Heart Rate Measurement Circuit
0:44
Below is an outline of the components and nets you could include in your schematic. We can add the following components to build the circuit:
Table
| Component | Designator | Description | Link |
|---|---|---|---|
| Arduino Uno | U1 | Acts as the microcontroller for reading sensor data and controlling the LCD. | Arduino Uno |
| Piezoelectric Sensor | PZ1 | Senses the mechanical pressure changes related to the heart rate. | Piezo Sensor |
| 16x2 LCD Display | D1 | Displays the averaged pressure reading from the sensor. | 16x2 LCD |
| Ground | GND | Common ground reference for the circuit. | GND |
For the schematic interconnections, consider these steps:
- Connect the output of PZ1 (Piezoelectric Sensor) to an analog input pin (e.g. A0) on U1 (Arduino Uno).
- Connect the ground of PZ1 to GND.
- Power D1 (16x2 LCD) from the 5V and GND outputs of U1. Also, wire the data pins on D1 to the appropriate digital output pins on U1 for communication.
- Ensure all components share a common GND connection.
This setup will allow the Arduino to sample the sensor's analog signal, process the reading (for example, by averaging multiple samples to obtain an average pressure value), and update the display on the LCD.
What would you like to do next? Would you like to move on to wiring the schematic nets?
406 days
0:42
Below is a summary of the recommended wiring for the schematic nets:
- Analog Signal Path: Connect the output of Piezo Sensor (PZ1) to an analog input (e.g. A0) on Arduino Uno.
- Power Supply: Ensure Arduino Uno provides 5V to the 16x2 LCD along with connection to common ground.
- Common Ground: Connect the ground pins of Piezo Sensor, Arduino Uno, and 16x2 LCD using a GND net.
To wire these connections in Flux:
- Click on a component’s pin (for instance, A0 on Arduino Uno).
- Drag from that pin to the corresponding pin on the Piezo Sensor.
- Repeat for the power and ground connections ensuring all components share the same GND net.
For more detailed instructions on wiring schematic nets, please refer to the Flux Documentation on wiring schematic nets.
What would you like to do next?
Design Connections
Start PCB Layout
Test Circuit Design
406 days
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