├── .gitignore ├── Brain.cpp ├── Brain.h ├── COPYING ├── COPYING.LESSER ├── README.md ├── examples ├── BrainBlinker │ └── BrainBlinker.ino ├── BrainSerialTest │ └── BrainSerialTest.ino └── BrainSoftSerialTest │ └── BrainSoftSerialTest.ino └── keywords.txt /.gitignore: -------------------------------------------------------------------------------- 1 | .DS_Store 2 | -------------------------------------------------------------------------------- /Brain.cpp: -------------------------------------------------------------------------------- 1 | #include "Arduino.h" 2 | #include "Brain.h" 3 | 4 | Brain::Brain(Stream &_brainStream) { 5 | brainStream = &_brainStream; 6 | 7 | // Keep the rest of the initialization process in a separate method in case 8 | // we overload the constructor. 9 | init(); 10 | } 11 | 12 | void Brain::init() { 13 | // It's up to the calling code to start the stream 14 | // Usually Serial.begin(9600); 15 | freshPacket = false; 16 | inPacket = false; 17 | packetIndex = 0; 18 | packetLength = 0; 19 | eegPowerLength = 0; 20 | hasPower = false; 21 | checksum = 0; 22 | checksumAccumulator = 0; 23 | 24 | signalQuality = 200; 25 | attention = 0; 26 | meditation = 0; 27 | 28 | clearEegPower(); 29 | } 30 | 31 | boolean Brain::update() { 32 | if (brainStream->available()) { 33 | latestByte = brainStream->read(); 34 | 35 | // Build a packet if we know we're and not just listening for sync bytes. 36 | if (inPacket) { 37 | 38 | // First byte after the sync bytes is the length of the upcoming packet. 39 | if (packetIndex == 0) { 40 | packetLength = latestByte; 41 | 42 | // Catch error if packet is too long 43 | if (packetLength > MAX_PACKET_LENGTH) { 44 | // Packet exceeded max length 45 | // Send an error 46 | sprintf(latestError, "ERROR: Packet too long %i", packetLength); 47 | inPacket = false; 48 | } 49 | } 50 | else if (packetIndex <= packetLength) { 51 | // Run of the mill data bytes. 52 | 53 | // Print them here 54 | 55 | // Store the byte in an array for parsing later. 56 | packetData[packetIndex - 1] = latestByte; 57 | 58 | // Keep building the checksum. 59 | checksumAccumulator += latestByte; 60 | } 61 | else if (packetIndex > packetLength) { 62 | // We're at the end of the data payload. 63 | 64 | // Check the checksum. 65 | checksum = latestByte; 66 | checksumAccumulator = 255 - checksumAccumulator; 67 | 68 | // Do they match? 69 | if (checksum == checksumAccumulator) { 70 | boolean parseSuccess = parsePacket(); 71 | 72 | if (parseSuccess) { 73 | freshPacket = true; 74 | } 75 | else { 76 | // Parsing failed, send an error. 77 | sprintf(latestError, "ERROR: Could not parse"); 78 | // good place to print the packet if debugging 79 | } 80 | } 81 | else { 82 | // Checksum mismatch, send an error. 83 | sprintf(latestError, "ERROR: Checksum"); 84 | // good place to print the packet if debugging 85 | } 86 | // End of packet 87 | 88 | // Reset, prep for next packet 89 | inPacket = false; 90 | } 91 | 92 | packetIndex++; 93 | } 94 | 95 | // Look for the start of the packet 96 | if ((latestByte == 170) && (lastByte == 170) && !inPacket) { 97 | // Start of packet 98 | inPacket = true; 99 | packetIndex = 0; 100 | checksumAccumulator = 0; 101 | } 102 | 103 | // Keep track of the last byte so we can find the sync byte pairs. 104 | lastByte = latestByte; 105 | } 106 | 107 | if (freshPacket) { 108 | freshPacket = false; 109 | return true; 110 | } 111 | else { 112 | return false; 113 | } 114 | 115 | } 116 | 117 | void Brain::clearPacket() { 118 | for (uint8_t i = 0; i < MAX_PACKET_LENGTH; i++) { 119 | packetData[i] = 0; 120 | } 121 | } 122 | 123 | void Brain::clearEegPower() { 124 | // Zero the power bands. 