興趣使然，啊不就這樣，也就這樣！

有鑑於自己有時候會玩一些arduino相關的東西,所以打算也來記錄一下,順便跟大家一起分享

有問題可以一起留言若是討論喔!!

來分享一下一個比較跟醫療相關的模組,心跳測量的模組 售價不貴百元出頭就有了

這是模組的本體尺寸不大

在白色熱縮套裡面是測試的原件(放在內部是避免光線干擾,增加準確性)

在範例程式裡面我們只要使用到+ - 跟A0腳位就可以了

我們就將線接到arduino上吧(分別接到+ - A0)

之後打開arduino 的電腦端軟體,並且開啟範例程式

之後便是上傳到板子,然後我們開啟序列監控視窗

剛放上去是不準的幾秒後數值就很穩定的到了70左右

或許取多次做平均再來顯示一個心跳執會更好!!

感覺可以拿來配合nano做成一個簡易式良心跳的設備嘿嘿~

這邊附上範例的code給各位測試

// Pins const int ledPin = 13; const int sensePin = 0; // LED blink variables int ledState = LOW; long ledOnMillis = 0; long ledOnInterval = 50; // Hearbeat detect variables int newHeartReading = 0; int lastHeartReading = 0; int Delta = 0; int recentReadings[8] = {0,0,0,0,0,0,0,0}; int historySize = 8; int recentTotal = 0; int readingsIndex = 0; boolean highChange = false; int totalThreshold = 2; int Heartrate[16] ={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; int Heartratebuf=16; int aveHeartrate=0; int i=0,indh=0; // Heartbeat Timing long lastHeartbeatTime = 0; long debounceDelay = 150; int currentHeartrate = 0; void setup() { // initialize the serial communication: Serial.begin(9600); // initialize the digital pin as an output: pinMode(ledPin, OUTPUT); } void loop() { // Turn off LED digitalWrite(ledPin, LOW); // Read analogue pin. newHeartReading = analogRead(sensePin); //Serial.println(newHeartReading); //Calculate Delta Delta = newHeartReading - lastHeartReading; lastHeartReading = newHeartReading; // Find new recent total recentTotal = recentTotal - recentReadings[readingsIndex] + Delta; // replace indexed recent value recentReadings[readingsIndex] = Delta; // increment index readingsIndex = (readingsIndex + 1) % historySize; //Debug //Serial.println(recentTotal); // Decide whether to start an LED Blink. if (recentTotal >= totalThreshold) { // Possible heartbeart, check time if (millis() - lastHeartbeatTime >= debounceDelay) { // Heartbeat digitalWrite(ledPin, HIGH); currentHeartrate = 60000 / (millis() - lastHeartbeatTime); Heartrate[indh++]=currentHeartrate; for(i=0;i<Heartratebuf;i++) { aveHeartrate += Heartrate[i]; } aveHeartrate =aveHeartrate/Heartratebuf; if(indh==Heartratebuf) indh=0; lastHeartbeatTime = millis(); // Print Results //Serial.println("Beat"); //Serial.print("AVER:"); //Serial.println(aveHeartrate); if (currentHeartrate <= aveHeartrate && currentHeartrate<= 200) { Serial.print("Beat:"); Serial.println(currentHeartrate); } aveHeartrate=0; } } delay(10); }

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