Circuit Documentation
Summary of the Circuit
This circuit integrates an ESP8266 NodeMCU microcontroller with a Heart Pulse Sensor and a Temperature Sensor (LM35). The ESP8266 NodeMCU is responsible for reading the data from both sensors. The Heart Pulse Sensor detects the heartbeat signal and sends it to the microcontroller through a digital input. The Temperature Sensor (LM35) measures the ambient temperature and provides an analog output to the microcontroller for temperature readings.
Component List
ESP8266 NodeMCU
- Description: A Wi-Fi enabled microcontroller module with a full TCP/IP stack.
- Pins: D0, D1, D2, D3, D4, 3V3, GND, D5, D6, D7, D8, RX, TX, A0, RSV, SD3, SD2, SD1, CMD, SD0, CLK, EN, RST, VIN
Heart Pulse Sensor
- Description: A sensor that measures the heartbeat rate.
- Pins: GND, VCC, SIGNAL
Temperature Sensor (LM35)
- Description: An analog temperature sensor that measures temperature and provides a linearly proportional voltage output.
- Pins: +Vs, Vout, GND
Wiring Details
ESP8266 NodeMCU
- D0: Connected to the SIGNAL pin of the Heart Pulse Sensor.
- 3V3: Provides power to the +Vs pin of the Temperature Sensor (LM35).
- GND: Common ground shared with the Heart Pulse Sensor and the Temperature Sensor (LM35).
- A0: Reads the analog voltage output (Vout) from the Temperature Sensor (LM35).
- VIN: Provides power to the VCC pin of the Heart Pulse Sensor.
Heart Pulse Sensor
- SIGNAL: Sends the heartbeat signal to the D0 pin of the ESP8266 NodeMCU.
- GND: Connected to the GND pin of the ESP8266 NodeMCU.
- VCC: Receives power from the VIN pin of the ESP8266 NodeMCU.
Temperature Sensor (LM35)
- +Vs: Powered by the 3V3 pin of the ESP8266 NodeMCU.
- Vout: Outputs an analog voltage to the A0 pin of the ESP8266 NodeMCU.
- GND: Connected to the GND pin of the ESP8266 NodeMCU.
Documented Code
No code has been provided for the microcontroller. To fully utilize the circuit, embedded code should be written and uploaded to the ESP8266 NodeMCU to read the sensor data, process it, and perform any required actions such as displaying the data, sending it over the network, or triggering alerts based on the sensor readings.