125 | for(uint8_t i = 0; i < EEG_POWER_BANDS; i++) { 126 | eegPower[i] = 0; 127 | } 128 | } 129 | 130 | boolean Brain::parsePacket() { 131 | // Loop through the packet, extracting data. 132 | // Based on mindset_communications_protocol.pdf from the Neurosky Mindset SDK. 133 | // Returns true if passing succeeds 134 | hasPower = false; 135 | boolean parseSuccess = true; 136 | // int rawValue = 0; 137 | 138 | clearEegPower(); // clear the eeg power to make sure we're honest about missing values 139 | 140 | for (uint8_t i = 0; i < packetLength; i++) { 141 | switch (packetData[i]) { 142 | case 0x2: 143 | signalQuality = packetData[++i]; 144 | break; 145 | case 0x4: 146 | attention = packetData[++i]; 147 | break; 148 | case 0x5: 149 | meditation = packetData[++i]; 150 | break; 151 | case 0x83: 152 | // ASIC_EEG_POWER: eight big-endian 3-uint8_t unsigned integer values representing delta, theta, low-alpha high-alpha, low-beta, high-beta, low-gamma, and mid-gamma EEG band power values 153 | // The next uint8_t sets the length, usually 24 (Eight 24-bit numbers... big endian?) 154 | // We dont' use this value so let's skip it and just increment i 155 | i++; 156 | 157 | // Extract the values 158 | for (int j = 0; j < EEG_POWER_BANDS; j++) { 159 | uint8_t a,b,c; 160 | a = packetData[++i]; 161 | b = packetData[++i]; 162 | c = packetData[++i]; 163 | eegPower[j] = ((uint32_t)a << 16) | ((uint32_t)b << 8) | (uint32_t)c; 164 | } 165 | 166 | hasPower = true; 167 | // This seems to happen once during start-up on the force trainer. Strange. Wise to wait a couple of packets before 168 | // you start reading. 169 | break; 170 | case 0x80: 171 | // We dont' use this value so let's skip it and just increment i 172 | // uint8_t packetLength = packetData[++i]; 173 | // rawValue = ((int)packetData[++i] << 8) | packetData[++i]; 174 | i += 3; 175 | break; 176 | default: 177 | // Broken packet ? 178 | /* 179 | Serial.print(F("parsePacket UNMATCHED data 0x")); 180 | Serial.print(packetData[i], HEX); 181 | Serial.print(F(" in position ")); 182 | Serial.print(i, DEC); 183 | printPacket(); 184 | */ 185 | parseSuccess = false; 186 | break; 187 | } 188 | } 189 | return parseSuccess; 190 | } 191 | 192 | // Keeping this around for debug use 193 | void Brain::printCSV() { 194 | // Print the CSV over serial 195 | brainStream->print(signalQuality, DEC); 196 | brainStream->print(","); 197 | brainStream->print(attention, DEC); 198 | brainStream->print(","); 199 | brainStream->print(meditation, DEC); 200 | 201 | if (hasPower) { 202 | for(int i = 0; i < EEG_POWER_BANDS; i++) { 203 | brainStream->print(","); 204 | brainStream->print(eegPower[i], DEC); 205 | } 206 | } 207 | 208 | brainStream->println(""); 209 | } 210 | 211 | char* Brain::readErrors() { 212 | return latestError; 213 | } 214 | 215 | char* Brain::readCSV() { 216 | // spit out a big string? 217 | // find out how big this really needs to be 218 | // should be popped off the stack once it goes out of scope? 219 | // make the character array as small as possible 220 | 221 | if(hasPower) { 222 | 223 | sprintf(csvBuffer,"%d,%d,%d,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu", 224 | signalQuality, 225 | attention, 226 | meditation, 227 | eegPower[0], 228 | eegPower[1], 229 | eegPower[2], 230 | eegPower[3], 231 | eegPower[4], 232 | eegPower[5], 233 | eegPower[6], 234 | eegPower[7] 235 | ); 236 | 237 | return csvBuffer; 238 | } 239 | else { 240 | sprintf(csvBuffer,"%d,%d,%d", 241 | signalQuality, 242 | attention, 243 | meditation 244 | ); 245 | 246 | return csvBuffer; 247 | } 248 | } 249 | 250 | // For debugging, print the entire contents of the packet data array. 