2020-09-13

[public] 295K views, 15.2K likes, dislikes audio only

GreatScott!

$2 for 2Layer, 5pcs & $5 for 4Layer, 5pcs: https://jlcpcb.com

Previous video: /youtube/video/05qJM-zZ4ng

uC Timer video: /youtube/video/IdL0_ZJ7V2s

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Twitter: https://twitter.com/GreatScottLab

Support me for more videos: https://www.patreon.com/GreatScott?ty=h

More project information (schematic, code,....) on Instructables: https://www.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 https://jlcpcb.com to get professional PCBs for low prices.

Music:

2011 Lookalike by Bartlebeats

Killing Time, Kevin MacLeod

(incompetech.com)