Introduction: Blink LED Using Your Brainwaves
What is Brainsense Headband ?
Brainsense is, a sleek, single-channel, wireless headset that monitors your brain activity and translates EEG into meaningful data you can understand .The biosensor platform provides a powerful foundation for the development of a variety of applications that promote Mind health such as improved focus, concentration, working memory and acuity. Other uses include meditation and relaxation monitoring or improved educational processes. Our low cost, complete OEM solution is a high-performance bio-signal on a single chip solution for accurate Mind activity detection and processing. Brainsenseuses neurosky TGAM1 Module.
Materials Required
Hardware’s:
2. Arduino Board
3. HC-05 Bluetooth Module
4. USB cable (for Arduino)
5. Connecting Wires.
Software’s:
1. Flash magic ,X-CTU (any serial communication software)
2. Arduino 1.0.5-r2
Step 1: Configration of Bluetooth Module
Bluetooth Module (HC-05)
It’s a high performance Bluetooth module HC-05. This is a standalone BTM-05 Bluetooth module. Its works as TTL Master/Slave Transceiver module with serial UART protocol for communication. Designed by Full speed Bluetooth operation with full piconet support. It allows you to achieve the industry’s highest levels of sensitivity, accuracy, with lowest power consumption.
Configuration of HC-05:
·Its configure as master mode
·Brainsense Headband act as slave device
Step 2: Add Device in Control Panel
1. Select your Brainsense Headband in the control panel in the add device wizard
Step 3: Find the Unique Identiifer Number
Find the unique Identiifer number as shown in the figure
Example:
The brainsense Unique no in the figure is 98d3,31,302424
Step 4: Configure HC-05 Bluetooth Module With Brainsense
Note: Here the Arduino Board is used only for USB to UART converter. So no need to sketch the board.
Step 5: Steps to Configure HC-05 in Command Mode
Pressand Hold the Push switch in HC-05 module at few secs, when its power ON (In between OFF state to ON state).
If HC-05 Module in Command mode , the LED blink at less rates (blinking slowly).
Baud rate for Command Mode
In command mode the HC-05 module works at fixed baud rate (38400 Baud).
In default state, the HC-05 module works as a Data mode operation.
If HC-05 Module in Data mode means, the LED blink at fast rates(Blinking fast)
Baud rate for Data Mode
In Data mode the HC-05 module works in variable Baud rate.
AT Commands for HC-05 to pair with Brainsense
First configure HC-05 into command mode, then enter the following AT commands for HC-05 module to communicate our BrainsenseHeadband.
1. AT+NAME=”PANTECH”
2. AT+UART=”57600,0,0”
3. AT+ROLE=”1”
4. AT+PSWD=”0000”
5. AT+CMODE=”0”
6. AT+BIND=”XXXX,YY,ZZZZZZ”(Brainsense Unique Number)
7. AT+IAC=”9E8B33”
8. AT+CLASS=”0”
9. AT+INQM=”1,9,48”
Step 6: Verification Commands for HC-05 Module
Verification commands for HC-05 Module
1. AT
OK
2. AT+UART?
+UART:57600,0,0
OK
3. AT+ROLE?
+ROLE:1
OK
4. AT+PSWD?
+PSWD:0000
OK
5. AT+CMODE?
+CMODE:0
OK
6. AT+BIND?
+BIND:9cb7:0d:89e51c
OK
7. AT+IAC?
+IAC:9E8B33
OK
8. AT+INQM?
+INQM:1,9,48
OK
Step 7: Interfacing Arduino With Brainsense Headband
Steps to follow
1. Program (Upload the sketch) the “Brainsensewith Arduino” source code to Arduino Board using Arduino compiler.
2. Open the “Serial Monitor” in Arduino compiler with 57600 baud rate.
3. Make all the connection as per the above image, and then switch ON the Arduino Board.
4. After the few Seconds, switch ON the BrainsenseHeadband.
5. Now the BrainsenseHeadband and Arduino Board will pair automatically.
6. Wear the BrainsenseHeadband in your Head, and give the attention.
7. Check the LED variation with respect your attention level.
8. And also see the Serial Monitor to know your Poor quality and attention levels.
Step 8: Upload the Sketch to Arduino Board
Download the sketch here
Program for Interfacing Arduino with BrainsenseHeadband
***************************************************************************************
Title: Brainsense with Arduino
***************************************************************************************
///////////////////////////////////////////////////////////////////////
/ Arduino Bluetooth Interface with Brainsense
//
// This is example code provided by Pantech Prolabs. and is provided
// license free.
