Introduction: DIY Tachometer (RPM Meter)

About: Awesome Electronics Tutorials, Projects and How To´s

In this project I will show you how a 3€ IR distance sensor works and how we can use it to build a proper DIY tachometer that functions properly. Let's get started!

Step 1: Watch the Video!

Make sure to watch the video. It gives you all the information you need to create your own DIY tachometer. But during the next steps I will present you some additional information.

Step 2: Order the Components!

Here you can find a parts list with example seller (affiliate links):

1x Arduino Pro Mini:

1x IR Distance Sensor:

1x 128x64 OLED:

1x TP4056 Charge Protect Board:

1x LiPo Battery:

1x Toggle Switch:

Step 3: Create the Circuit!

Here you can find the schematic with reference pictures of my finished board design. Use them to create your own!

Step 4: Upload the Code!

Here you can find the code for the project. Upload it through an FTDI breakout board. Also make sure to include this library:

Also make sure that you use the following board settings: Arduino Pro Mini 3.3V 8MHz

Step 5: Success!

You did it! You just created a your own DIY Tachometer!

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