Tachometer (RPM Meter) || DIY or Buy || How a 3€ sensor outdoes a 29€ product!

$2 for 2Layer, 5pcs & $5 for 4Layer, 5pcs: https://jlcpcb.com
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Parts list (affiliate links):
1x Arduino Pro Mini: https://s.click.aliexpress.com/e/_dTW...
1x IR Distance Sensor: https://s.click.aliexpress.com/e/_dXl...
1x 128x64 OLED: https://s.click.aliexpress.com/e/_dXO...
1x TP4056 Charge Protect Board: https://s.click.aliexpress.com/e/_d69...
1x LiPo Battery: https://s.click.aliexpress.com/e/_dUE...
1x Toggle Switch: https://s.click.aliexpress.com/e/_dZ1...

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)