////////////////////////////////////////////////////////////////////////
#define LED 13
#define BAUDRATE 57600
#define DEBUGOUTPUT 0
#define GREENLED1 3
#define GREENLED2 4
#define GREENLED3 5
#define YELLOWLED1 6
#define YELLOWLED2 7
#define YELLOWLED3 8
#define YELLOWLED4 9
#define REDLED1 10
#define REDLED2 11
#define REDLED3 12
#define powercontrol 10
// checksum variables
byte generatedChecksum = 0;
byte checksum = 0;
int payloadLength = 0;
byte payloadData[64] = {0};
byte poorQuality = 0;
byte attention = 0;
byte meditation = 0;
// system variables
long lastReceivedPacket = 0;
boolean bigPacket = false;
/////////////////////////
/ Microprocessor Setup /
/////////////////////////
void setup()
{
pinMode(GREENLED1, OUTPUT);
pinMode(GREENLED2, OUTPUT);
pinMode(GREENLED3, OUTPUT);
pinMode(YELLOWLED1, OUTPUT);
pinMode(YELLOWLED2, OUTPUT);
pinMode(YELLOWLED3, OUTPUT);
pinMode(YELLOWLED4, OUTPUT);
pinMode(REDLED1, OUTPUT);
pinMode(REDLED2, OUTPUT);
pinMode(REDLED3, OUTPUT);
pinMode(LED, OUTPUT);
Serial.begin(BAUDRATE); // USB
}
///////////////////////////////
/ Read data from Serial UART /
///////////////////////////////
byte ReadOneByte()
{
int ByteRead;
while(!Serial.available());
ByteRead = Serial.read();
#if DEBUGOUTPUT
Serial.print((char)ByteRead); // echo the same byte out the USB serial (for debug purposes)
#endif
return ByteRead;
}
////////////
/MAIN LOOP/
////////////
void loop()
{
// Look for sync bytes
if(ReadOneByte() == 170)
{
if(ReadOneByte() == 170)
{
payloadLength = ReadOneByte();
if(payloadLength > 169) //Payload length can not be greater than 169
return;
generatedChecksum = 0;
for(int i = 0; i < payloadLength; i++)
{
payloadData[i] = ReadOneByte(); //Read payload into memory
generatedChecksum += payloadData[i];
}
checksum = ReadOneByte(); //Read checksum byte from stream
generatedChecksum = 255 - generatedChecksum; //Take one's compliment of generated checksum
if(checksum == generatedChecksum)
{
poorQuality = 200;
attention = 0;
meditation = 0;
for(int i = 0; i < payloadLength; i++)
{ // Parse the payload
switch (payloadData[i])
{
case 2:
i++;
poorQuality = payloadData[i];
bigPacket = true;
break;
case 4:
i++;
attention = payloadData[i];
break;
case 5:
i++;
meditation = payloadData[i];
break;
case 0x80:
i = i + 3;
break;
case 0x83:
i = i + 25;
break;
default:
break;
} // switch
} // for loop
#if !DEBUGOUTPUT
// *** Add your code here ***
if(bigPacket)
{
if(poorQuality == 0)
digitalWrite(LED, HIGH);
else
digitalWrite(LED, LOW);
Serial.print("PoorQuality: ");
Serial.print(poorQuality, DEC);
Serial.print(" Attention: ");
Serial.print(attention, DEC);
Serial.print(" Time since last packet: ");
Serial.print(millis() - lastReceivedPacket, DEC);
lastReceivedPacket = millis();
Serial.print("\n");
switch(attention / 10)
{
case 0:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, LOW);
digitalWrite(GREENLED3, LOW);
digitalWrite(YELLOWLED1, LOW);
digitalWrite(YELLOWLED2, LOW);
digitalWrite(YELLOWLED3, LOW);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 1:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, LOW);
digitalWrite(YELLOWLED1, LOW);
digitalWrite(YELLOWLED2, LOW);
digitalWrite(YELLOWLED3, LOW);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 2:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, LOW);
digitalWrite(YELLOWLED2, LOW);
digitalWrite(YELLOWLED3, LOW);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 3:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, LOW);
digitalWrite(YELLOWLED3, LOW);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 4:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, LOW);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 5:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 6:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, HIGH);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 7:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, HIGH);
digitalWrite(REDLED1, HIGH);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 8:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, HIGH);
digitalWrite(REDLED1, HIGH);
digitalWrite(REDLED2, HIGH);
digitalWrite(REDLED3, LOW);
break;
case 9:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, HIGH);
digitalWrite(REDLED1, HIGH);
digitalWrite(REDLED2, HIGH);
digitalWrite(REDLED3, HIGH);
break;
case 10:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, HIGH);
digitalWrite(REDLED1, HIGH);
digitalWrite(REDLED2, HIGH);
digitalWrite(REDLED3, HIGH);
break;
}
}
#endif
bigPacket = false;
}
else {
// Checksum Error
} // end if else for checksum
} // end if read 0xAA byte
} // end if read 0xAA byte
}
Attachments
Step 9: LED Bliking on Arduino
Step 10: Output on Serial Monitor
You could use the same code to interface Neurosky Mindwave mobile with arduino