251 | void Brain::printPacket() { 252 | brainStream->print("["); 253 | for (uint8_t i = 0; i < MAX_PACKET_LENGTH; i++) { 254 | brainStream->print(packetData[i], DEC); 255 | 256 | if (i < MAX_PACKET_LENGTH - 1) { 257 | brainStream->print(", "); 258 | } 259 | } 260 | brainStream->println("]"); 261 | } 262 | 263 | void Brain::printDebug() { 264 | brainStream->println(""); 265 | brainStream->println("--- Start Packet ---"); 266 | brainStream->print("Signal Quality: "); 267 | brainStream->println(signalQuality, DEC); 268 | brainStream->print("Attention: "); 269 | brainStream->println(attention, DEC); 270 | brainStream->print("Meditation: "); 271 | brainStream->println(meditation, DEC); 272 | 273 | if (hasPower) { 274 | brainStream->println(""); 275 | brainStream->println("EEG POWER:"); 276 | brainStream->print("Delta: "); 277 | brainStream->println(eegPower[0], DEC); 278 | brainStream->print("Theta: "); 279 | brainStream->println(eegPower[1], DEC); 280 | brainStream->print("Low Alpha: "); 281 | brainStream->println(eegPower[2], DEC); 282 | brainStream->print("High Alpha: "); 283 | brainStream->println(eegPower[3], DEC); 284 | brainStream->print("Low Beta: "); 285 | brainStream->println(eegPower[4], DEC); 286 | brainStream->print("High Beta: "); 287 | brainStream->println(eegPower[5], DEC); 288 | brainStream->print("Low Gamma: "); 289 | brainStream->println(eegPower[6], DEC); 290 | brainStream->print("Mid Gamma: "); 291 | brainStream->println(eegPower[7], DEC); 292 | } 293 | 294 | brainStream->println(""); 295 | brainStream->print("Checksum Calculated: "); 296 | brainStream->println(checksumAccumulator, DEC); 297 | brainStream->print("Checksum Expected: "); 298 | brainStream->println(checksum, DEC); 299 | 300 | brainStream->println("--- End Packet ---"); 301 | brainStream->println(""); 302 | } 303 | 304 | uint8_t Brain::readSignalQuality() { 305 | return signalQuality; 306 | } 307 | 308 | uint8_t Brain::readAttention() { 309 | return attention; 310 | } 311 | 312 | uint8_t Brain::readMeditation() { 313 | return meditation; 314 | } 315 | 316 | uint32_t* Brain::readPowerArray() { 317 | return eegPower; 318 | } 319 | 320 | uint32_t Brain::readDelta() { 321 | return eegPower[0]; 322 | } 323 | 324 | uint32_t Brain::readTheta() { 325 | return eegPower[1]; 326 | } 327 | 328 | uint32_t Brain::readLowAlpha() { 329 | return eegPower[2]; 330 | } 331 | 332 | uint32_t Brain::readHighAlpha() { 333 | return eegPower[3]; 334 | } 335 | 336 | uint32_t Brain::readLowBeta() { 337 | return eegPower[4]; 338 | } 339 | 340 | uint32_t Brain::readHighBeta() { 341 | return eegPower[5]; 342 | } 343 | 344 | uint32_t Brain::readLowGamma() { 345 | return eegPower[6]; 346 | } 347 | 348 | uint32_t Brain::readMidGamma() { 349 | return eegPower[7]; 350 | } 351 | -------------------------------------------------------------------------------- /Brain.h: -------------------------------------------------------------------------------- 1 | #ifndef Brain_h 2 | #define Brain_h 3 | 4 | #include "Arduino.h" 5 | 6 | #define MAX_PACKET_LENGTH 32 7 | #define EEG_POWER_BANDS 8 8 | 9 | class Brain { 10 | public: 11 | Brain(Stream &_brainStream); 12 | 13 | // Run this in the main loop. 14 | boolean update(); 15 | 16 | // String with most recent error. 17 | char* readErrors(); 18 | 19 | // Returns comme-delimited string of all available brain data. 20 | // Sequence is as below. 21 | char* readCSV(); 22 | 23 | // Individual pieces of brain data. 24 | uint8_t readSignalQuality(); 25 | uint8_t readAttention(); 26 | uint8_t readMeditation(); 27 | uint32_t* readPowerArray(); 28 | uint32_t readDelta(); 29 | uint32_t readTheta(); 30 | uint32_t readLowAlpha(); 31 | uint32_t readHighAlpha(); 32 | uint32_t readLowBeta(); 33 | uint32_t readHighBeta(); 34 | uint32_t readLowGamma(); 35 | uint32_t readMidGamma(); 36 | 37 | private: 38 | Stream* brainStream; 39 | uint8_t packetData[MAX_PACKET_LENGTH]; 40 | boolean inPacket; 41 | uint8_t latestByte; 42 | uint8_t lastByte; 43 | uint8_t packetIndex; 44 | uint8_t packetLength; 45 | uint8_t checksum; 46 | uint8_t checksumAccumulator; 47 | uint8_t eegPowerLength; 48 | boolean hasPower; 49 | void clearPacket(); 50 | void clearEegPower(); 51 | boolean parsePacket(); 52 | 53 | void printPacket(); 54 | void init(); 55 | void printCSV(); // maybe should be public? 