Croduino: shaft rotation detector with relay output

TECHNICAL SUPPORT NULA Development Boards
1

Customer:

I need a sensor recommendation for monitoring shaft rotation. The sensor would mount mechanically at the end of a shaft that rotates slowly, approximately 20 RPM. I need a relay output to signal whether the shaft is rotating or not. I want to build a control unit where a green indicator lights up for a shaft that is rotating, and a red indicator lights up when the shaft stops.

Original message (Croatian)

Trebam prijedlog (za gotovo rjesenje) jednog senzora…

Radi se o senzoru za kontrolu vrtnje - mehanicki ide na kraj vratila.

Vratilo se polako okrece (cca 20 okretaja u minuti)

Treba mi relejni izlaz koji ce mi signalizirati dali se neka osovina okreće ili ne.

Pa bi napravio kontrolnu jedinicu na kojoj za određenu osovinu svijetli zelena lampica ,a ukoliko je osovina stala svijetli crvena.

Zahvaljujem.

[name removed]

Originally submitted via email support on 31 January 2018. Migrated to the forum for community visibility.

2

Soldered Support:

This can be accomplished using a magnet and a magnetic field sensor (Hall effect sensor). Mount the magnet on the shaft, and each time the shaft completes one full rotation, the sensor will detect the magnet. You can then connect this to a Croduino and implement whatever logic you need with it.

Original message (Croatian)

može se odraditi s magnetom i senzorom magnetskog polja(hall effect sensor). Učvrstite magnet na vratilo, svaki puta kada napravi puni okret, senzor će detektirati magnet. Sve to onda možete spojiti onda na Croduino i dalje radit i s time što god trebate.