Introduction: How to Make Pulse Rate Monitor Using Arduino
Hello readers in this instructables i will show you how to make pulse rate monitor using arduino.
To begin with let me tell you what is a pulse rate monitor is, it's a device that shows the measure of heartbeat.
That's the defintion of the pulse rate monitor for easier understanding.
Well now let me tell you what is special about this device, usually the pulse meter is expensive and here we are using the pulse rate monitor and arduino to build this gadget.
The LCD screen shows the heartbeat rate in real time.
I have made the 3d printed frame design using Tinkercad application and you can edit my current design and show off your skills too.
Have you taken a few moments to realise how cool this device is?
The heartbeat inside your body is being shown on a device in the form of numbers!
I have made this device body using the 3d printed parts and it is portable and powered by usb power meaning its a plug and use type of device.
In this project tutorial i will explain you everything so that you can build one for yourself too.
Supplies
Gather all these components before you build so you can accelerate the build time
Arduino Uno from here
LCD module 1.8inch TFT LCD
Jumper cables
Arduino IDE
Programming Cable
Arduino Ide
Hot Glue and Super Glue
Man with heart!
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Step 1: Design the Frame
I used Tinkercad application to design this parts and it is very simple part but still if you think you can make a improved version of this you can make that too.
I have given the files that i design from tinkercad and you can simply export it to the cura slicer and slice the model.
There is no need to make any changes to the rafts or the supports since we are not using any of them in this project.
I will start slicing the base part first and i have taken the measurements of the standard arduino board and made the space inside so that for everyone the parts fits.
I will use red pla filament to print this, well the choice of color is left to your color preferences.
Later i will print the lid part and this wont take much time to print, Here i will use white color so that it blends well with the red base.
Tip: Keep the model for printing and in that time you can build the circuit, To see the circuit we will move ahead with further steps.
Step 2: Circuit and Program
There are 2 different components that are connected to Arduino Uno here
First is the TFT LCD screen and the second is the pulse sensor module.
Let me explain the circuit connection one by one, il go with the TFT screen connection first
- VCC to 5V
- GND to GND
- CS to D10
- DC to D9
- RST to D8
- SCK connected to D13
- MOSI to D11
- MISO is left unconnected
- LED/BL to 5V
After you connect following this we can work on the pulse sensor
The pulse sensor comes with 3 pins, the positive, Gnd and the signal pins, I will connect the positive to 3v whereas the gnd to gnd of the arduino uno board
Signal pin of the pulse sensor is connected to A0 pin and we have the connections complete.
Open your arduino ide, paste the below code and then select proper board and port type and click on the upload button.
After the program is done uploading you can simply test the project by placing your finger infront of the pulse sensor and you should see the number on screen.
This circuit is working fine and now we need a frame that holds all the electronics.
Attachments
Step 3: Assembling
After you ensure that the circuit is working fine, assemble the components inside the 3d printed frame.
We have only 2 parts here first is the base that holds the arduino and the jumper cables, you can use double sided adhesive to glue the uno to the base.
After this arrange the jumpers so that when you keep everything inside it doesn't comes out.
Now for the lid part you need to glue the pulse sensor and then the LCD screen make sure to keep them secure to their resepective places.
This lid is then placed over the base frame part, i will few drops of superglue to secure this to the base part.
In case you find it difficult to merge the base and top lid part you can use a small rectangular open frame to elevate the height of the base part.
After the glue dries the project is ready and the only thing left now is to test the project and we will see that now in the next step.
Step 4: How to Use and a Working Video
To use this all you have to do is conect the usb cable to uno and then to the power source, i will be using power bank whereas you can also do same or you can even connect to the 5v adapter.
Allow few seconds for the screen to show up with interface and now you can place your finger infront of the sensor and you will see the readings on the screen.
When you take your fingers off from the sensor in a few seconds the display comes to zero and the device is ready for using again.
You can also change the interface by making changes to the code, Well this was all about this project.
Missing something? ah yes, like after every meal you need a desert similarly after reading the instructable you need to watch this building tutorial.
Here i have covered all the build steps one by one and also a working video you must see.
If you enjoyed reading my instructables show your support by sharing this with your friends whom you think wil consider building this.
Thanks for reading and happy making.