56 | void printDebug(); 57 | 58 | // With current hardware, at most we would have... 59 | // 3 x 3 char uint8_t 60 | // 8 x 10 char uint32_t 61 | // 10 x 1 char commas 62 | // 1 x 1 char 0 (string termination) 63 | // ------------------------- 64 | // 100 characters 65 | char csvBuffer[100]; 66 | 67 | // Longest error is 68 | // 22 x 1 char uint8_ts 69 | // 1 x 1 char 0 (string termination) 70 | char latestError[23]; 71 | 72 | uint8_t signalQuality; 73 | uint8_t attention; 74 | uint8_t meditation; 75 | 76 | boolean freshPacket; 77 | 78 | // Lighter to just make this public, instead of using the getter? 79 | uint32_t eegPower[EEG_POWER_BANDS]; 80 | }; 81 | 82 | #endif 83 | -------------------------------------------------------------------------------- /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Tested units include the Star Wars Force Trainer and Mattel MindFlex. 6 | 7 | It's designed to make it simple to send out an ASCII string of comma-separated values over serial, or to access processed brain wave information directly in your Arduino sketch. See the examples for code demonstrating each use case. 8 | 9 | Instructions for the hardware-end of this hack are available here: 10 | 11 | [https://frontiernerds.com/brain-hack](https://frontiernerds.com/brain-hack) 12 | 13 | This library pairs nicely with the Processing-based [BrainGrapher](https://github.com/kitschpatrol/BrainGrapher). 14 | 15 | The `getCSV()` function returns a string (`char*`) listing the most recent brain data, in the following format: 16 | 17 | ``` 18 | signal strength, attention, meditation, delta, theta, low alpha, high alpha, low beta, high beta, low gamma, high gamma 19 | ``` 20 | 21 | Signal strength ranges from 0 – 200. Counterintuitively, 0 means the unit has connected successfully, and 200 means there is no signal. 22 | 23 | The attention and meditation values both run from 0 – 100. Intuitively, higher numbers represent more attention or meditation. 24 | 25 | The EEG power values — delta, theta, etc... — are a heavily filtered representation of the relative activity in different brain wavelengths. These values can not be mapped directly to physical values (e.g. volts), but are still of use when considered over time or relative to each other. 26 | 27 | ## Compatibility 28 | 29 | This library expects a certain serial protocol from attached devices. Hardware that uses a different protocol won't work and you will see serial or parsing related errors. 30 | 31 | | Device | Compatibility | 32 | | -------------------------- | ------------- | 33 | | Star Wars Force Trainer | ✅ Yes | 34 | | Mattel Mindflex | ✅ Yes | 35 | | Star Wars Force Trainer II | ❌ No | 36 | | Neurosky MindWave Mobile 2 | ❌ No | 37 | 38 | If you've tested with additional headsets, please feel free to open an issue to report your findings. 39 | 40 | Support for additional devices is definitely feasible, and pull requests are welcome, but I currently don't have the time or hardware access to implement this on my own. 41 | 42 | ## Repository rename 43 | 44 | This project was formerly `Arduino-Brain-Library` on GitHub, but was renamed to just `Brain` in 2014 to play nicely with the Arduino IDE's new "Sketch → Import Library..." menu item. 45 | 46 | ## Software serial 47 | 48 | Past versions of this library relied on a separate branch implementing support for NewSoftSerial. Improvements to both the bundled SoftwareSerial library and the underlying class hierarchy in Arduino 1.0 has allowed a single version of the Brain library to cover both use cases. Please **do not use** the old [softserial](https://github.com/kitschpatrol/Brain/tree/softserial) branch of this library! 