Hello, I am looking for some help with getting my Arduino Uno to work with my pulse sensor, https://pulsesensor.com/. Within the code, I tried to use pulseSensor.begin(), however, it times out. When I comment out that line, the code works just fine except for the pulse sensor. It is my first time posting so if there is anything wrong I apologize. Below I will include my code that I am working with and a screenshot of the timeout from the serial console. I have used the test code that pulse sensor have and it worked just fine sending the BPM to the serial console. This is the code for reference, Getting (Calculating) BPM: – World Famous Electronics llc.. Thank you in advance for any and all help.
TLDR: pulseSensor.begin() from PulseSensor Playground library times out the wifi shield. When commented out the code works just fine. Attached is the screenshot of the timeout and code.
//***************************************************************************
//********************************Modify This********************************
#define WIFI_SSID "GUEST" // WiFi SSID
#define WIFI_PASS "" // WiFi PASSWORD
#define AIO_USERNAME "NAME" // Adafruit IO Username
#define AIO_KEY "KEY" // ADAFRUIT IO KEY
//***************************************************************************
//***************************************************************************
#define USE_ARDUINO_INTERRUPTS true // Set-up low-level interrupts for most acurate BPM math.
#include <PulseSensorPlayground.h> // Includes the PulseSensorPlayground Library.
#include <SPI.h> // Include SPI Library
#include <dht.h> // Include DHT11 Library
#include "Adafruit_MQTT.h" // Include Adafruit MQTT Library
#include "Adafruit_MQTT_Client.h" // Include Adafruit MQTT Client Library
#include "WiFiEsp.h" // Include ESP8266 Library
#include "SoftwareSerial.h" // Include Software Serial Library
#define DHT11_PIN 2 // Connect DHT11 Data Pin to UNO Pin 2
#define PulseWire 0 // Connect Pulse Sensor Purple Pin to UNO Pin 14
#define AIO_SERVER "io.adafruit.com" // Adafruit Server
#define AIO_SERVERPORT 1883 // Adafruit IO Port
dht DHT; // DHT object creation
SoftwareSerial softserial(4, 5); // Using UNO Software Serial RX, TX
int status = WL_IDLE_STATUS; // ESP Status Initialization
int reqCount = 0; // Request Received Count
WiFiEspClient client; // WiFiEspClient creation
PulseSensorPlayground pulseSensor; // Creates an instance of the PulseSensorPlayground object called "pulseSensor"
Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_KEY); // Connecting to Adafruit IO
Adafruit_MQTT_Publish temperature = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/temperature"); // Temperature feed MQTT path for Adafruit IO
Adafruit_MQTT_Publish humidity = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/humidity"); // Humidity feed MQTT path for Adafruit IO
Adafruit_MQTT_Publish mod_temperature = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/mod_temperature"); // Modified Temperature feed MQTT path for Adafruit IO
Adafruit_MQTT_Publish pulse = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/pulse"); // Pulse feed MQTT path for Adafruit IO
Adafruit_MQTT_Publish mod_pulse = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/mod_pulse"); // Modified Pulse feed MQTT path for Adafruit IO
void MQTT_connect()
{
int8_t ret; // Declaring Variable
if (mqtt.connected()) // Check Connection Status
{
return; // Exit if already connected
}
Serial.print("Connecting to MQTT ... "); // Printing to serial monitor
uint8_t retries = 3; // Declaring Variable
while ((ret = mqtt.connect()) != 0) // Return 0 if connected
{
Serial.println(mqtt.connectErrorString(ret)); // Printing to serial monitor
Serial.println("Reconnect within 5 seconds ..."); // Printing to serial monitor
mqtt.disconnect(); // Disconnect MQTT connection
delay(5000); // Wait 5 seconds
retries--; // Decrease Retry Count
if (retries == 0) // Check Retries
{
while (1); // Stop here if MQTT Connection failed
}
}
Serial.println("MQTT Connected!"); // Printing to serial monitor
}
void setup()
{
Serial.begin(9600); // Setting up Arduino Serial Baud Rate
pulseSensor.analogInput(PulseWire);
//pulseSensor.begin();
pinMode(DHT11_PIN, INPUT); // Seeting up DHT11 as Input
softserial.begin(115200); // Setting up ESP28266 Baud Rate
softserial.write("AT+CIOBAUD=9600\r\n"); // Modifying ESP8266 Baud Rate
softserial.write("AT+RST\r\n"); // Resetting ESP8266
softserial.begin(9600); // Setting up ESP8266 Baud Rate
WiFi.init(&softserial); // Initialize ESP8266 Module
if (WiFi.status() == WL_NO_SHIELD) // Check ESP Sheild Presence
{
Serial.println("WiFi Shield Unavailable!"); // Printing to serial monitor
while (true); // Stop
}
while ( status != WL_CONNECTED) // Checking WiFi Connection Status
{
Serial.print("Connecting to: "); // Printing to serial monitor
Serial.println(WIFI_SSID); // Printing to serial monitor
status = WiFi.begin(WIFI_SSID, WIFI_PASS); // Connecting to WiFi
}
Serial.println("Connected to WiFi!"); // Printing to serial monitor
}
void loop()
{
MQTT_connect(); // Calling MQTT_connect function
int chk = DHT.read11(DHT11_PIN); // Read DHT11
float h = DHT.humidity; // Reading Humidity
float t = DHT.temperature; // Reading Temperature
float mod_t = t + 20; // 20 Added with Measured Temperature
//float p = analogRead(Pulse_PIN); // Reading Pulse Sensor Value
float p = pulseSensor.getBeatsPerMinute(); // Calls function on our pulseSensor object that returns BPM as an "int".
float mod_p = p + 20; // 20 Added with Measured Pulse
Serial.print(F("\nTemperature:")); // Printing to serial monitor
Serial.print(t); // Printing to serial monitor
Serial.print(F("\nModified Temperature:")); // Printing to serial monitor
Serial.print(mod_t); // Printing to serial monitor
Serial.print(F("\nHumidity:")); // Printing to serial monitor
Serial.print(h); // Printing to serial monitor
Serial.print(F("\nPulse:")); // Printing to serial monitor
Serial.print(p); // Printing to serial monitor
Serial.print(F("\nModified Pulse:")); // Printing to serial monitor
Serial.print(mod_p); // Printing to serial monitor
temperature.publish(t); // Publish Temperature to Adafruit IO
mod_temperature.publish(mod_t); // Publish Modified Temperature to Adafruit IO
humidity.publish(h); // Publish Humidity to Adafruit IO
pulse.publish(p); // Publish Pulse to Adafruit IO
mod_pulse.publish(mod_p); // Publish Modified Pulse to Adafruit IO
h = 0; // Clearing variable h
t = 0; // Clearing variable t
mod_t = 0; // Clearing variable mod_t
p = 0; // Clearing variable p
mod_p = 0; // Clearing variable mod_p
delay(60000); // Wait 1 Minute Before Next Publish
}
Timeout error screenshot below.
