GreatScott! | Tachometer (RPM Meter) || DIY or Buy || How a 3€ sensor outdoes a 29€ product! @greatscottlab | Uploaded 4 years ago | Updated 2 days ago
$2 for 2Layer, 5pcs & $5 for 4Layer, 5pcs: jlcpcb.com
Previous video: youtu.be/05qJM-zZ4ng
uC Timer video: youtu.be/IdL0_ZJ7V2s
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More project information (schematic, code,....) on Instructables: instructables.com/id/DIY-Tachometer-RPM-Meter

Parts list (affiliate links):
1x Arduino Pro Mini: https://s.click.aliexpress.com/e/_dTWuuYz
1x IR Distance Sensor: https://s.click.aliexpress.com/e/_dXlui7F
1x 128x64 OLED: https://s.click.aliexpress.com/e/_dXOYM8H
1x TP4056 Charge Protect Board: https://s.click.aliexpress.com/e/_d697XPJ
1x LiPo Battery: https://s.click.aliexpress.com/e/_dUE2A0V
1x Toggle Switch: https://s.click.aliexpress.com/e/_dZ19w21

In this episode of DIY or Buy we will be having a closer look at a commercial tachometer (RPM Meter) and test it in order to find out that it is pretty much unusable. Afterwards 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!

Thanks to JLCPCB for sponsoring this video
Visit jlcpcb.com to get professional PCBs for low prices.

Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod
(incompetech.com)