49 | 50 | ## Examples 51 | 52 | Three examples are provided with the library: 53 | 54 | - `BrainBlinker.ino` 55 | Blinks an LED faster as your "attention" value increases. 56 | 57 | - `BrainSerialTest.ino` 58 | Prints out a CSV of brain data over serial. 59 | 60 | - `BrainSoftSerialTest.ino` 61 | Reads brain data over SoftwareSerial and prints a CSV over hardware serial. 62 | 63 | ## Installation 64 | 65 | There are two ways to install the library: 66 | 67 | ### Installation through the Arduino IDE 68 | 69 | Download the [latest release](https://github.com/kitschpatrol/Brain/releases), and then in the Arduino IDE go to "Sketch → Import Library..." and point the file dialogue to the Brain.zip file you just downloaded. 70 | 71 | ### Manual Installation 72 | 73 | Download the [latest release](https://github.com/kitschpatrol/Brain/releases), decompress, rename it to Brain, and drag "Brain" folder to Arduino's "libraries" folder inside your sketch folder. (On the Mac, this is ~/Documents/Arduino/libraries by default. You may need to create this folder if it does not exist.) Restart the Arduino environment. 74 | 75 | ## Function Overview 76 | 77 | - `Brain(HardwareSerial &_brainSerial)` 78 | Instantiates the brain library on a hardware serial port. 79 | 80 | - `boolean update();` 81 | Call this in your main loop to read data from the headset. Returns true if there is a fresh packet. 82 | 83 | - `char* readErrors();` 84 | Character string containing the most recent errors. Worth printing this out over serial if you're having trouble. 85 | 86 | - `char* readCSV();` 87 | Character string with all of the latest brain values in a comma-delimited format. Intended to be printed over serial. The data is returned in this order: `signal strength, attention, meditation, delta, theta, low alpha, high alpha, low beta, high beta, low gamma, high gamma` 88 | 89 | - `byte readSignalQuality();` 90 | Returns the latest signal quality reading. 200 indicates no signal, 0 indicates a good signal. This (and the remainder of the functions) are mainly intended for use when you want the Arduino to use the brain data internally. (Saves you the hassle / memory expenditure of parsing the CSV.) 91 | 92 | - `byte readAttention();` 93 | Returns the NeuroSky "eSense" attention value. 94 | 95 | - `byte readMeditation();` 96 | Returns the NeuroSky "eSense" meditation value. 97 | 98 | - `unsigned long* readPowerArray();` 99 | Returns an array of the eight power-band (FFT) values, in the same order as the CSV. 100 | 101 | - `unsigned long readDelta();` 102 | Returns the delta (1–3Hz) power value, often associated with sleep. 103 | 104 | - `unsigned long readTheta();` 105 | Returns the theta (4–7Hz) power value, associated with a relaxed, meditative state. 106 | 107 | - `unsigned long readLowAlpha();` 108 | Returns the low alpha (8–9Hz) power value, higher when eyes are closed or you're relaxed/ 109 | 110 | - `unsigned long readHighAlpha();` 111 | Returns the high alpha (10–12Hz) power value. 112 | 113 | - `unsigned long readLowBeta();` 114 | Returns the low beta (13–17Hz) power value, higher when you're alert and focused. 115 | 116 | - `unsigned long readHighBeta();` 117 | Returns the high beta (18–30Hz) power value. 118 | 119 | - `unsigned long readLowGamma();` 120 | Returns the low gamma (31–40Hz) power value, associated with multi-sensory processing. 