SEN0203

    Heart Rate Sensor SKU: SEN0203 From Robot Wiki    Heart Rate Sensor SKU: SEN0203  Contents     1 Introduction  2 Specification  3 Board Overview  4 Tutorial   o 4.1 Requirements  o 4.2 Before start  o 4.3 Connection Diagram  o 4.4 Sample Code    4.4.1 Digital Mode  o 4.5 Draw the ECG (Electrocardiography)    4.5.1 Digital Mode   4.5.2 Analog Mode  o 4.6 Use it with LCD12864 shield  Introduction The DFRobot heart rate sensor is a thumb-sized heart rate monitor designed for Arduino microcontrollers. It includes a Gravity interface, for easy plug-and-play connectivity. This sensor is a pulse sensor which is developed based on PPG (PhotoPlethysmoGraphy) techniques. This is a simple and low-cost optical technique that can be used to detect blood volume changing in the microvascular bed of tissues. It is relatively easy to detect the pulsatile component of the cardiac cycle according to this theory. The sensor has two holes that you can use to attach to your belt. You can wrap on your finger, wrist, earlobe or other areas where it has contact with skin. The heart sensor has two kinds of signal output mode: analog pulse mode and digital square wave mode. You can change its output mode using the dial switch. There are many user scenarios, including education, sport or maker/interactive projects!   Please Note: This product is NOT a medical device and is not intended to be used as such or as an accessory to such nor diagnose or treat any conditions. Specification     Input Voltage (Vin): 3.3 ‐ 6V (5V recommended)  Output Voltage: 0 ‐ Vin (Analog), 0/ Vin (Digital)  Operating current: . 45 If not, see Serial Plotter menu) 5 Attach the center pin of a potentiometer to pin A 0, and the outside pins to +5V and ground. 6 7 This example code is in the public domain. 8 */ 9 10 // the setup routine runs once when you press reset : 11 void setup() { 12 // initialize serial communication at 9600 bits p er second: 13 Serial.begin(9600); 14 } 15 16 // the loop routine runs over and over again foreve r: 17 void loop() { 18 // read the input on analog pin 0: 19 int sensorValue = analogRead(A1); 20 // print out the value you read: 21 Serial.println(sensorValue); 22 delay(10); tability 23 }   // delay in between reads for s   Use it with LCD12864 shield 1. Please download and install the library for LCD12846.   2. Upload the code below  3. It will display the heart rate and ECG on the LCD(12846) screen.   o Sample video on Youku  1 /*! 2 * @file HeartrateDisplay 3 * @brief Waves of blood oxygen saturation and heart ra te value is displayed on the LCD 4 * 5 * @brief Waves of blood oxygen saturation and heart ra te value is displayed on the LCD 6 * 7 * @author linfeng(490289303@qq.com) 8 * @version 9 * @date 2016-8-16 10 * @version 11 * @date V1.1 V1.0 2015-12-24 12 */ 13 14 #define heartratePin A1 15 #include "Heartrate.h" 16 #include "Lcd12864Shield.h" 17 18 uint16_t heartrateValue=0,heartrateValueLast=0; 19 uint8_t count; 20 21 Lcd12864Shield lcddisplay(10,9,8,13,11); 22 Heartrate heartrate(DIGITAL_MODE); ///< ANALOG_MODE or DIGITAL_MODE 23 24 char wordDisplay[]= ///< word 25 { 26 0x00,0x00,0x01,0x03,0x07,0x0F,0x1F,0x3F, 27 0x1F,0x0F,0x07,0x03,0x01,0x00,0x00,0x00, 28 0x00,0x00,0xC0,0xE0,0xE0,0xE0,0xC0,0x80, 29 0xC0,0xE0,0xE0,0xE0,0xC0,0x00,0x00,0x00,///< ♥ 30 }; 31 char letterDisplay[]= ///< character 32 { 33 34 0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00, 35 0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,///< 0 36 0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00, 37 0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,///< 1 38 0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00, 39 0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,///< 2 40 0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00, 41 0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00,///< 3 42 0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00, 43 0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00,///< 4 44 0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00, 45 0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00,///< 5 46 0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00, 47 0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00,///< 6 48 0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00, 49 0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,///< 7 50 0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00, 51 0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,///< 8 52 0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00, 53 0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00,///< 9 54 0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00, 55 0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00,///< = 56 }; 57 58 59 60 void lcdBegin(void) 61 { 62 lcddisplay.initialLcd(); ///< Enable LCD 63 lcddisplay.clearScreen(); ///< Clear LCD 64 lcddisplay.drawXLine(48); ///< Draw a horizontal line 65 lcddisplay.drawYLine(7); ///< Draw a vertical line 66 lcddisplay.drawWord(7,10,0,wordDisplay); ///< Display s a word 67 lcddisplay.drawLetter(7,30,10,letterDisplay); ///< Di splays a character 68 } 69 70 void setup() { 71 Serial.begin(115200); 72 lcdBegin(); 73 } 74 75 void loop() { 76 unsigned char rateValue; 77 heartrateValueLast = heartrateValue; 78 heartrateValue = heartrate.getValue(heartratePin); //< A1 foot sampled values 79 count = heartrate.getCnt(); 80 if(count) 81 { / 82 lcddisplay.drawYLine(count+8,heartrateValue/24,hear trateValueLast/24); ///< Draw a vertical line,Step 24 83 } 84 else 85 { 86 lcddisplay.drawYLine(count+8,heartrateValue/24,hear trateValueLast/24); 87 } 88 89 rateValue = heartrate.getRate(); ///< Get heart rate value 90 if(rateValue) 91 { 92 y); lcddisplay.drawLetter(7,50,3,rateValue,letterDispla ///< Display values 93 Serial.println(rateValue); 94 } 95 delay(20); 96 }   For any questions, advice or cool ideas to share, please visit the DFRobot Forum                                             Powered By DFRobot © 2008-2017