WIZnet
BTSmartFan Servo/DC motor controlled using Bluetooth
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BTSmartFan_WIZwiki-W7500
by 
justin kim
Prerequisite
This example is to control a servo motor and DC motor using bluetooth.
To implement this function, you need a Platform board, Easy Module Shield V1, Bluetooth module, DC jack, 5V DC Power Supply.
Below are what we used.
- WIZwiki-W7500 from WIZnet (Platform board)
- Arduino Motor Shield
- Easy Module Shield(Not mandatory)
- HC-05 bluetooth module
- Servo motor(DM-S0300D)
- DC motor(5V)
- DC jack
- 5V DC Power Supply
Hardware Configuration
WIZwiki-W7500 Pin map
Arduino Motor Shield + DC motor(5V) + DC jack + 5V DC Power Supply
Easy Module Shield(Not mandatory) + HC-05 bluetooth module + Servo motor(DM-S0300D)
Software
BlueTerm (Application)
download a BlueTerm App to send a command message to bluetooth module with smart phone.
Pins setting
main.cpp
Serial pc(USBTX, USBRX); Serial bt(PA_14, PA_13); Servo myservo(D14); PwmOut Motor(D3); DigitalOut direction(D12);
Baud rate
main.cpp
pc.baud(115200);
//bt.baud(115200);
bt.baud(9600);
Diff: main.cpp
- Revision:
- 0:7441087c2a16
- Child:
- 1:1ad093d2a110
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Jun 29 01:27:03 2015 +0000
@@ -0,0 +1,101 @@
+/**
+ ******************************************************************************
+ * @project Smart BT Fan
+ * @author Justin Kim
+ * @version V1.0.0
+ * @date 29-JUN-2015
+ * @brief Main program body
+*******************************************************************************
+**/
+
+/* Includes ------------------------------------------------------------------*/
+#include "mbed.h"
+#include "Servo.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+Serial pc(USBTX, USBRX);
+Serial bt(PA_14, PA_13);
+Servo myservo(D14);
+PwmOut Motor(D3);
+DigitalOut direction(D12);
+
+/* Private function prototypes -----------------------------------------------*/
+
+/* Private functions ---------------------------------------------------------*/
+/**
+ * @brief Main Function
+ * @param None
+ * @retval None
+ */
+int main(void)
+{
+ char ch;
+ pc.baud(115200);
+ bt.baud(115200);
+ pc.printf("Hello World!\n\r");
+ bt.printf("Hello World!\r\n");
+
+ direction.write(1);
+ Motor.period_ms(1);
+
+ while(1)
+ {
+ if(bt.readable())
+ {
+ ch=bt.getc();
+ pc.printf("%c",ch);
+ bt.printf("%c",ch);
+
+ if(ch == '*')
+ {
+ myservo = 0.5;
+ }
+ else if(ch == '+')
+ {
+ myservo = myservo + 0.1;
+ }
+ else if(ch == '-')
+ {
+ myservo = myservo - 0.1;
+ }
+ else if(ch == '@')
+ {
+ Motor.write(0.8);
+ }
+ else if(ch == '!')
+ {
+ Motor.write(0);
+ }
+ }
+
+ else if(pc.readable())
+ {
+ ch=pc.getc();
+ bt.printf("%c",ch);
+ pc.printf("%c",ch);
+
+ if(ch == '*')
+ {
+ myservo = 0.5;
+ }
+ else if(ch == '+')
+ {
+ myservo = myservo + 0.1;
+ }
+ else if(ch == '-')
+ {
+ myservo = myservo - 0.1;
+ }
+ else if(ch == '@')
+ {
+ Motor.write(0.8);
+ }
+ else if(ch == '!')
+ {
+ Motor.write(0);
+ }
+ }
+ }
+}