121 | 122 | - `unsigned long readMidGamma();` 123 | Returns the high gamma (41–50Hz) power value. 124 | 125 | ## Minutiae 126 | 127 | Note that the connection to the Neurosky headset is half-duplex — it will use up the RX pin on your Arduino, but you will still be able to send data back to a PC via USB. (Although in this case you won't be able to send data to the Arduino from the PC.) 128 | 129 | You may wish to read brain data over a software serial connection instead of the Arduino's hardware serial (this frees up the hardware serial for full-duplex operation). There's a different branch of this library designed for use with NewSoftSerial: [https://github.com/kitschpatrol/Arduino-Brain-Library/tree/softserial](https://github.com/kitschpatrol/Arduino-Brain-Library/tree/softserial) 130 | 131 | The MindFlex provides access to more brain data than the Force Trainer — in addition to the signal strength, attention and meditation values, the MindFlex gives access to 8 bands of EEG power data. 132 | 133 | Brain data comes in quite slowly. Expect a fresh packet every second or so. 134 | 135 | ## Contact 136 | 137 | Eric Mika 138 | eric@ericmika.com 139 | [https://github.com/kitschpatrol](https://github.com/kitschpatrol) 140 | [https://frontiernerds.com](https://frontiernerds.com) 141 | 142 | ## Colophon 143 | 144 | Created by Eric Mika at NYU ITP in the spring of 2010. 145 | Updated for Arduino 1.0 in 2013. 146 | Revised, retested, and cleaned up in early 2014. 147 | 148 | My thanks to Tom Igoe for his assistance during development. Thanks to my collaborators Sofy Yuditskaya and Arturo Vidich. (E>) 149 | 150 | Thanks also to [Eero af Heurlin](https://github.com/rambo) for making some considered changes in his fork. 151 | 152 | ## License 153 | 154 | Copyright Eric Mika, 2010–2023 155 | Licensed under the GNU Lesser General Public License. 156 | 157 | This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. 158 | 159 | This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 160 | 161 | You should have received a copy of the GNU Lesser General Public License along with this program. If not, see https://www.gnu.org/licenses/. 162 | -------------------------------------------------------------------------------- /examples/BrainBlinker/BrainBlinker.ino: -------------------------------------------------------------------------------- 1 | // Arduino Brain Library - Brain Blinker 2 | 3 | // Description: Basic brain example, blinks an LED on pin 13 faster as your "attention" value increases. 4 | // Adapted from the Blink without Delay example distributed with Arduino environment. 5 | // More info: https://github.com/kitschpatrol/Arduino-Brain-Library 6 | // Author: Eric Mika, 2010 revised in 2014 7 | 8 | #include 9 | 10 | // Set up the brain reader, pass it the hardware serial object you want to listen on. 11 | Brain brain(Serial); 12 | 13 | const int ledPin = 13; // 13 is handy because it's on the board. 14 | long interval = 500; // Changes based on attention value. 15 | long previousMillis = 0; 16 | int ledState = LOW; 17 | 18 | void setup() { 19 | // Set up the LED pin. 20 | pinMode(ledPin, OUTPUT); 21 | 22 | // Start the hardware serial. 23 | Serial.begin(9600); 24 | } 25 | 26 | void loop() { 27 | // Expect packets about once per second. 28 | if (brain.update()) { 29 | Serial.println(brain.readCSV()); 30 | 31 | // Attention runs from 0 to 100. 32 | interval = (100 - brain.readAttention()) * 10; 33 | } 34 | 35 | // Make sure we have a signal. 