voice prompt function, medical workers can get voice notice when someone calls. 

Stack Microduino-Amplifier and Microduino-SD on the basis of the three modules, as follows:
[[File:HospitalCall3Sound.png|600px|center|thumb]]
Re-download MicroduinoHospitalCallReciverSound.ino program to Core+.   
Save audio files you want to play into SD card of Microduino-SD. As for how to make audio files, please refer to: [[Microduino LM4863 Music player -301KIT]] 


Step 5: since the three devices (Sender1, Sender 2 and Receiver) are far to each other, so we can consider to power on them with [[Microduino-BM]]. 

==Result==

Here we make a simple wireless ward calling system. 

==Video==

http://v.youku.com/v_show/id_XODUxNzM3OTYw.html

|}