36 | if(brain.readSignalQuality() == 0) { 37 | 38 | // Blink the LED. 39 | if (millis() - previousMillis > interval) { 40 | // Save the last time you blinked the LED. 41 | previousMillis = millis(); 42 | 43 | // If the LED is off turn it on and vice-versa: 44 | if (ledState == LOW) 45 | ledState = HIGH; 46 | else 47 | ledState = LOW; 48 | 49 | // Set the LED with the ledState of the variable: 50 | digitalWrite(ledPin, ledState); 51 | } 52 | } 53 | else { 54 | digitalWrite(ledPin, LOW); 55 | } 56 | 57 | } 58 | -------------------------------------------------------------------------------- /examples/BrainSerialTest/BrainSerialTest.ino: -------------------------------------------------------------------------------- 1 | // Arduino Brain Library - Brain Serial Test 2 | 3 | // Description: Grabs brain data from the serial RX pin and sends CSV out over the TX pin (Half duplex.) 4 | // More info: https://github.com/kitschpatrol/Arduino-Brain-Library 5 | // Author: Eric Mika, 2010 revised in 2014 6 | 7 | #include 8 | 9 | // Set up the brain parser, pass it the hardware serial object you want to listen on. 10 | Brain brain(Serial); 11 | 12 | void setup() { 13 | // Start the hardware serial. 14 | Serial.begin(9600); 15 | } 16 | 17 | void loop() { 18 | // Expect packets about once per second. 19 | // The .readCSV() function returns a string (well, char*) listing the most recent brain data, in the following format: 20 | // "signal strength, attention, meditation, delta, theta, low alpha, high alpha, low beta, high beta, low gamma, high gamma" 21 | if (brain.update()) { 22 | Serial.println(brain.readErrors()); 23 | Serial.println(brain.readCSV()); 24 | } 25 | } 26 | -------------------------------------------------------------------------------- /examples/BrainSoftSerialTest/BrainSoftSerialTest.ino: -------------------------------------------------------------------------------- 1 | // Arduino Brain Library - Brain SoftSerial Test 2 | 3 | // Description: Grabs brain data from software serial on pin 10 and sends CSV out over the hardware serial 4 | // More info: https://github.com/kitschpatrol/Arduino-Brain-Library 5 | // Author: Eric Mika, 2014 6 | 7 | #include 8 | #include 9 | 10 | // Set up the software serial port on pins 10 (RX) and 11 (TX). We'll only actually hook up pin 10. 11 | SoftwareSerial softSerial(10, 11); 12 | 13 | // Set up the brain reader, pass it the software serial object you want to listen on. 14 | Brain brain(softSerial); 15 | 16 | void setup() { 17 | // Start the software serial. 18 | softSerial.begin(9600); 19 | 20 | // Start the hardware serial. 21 | Serial.begin(9600); 22 | } 23 | 24 | void loop() { 25 | // Expect packets about once per second. 26 | // The .readCSV() function returns a string (well, char*) listing the most recent brain data, in the following format: 27 | // "signal strength, attention, meditation, delta, theta, low alpha, high alpha, low beta, high beta, low gamma, high gamma" 28 | if (brain.update()) { 29 | Serial.println(brain.readErrors()); 30 | Serial.println(brain.readCSV()); 31 | } 32 | } 33 | -------------------------------------------------------------------------------- /keywords.txt: -------------------------------------------------------------------------------- 1 | Brain KEYWORD1 2 | readErrors KEYWORD2 3 | readCSV KEYWORD2 4 | update KEYWORD2 5 | readSignalQuality KEYWORD2 6 | readAttention KEYWORD2 7 | readMediation KEYWORD2 8 | readPowerArray KEYWORD2 9 | readDelta KEYWORD2 10 | readTheta KEYWORD2 11 | readLowAlpha KEYWORD2 12 | readHighAlpha KEYWORD2 13 | readLowBeta KEYWORD2 14 | readHighBeta KEYWORD2 15 | readLowGamma KEYWORD2 16 | readMidGamma KEYWORD2 17 | clearPacket KEYWORD2 18 | clearEegPower KEYWORD2 19 | parsePacket KEYWORD2 20 | printPacket KEYWORD2 21 | init KEYWORD2 22 | printCSV KEYWORD2 23 | printDebug KEYWORD2 --------------------------------------------------------------------------------